The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2006 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.database.sqlite; |
| 18 | |
Vasu Nori | 5a03f36 | 2009-10-20 15:16:35 -0700 | [diff] [blame] | 19 | import com.google.android.collect.Maps; |
| 20 | |
Dan Egnor | 1231195 | 2009-11-23 14:47:45 -0800 | [diff] [blame] | 21 | import android.app.ActivityThread; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 22 | import android.content.ContentValues; |
| 23 | import android.database.Cursor; |
| 24 | import android.database.DatabaseUtils; |
| 25 | import android.database.SQLException; |
Vasu Nori | c384920 | 2010-03-09 10:47:25 -0800 | [diff] [blame] | 26 | import android.database.sqlite.SQLiteDebug.DbStats; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 27 | import android.os.Debug; |
| 28 | import android.os.SystemClock; |
Dmitri Plotnikov | 90142c9 | 2009-09-15 10:52:17 -0700 | [diff] [blame] | 29 | import android.os.SystemProperties; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 30 | import android.text.TextUtils; |
| 31 | import android.util.Config; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 32 | import android.util.EventLog; |
Dmitri Plotnikov | 90142c9 | 2009-09-15 10:52:17 -0700 | [diff] [blame] | 33 | import android.util.Log; |
Vasu Nori | c384920 | 2010-03-09 10:47:25 -0800 | [diff] [blame] | 34 | import android.util.Pair; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 35 | |
| 36 | import java.io.File; |
Vasu Nori | c384920 | 2010-03-09 10:47:25 -0800 | [diff] [blame] | 37 | import java.lang.ref.WeakReference; |
Vasu Nori | 5a03f36 | 2009-10-20 15:16:35 -0700 | [diff] [blame] | 38 | import java.text.SimpleDateFormat; |
Vasu Nori | c384920 | 2010-03-09 10:47:25 -0800 | [diff] [blame] | 39 | import java.util.ArrayList; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 40 | import java.util.HashMap; |
Vasu Nori | c384920 | 2010-03-09 10:47:25 -0800 | [diff] [blame] | 41 | import java.util.HashSet; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 42 | import java.util.Iterator; |
| 43 | import java.util.Locale; |
| 44 | import java.util.Map; |
Dan Egnor | 1231195 | 2009-11-23 14:47:45 -0800 | [diff] [blame] | 45 | import java.util.Random; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 46 | import java.util.Set; |
| 47 | import java.util.WeakHashMap; |
| 48 | import java.util.concurrent.locks.ReentrantLock; |
Brad Fitzpatrick | d833023 | 2010-02-19 10:59:01 -0800 | [diff] [blame] | 49 | import java.util.regex.Pattern; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 50 | |
| 51 | /** |
| 52 | * Exposes methods to manage a SQLite database. |
| 53 | * <p>SQLiteDatabase has methods to create, delete, execute SQL commands, and |
| 54 | * perform other common database management tasks. |
| 55 | * <p>See the Notepad sample application in the SDK for an example of creating |
| 56 | * and managing a database. |
| 57 | * <p> Database names must be unique within an application, not across all |
| 58 | * applications. |
| 59 | * |
| 60 | * <h3>Localized Collation - ORDER BY</h3> |
| 61 | * <p>In addition to SQLite's default <code>BINARY</code> collator, Android supplies |
| 62 | * two more, <code>LOCALIZED</code>, which changes with the system's current locale |
| 63 | * if you wire it up correctly (XXX a link needed!), and <code>UNICODE</code>, which |
| 64 | * is the Unicode Collation Algorithm and not tailored to the current locale. |
| 65 | */ |
| 66 | public class SQLiteDatabase extends SQLiteClosable { |
| 67 | private static final String TAG = "Database"; |
Jeff Hamilton | 082c2af | 2009-09-29 11:49:51 -0700 | [diff] [blame] | 68 | private static final int EVENT_DB_OPERATION = 52000; |
| 69 | private static final int EVENT_DB_CORRUPT = 75004; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 70 | |
| 71 | /** |
| 72 | * Algorithms used in ON CONFLICT clause |
| 73 | * http://www.sqlite.org/lang_conflict.html |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 74 | */ |
Vasu Nori | 8d45e4e | 2010-02-05 22:35:47 -0800 | [diff] [blame] | 75 | /** |
| 76 | * When a constraint violation occurs, an immediate ROLLBACK occurs, |
| 77 | * thus ending the current transaction, and the command aborts with a |
| 78 | * return code of SQLITE_CONSTRAINT. If no transaction is active |
| 79 | * (other than the implied transaction that is created on every command) |
| 80 | * then this algorithm works the same as ABORT. |
| 81 | */ |
| 82 | public static final int CONFLICT_ROLLBACK = 1; |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 83 | |
Vasu Nori | 8d45e4e | 2010-02-05 22:35:47 -0800 | [diff] [blame] | 84 | /** |
| 85 | * When a constraint violation occurs,no ROLLBACK is executed |
| 86 | * so changes from prior commands within the same transaction |
| 87 | * are preserved. This is the default behavior. |
| 88 | */ |
| 89 | public static final int CONFLICT_ABORT = 2; |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 90 | |
Vasu Nori | 8d45e4e | 2010-02-05 22:35:47 -0800 | [diff] [blame] | 91 | /** |
| 92 | * When a constraint violation occurs, the command aborts with a return |
| 93 | * code SQLITE_CONSTRAINT. But any changes to the database that |
| 94 | * the command made prior to encountering the constraint violation |
| 95 | * are preserved and are not backed out. |
| 96 | */ |
| 97 | public static final int CONFLICT_FAIL = 3; |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 98 | |
Vasu Nori | 8d45e4e | 2010-02-05 22:35:47 -0800 | [diff] [blame] | 99 | /** |
| 100 | * When a constraint violation occurs, the one row that contains |
| 101 | * the constraint violation is not inserted or changed. |
| 102 | * But the command continues executing normally. Other rows before and |
| 103 | * after the row that contained the constraint violation continue to be |
| 104 | * inserted or updated normally. No error is returned. |
| 105 | */ |
| 106 | public static final int CONFLICT_IGNORE = 4; |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 107 | |
Vasu Nori | 8d45e4e | 2010-02-05 22:35:47 -0800 | [diff] [blame] | 108 | /** |
| 109 | * When a UNIQUE constraint violation occurs, the pre-existing rows that |
| 110 | * are causing the constraint violation are removed prior to inserting |
| 111 | * or updating the current row. Thus the insert or update always occurs. |
| 112 | * The command continues executing normally. No error is returned. |
| 113 | * If a NOT NULL constraint violation occurs, the NULL value is replaced |
| 114 | * by the default value for that column. If the column has no default |
| 115 | * value, then the ABORT algorithm is used. If a CHECK constraint |
| 116 | * violation occurs then the IGNORE algorithm is used. When this conflict |
| 117 | * resolution strategy deletes rows in order to satisfy a constraint, |
| 118 | * it does not invoke delete triggers on those rows. |
| 119 | * This behavior might change in a future release. |
| 120 | */ |
| 121 | public static final int CONFLICT_REPLACE = 5; |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 122 | |
Vasu Nori | 8d45e4e | 2010-02-05 22:35:47 -0800 | [diff] [blame] | 123 | /** |
| 124 | * use the following when no conflict action is specified. |
| 125 | */ |
| 126 | public static final int CONFLICT_NONE = 0; |
| 127 | private static final String[] CONFLICT_VALUES = new String[] |
| 128 | {"", " OR ROLLBACK ", " OR ABORT ", " OR FAIL ", " OR IGNORE ", " OR REPLACE "}; |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 129 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 130 | /** |
| 131 | * Maximum Length Of A LIKE Or GLOB Pattern |
| 132 | * The pattern matching algorithm used in the default LIKE and GLOB implementation |
| 133 | * of SQLite can exhibit O(N^2) performance (where N is the number of characters in |
| 134 | * the pattern) for certain pathological cases. To avoid denial-of-service attacks |
| 135 | * the length of the LIKE or GLOB pattern is limited to SQLITE_MAX_LIKE_PATTERN_LENGTH bytes. |
| 136 | * The default value of this limit is 50000. A modern workstation can evaluate |
| 137 | * even a pathological LIKE or GLOB pattern of 50000 bytes relatively quickly. |
| 138 | * The denial of service problem only comes into play when the pattern length gets |
| 139 | * into millions of bytes. Nevertheless, since most useful LIKE or GLOB patterns |
| 140 | * are at most a few dozen bytes in length, paranoid application developers may |
| 141 | * want to reduce this parameter to something in the range of a few hundred |
| 142 | * if they know that external users are able to generate arbitrary patterns. |
| 143 | */ |
| 144 | public static final int SQLITE_MAX_LIKE_PATTERN_LENGTH = 50000; |
| 145 | |
| 146 | /** |
| 147 | * Flag for {@link #openDatabase} to open the database for reading and writing. |
| 148 | * If the disk is full, this may fail even before you actually write anything. |
| 149 | * |
| 150 | * {@more} Note that the value of this flag is 0, so it is the default. |
| 151 | */ |
| 152 | public static final int OPEN_READWRITE = 0x00000000; // update native code if changing |
| 153 | |
| 154 | /** |
| 155 | * Flag for {@link #openDatabase} to open the database for reading only. |
| 156 | * This is the only reliable way to open a database if the disk may be full. |
| 157 | */ |
| 158 | public static final int OPEN_READONLY = 0x00000001; // update native code if changing |
| 159 | |
| 160 | private static final int OPEN_READ_MASK = 0x00000001; // update native code if changing |
| 161 | |
| 162 | /** |
| 163 | * Flag for {@link #openDatabase} to open the database without support for localized collators. |
| 164 | * |
| 165 | * {@more} This causes the collator <code>LOCALIZED</code> not to be created. |
| 166 | * You must be consistent when using this flag to use the setting the database was |
| 167 | * created with. If this is set, {@link #setLocale} will do nothing. |
| 168 | */ |
| 169 | public static final int NO_LOCALIZED_COLLATORS = 0x00000010; // update native code if changing |
| 170 | |
| 171 | /** |
| 172 | * Flag for {@link #openDatabase} to create the database file if it does not already exist. |
| 173 | */ |
| 174 | public static final int CREATE_IF_NECESSARY = 0x10000000; // update native code if changing |
| 175 | |
| 176 | /** |
| 177 | * Indicates whether the most-recently started transaction has been marked as successful. |
| 178 | */ |
| 179 | private boolean mInnerTransactionIsSuccessful; |
| 180 | |
| 181 | /** |
| 182 | * Valid during the life of a transaction, and indicates whether the entire transaction (the |
| 183 | * outer one and all of the inner ones) so far has been successful. |
| 184 | */ |
| 185 | private boolean mTransactionIsSuccessful; |
| 186 | |
Fred Quintana | c4516a7 | 2009-09-03 12:14:06 -0700 | [diff] [blame] | 187 | /** |
| 188 | * Valid during the life of a transaction. |
| 189 | */ |
| 190 | private SQLiteTransactionListener mTransactionListener; |
| 191 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 192 | /** Synchronize on this when accessing the database */ |
| 193 | private final ReentrantLock mLock = new ReentrantLock(true); |
| 194 | |
| 195 | private long mLockAcquiredWallTime = 0L; |
| 196 | private long mLockAcquiredThreadTime = 0L; |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 197 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 198 | // limit the frequency of complaints about each database to one within 20 sec |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 199 | // unless run command adb shell setprop log.tag.Database VERBOSE |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 200 | private static final int LOCK_WARNING_WINDOW_IN_MS = 20000; |
| 201 | /** If the lock is held this long then a warning will be printed when it is released. */ |
| 202 | private static final int LOCK_ACQUIRED_WARNING_TIME_IN_MS = 300; |
| 203 | private static final int LOCK_ACQUIRED_WARNING_THREAD_TIME_IN_MS = 100; |
| 204 | private static final int LOCK_ACQUIRED_WARNING_TIME_IN_MS_ALWAYS_PRINT = 2000; |
| 205 | |
Dmitri Plotnikov | b43b58d | 2009-09-09 18:10:42 -0700 | [diff] [blame] | 206 | private static final int SLEEP_AFTER_YIELD_QUANTUM = 1000; |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 207 | |
Brad Fitzpatrick | d833023 | 2010-02-19 10:59:01 -0800 | [diff] [blame] | 208 | // The pattern we remove from database filenames before |
| 209 | // potentially logging them. |
| 210 | private static final Pattern EMAIL_IN_DB_PATTERN = Pattern.compile("[\\w\\.\\-]+@[\\w\\.\\-]+"); |
| 211 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 212 | private long mLastLockMessageTime = 0L; |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 213 | |
Brad Fitzpatrick | b28c797 | 2010-02-12 12:49:41 -0800 | [diff] [blame] | 214 | // Things related to query logging/sampling for debugging |
| 215 | // slow/frequent queries during development. Always log queries |
Brad Fitzpatrick | 2588096 | 2010-02-22 15:17:49 -0800 | [diff] [blame] | 216 | // which take 500ms+; shorter queries are sampled accordingly. |
Brad Fitzpatrick | b28c797 | 2010-02-12 12:49:41 -0800 | [diff] [blame] | 217 | // Commit statements, which are typically slow, are logged |
| 218 | // together with the most recently executed SQL statement, for |
| 219 | // disambiguation. |
Brad Fitzpatrick | 2588096 | 2010-02-22 15:17:49 -0800 | [diff] [blame] | 220 | private static final int QUERY_LOG_TIME_IN_MILLIS = 500; |
Dan Egnor | 1231195 | 2009-11-23 14:47:45 -0800 | [diff] [blame] | 221 | private static final int QUERY_LOG_SQL_LENGTH = 64; |
Brad Fitzpatrick | b28c797 | 2010-02-12 12:49:41 -0800 | [diff] [blame] | 222 | private static final String COMMIT_SQL = "COMMIT;"; |
Dan Egnor | 1231195 | 2009-11-23 14:47:45 -0800 | [diff] [blame] | 223 | private final Random mRandom = new Random(); |
Brad Fitzpatrick | b28c797 | 2010-02-12 12:49:41 -0800 | [diff] [blame] | 224 | private String mLastSqlStatement = null; |
Dan Egnor | 1231195 | 2009-11-23 14:47:45 -0800 | [diff] [blame] | 225 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 226 | /** Used by native code, do not rename */ |
| 227 | /* package */ int mNativeHandle = 0; |
| 228 | |
| 229 | /** Used to make temp table names unique */ |
| 230 | /* package */ int mTempTableSequence = 0; |
| 231 | |
| 232 | /** The path for the database file */ |
| 233 | private String mPath; |
| 234 | |
Brad Fitzpatrick | d833023 | 2010-02-19 10:59:01 -0800 | [diff] [blame] | 235 | /** The anonymized path for the database file for logging purposes */ |
| 236 | private String mPathForLogs = null; // lazily populated |
| 237 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 238 | /** The flags passed to open/create */ |
| 239 | private int mFlags; |
| 240 | |
| 241 | /** The optional factory to use when creating new Cursors */ |
| 242 | private CursorFactory mFactory; |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 243 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 244 | private WeakHashMap<SQLiteClosable, Object> mPrograms; |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 245 | |
Vasu Nori | 5a03f36 | 2009-10-20 15:16:35 -0700 | [diff] [blame] | 246 | /** |
| 247 | * for each instance of this class, a cache is maintained to store |
| 248 | * the compiled query statement ids returned by sqlite database. |
| 249 | * key = sql statement with "?" for bind args |
| 250 | * value = {@link SQLiteCompiledSql} |
| 251 | * If an application opens the database and keeps it open during its entire life, then |
| 252 | * there will not be an overhead of compilation of sql statements by sqlite. |
| 253 | * |
| 254 | * why is this cache NOT static? because sqlite attaches compiledsql statements to the |
| 255 | * struct created when {@link SQLiteDatabase#openDatabase(String, CursorFactory, int)} is |
| 256 | * invoked. |
| 257 | * |
| 258 | * this cache has an upper limit of mMaxSqlCacheSize (settable by calling the method |
| 259 | * (@link setMaxCacheSize(int)}). its default is 0 - i.e., no caching by default because |
| 260 | * most of the apps don't use "?" syntax in their sql, caching is not useful for them. |
| 261 | */ |
Vasu Nori | e495d1f | 2010-01-06 16:34:19 -0800 | [diff] [blame] | 262 | /* package */ Map<String, SQLiteCompiledSql> mCompiledQueries = Maps.newHashMap(); |
| 263 | /** |
| 264 | * @hide |
| 265 | */ |
| 266 | public static final int MAX_SQL_CACHE_SIZE = 250; |
| 267 | private int mMaxSqlCacheSize = MAX_SQL_CACHE_SIZE; // max cache size per Database instance |
Vasu Nori | e9d9210 | 2010-01-20 15:07:26 -0800 | [diff] [blame] | 268 | private int mCacheFullWarnings; |
Vasu Nori | 49d02ac | 2010-03-05 21:49:30 -0800 | [diff] [blame] | 269 | private static final int MAX_WARNINGS_ON_CACHESIZE_CONDITION = 1; |
Vasu Nori | 5a03f36 | 2009-10-20 15:16:35 -0700 | [diff] [blame] | 270 | |
| 271 | /** maintain stats about number of cache hits and misses */ |
| 272 | private int mNumCacheHits; |
| 273 | private int mNumCacheMisses; |
| 274 | |
| 275 | /** the following 2 members maintain the time when a database is opened and closed */ |
| 276 | private String mTimeOpened = null; |
| 277 | private String mTimeClosed = null; |
| 278 | |
Vasu Nori | d606b4b | 2010-02-24 12:54:20 -0800 | [diff] [blame] | 279 | /** Used to find out where this object was created in case it never got closed. */ |
| 280 | private Throwable mStackTrace = null; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 281 | |
Dmitri Plotnikov | 90142c9 | 2009-09-15 10:52:17 -0700 | [diff] [blame] | 282 | // System property that enables logging of slow queries. Specify the threshold in ms. |
| 283 | private static final String LOG_SLOW_QUERIES_PROPERTY = "db.log.slow_query_threshold"; |
| 284 | private final int mSlowQueryThreshold; |
| 285 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 286 | /** |
| 287 | * @param closable |
| 288 | */ |
| 289 | void addSQLiteClosable(SQLiteClosable closable) { |
| 290 | lock(); |
| 291 | try { |
| 292 | mPrograms.put(closable, null); |
| 293 | } finally { |
| 294 | unlock(); |
| 295 | } |
| 296 | } |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 297 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 298 | void removeSQLiteClosable(SQLiteClosable closable) { |
| 299 | lock(); |
| 300 | try { |
| 301 | mPrograms.remove(closable); |
| 302 | } finally { |
| 303 | unlock(); |
| 304 | } |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 305 | } |
| 306 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 307 | @Override |
| 308 | protected void onAllReferencesReleased() { |
| 309 | if (isOpen()) { |
Vasu Nori | 5a03f36 | 2009-10-20 15:16:35 -0700 | [diff] [blame] | 310 | if (SQLiteDebug.DEBUG_SQL_CACHE) { |
| 311 | mTimeClosed = getTime(); |
| 312 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 313 | dbclose(); |
| 314 | } |
| 315 | } |
| 316 | |
| 317 | /** |
| 318 | * Attempts to release memory that SQLite holds but does not require to |
| 319 | * operate properly. Typically this memory will come from the page cache. |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 320 | * |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 321 | * @return the number of bytes actually released |
| 322 | */ |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 323 | static public native int releaseMemory(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 324 | |
| 325 | /** |
| 326 | * Control whether or not the SQLiteDatabase is made thread-safe by using locks |
| 327 | * around critical sections. This is pretty expensive, so if you know that your |
| 328 | * DB will only be used by a single thread then you should set this to false. |
| 329 | * The default is true. |
| 330 | * @param lockingEnabled set to true to enable locks, false otherwise |
| 331 | */ |
| 332 | public void setLockingEnabled(boolean lockingEnabled) { |
| 333 | mLockingEnabled = lockingEnabled; |
| 334 | } |
| 335 | |
| 336 | /** |
| 337 | * If set then the SQLiteDatabase is made thread-safe by using locks |
| 338 | * around critical sections |
| 339 | */ |
| 340 | private boolean mLockingEnabled = true; |
| 341 | |
| 342 | /* package */ void onCorruption() { |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 343 | Log.e(TAG, "Removing corrupt database: " + mPath); |
| 344 | EventLog.writeEvent(EVENT_DB_CORRUPT, mPath); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 345 | try { |
| 346 | // Close the database (if we can), which will cause subsequent operations to fail. |
| 347 | close(); |
| 348 | } finally { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 349 | // Delete the corrupt file. Don't re-create it now -- that would just confuse people |
| 350 | // -- but the next time someone tries to open it, they can set it up from scratch. |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 351 | if (!mPath.equalsIgnoreCase(":memory")) { |
| 352 | // delete is only for non-memory database files |
| 353 | new File(mPath).delete(); |
| 354 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 355 | } |
| 356 | } |
| 357 | |
| 358 | /** |
| 359 | * Locks the database for exclusive access. The database lock must be held when |
| 360 | * touch the native sqlite3* object since it is single threaded and uses |
| 361 | * a polling lock contention algorithm. The lock is recursive, and may be acquired |
| 362 | * multiple times by the same thread. This is a no-op if mLockingEnabled is false. |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 363 | * |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 364 | * @see #unlock() |
| 365 | */ |
| 366 | /* package */ void lock() { |
| 367 | if (!mLockingEnabled) return; |
| 368 | mLock.lock(); |
| 369 | if (SQLiteDebug.DEBUG_LOCK_TIME_TRACKING) { |
| 370 | if (mLock.getHoldCount() == 1) { |
| 371 | // Use elapsed real-time since the CPU may sleep when waiting for IO |
| 372 | mLockAcquiredWallTime = SystemClock.elapsedRealtime(); |
| 373 | mLockAcquiredThreadTime = Debug.threadCpuTimeNanos(); |
| 374 | } |
| 375 | } |
| 376 | } |
| 377 | |
| 378 | /** |
| 379 | * Locks the database for exclusive access. The database lock must be held when |
| 380 | * touch the native sqlite3* object since it is single threaded and uses |
| 381 | * a polling lock contention algorithm. The lock is recursive, and may be acquired |
| 382 | * multiple times by the same thread. |
| 383 | * |
| 384 | * @see #unlockForced() |
| 385 | */ |
| 386 | private void lockForced() { |
| 387 | mLock.lock(); |
| 388 | if (SQLiteDebug.DEBUG_LOCK_TIME_TRACKING) { |
| 389 | if (mLock.getHoldCount() == 1) { |
| 390 | // Use elapsed real-time since the CPU may sleep when waiting for IO |
| 391 | mLockAcquiredWallTime = SystemClock.elapsedRealtime(); |
| 392 | mLockAcquiredThreadTime = Debug.threadCpuTimeNanos(); |
| 393 | } |
| 394 | } |
| 395 | } |
| 396 | |
| 397 | /** |
| 398 | * Releases the database lock. This is a no-op if mLockingEnabled is false. |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 399 | * |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 400 | * @see #unlock() |
| 401 | */ |
| 402 | /* package */ void unlock() { |
| 403 | if (!mLockingEnabled) return; |
| 404 | if (SQLiteDebug.DEBUG_LOCK_TIME_TRACKING) { |
| 405 | if (mLock.getHoldCount() == 1) { |
| 406 | checkLockHoldTime(); |
| 407 | } |
| 408 | } |
| 409 | mLock.unlock(); |
| 410 | } |
| 411 | |
| 412 | /** |
| 413 | * Releases the database lock. |
| 414 | * |
| 415 | * @see #unlockForced() |
| 416 | */ |
| 417 | private void unlockForced() { |
| 418 | if (SQLiteDebug.DEBUG_LOCK_TIME_TRACKING) { |
| 419 | if (mLock.getHoldCount() == 1) { |
| 420 | checkLockHoldTime(); |
| 421 | } |
| 422 | } |
| 423 | mLock.unlock(); |
| 424 | } |
| 425 | |
| 426 | private void checkLockHoldTime() { |
| 427 | // Use elapsed real-time since the CPU may sleep when waiting for IO |
| 428 | long elapsedTime = SystemClock.elapsedRealtime(); |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 429 | long lockedTime = elapsedTime - mLockAcquiredWallTime; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 430 | if (lockedTime < LOCK_ACQUIRED_WARNING_TIME_IN_MS_ALWAYS_PRINT && |
| 431 | !Log.isLoggable(TAG, Log.VERBOSE) && |
| 432 | (elapsedTime - mLastLockMessageTime) < LOCK_WARNING_WINDOW_IN_MS) { |
| 433 | return; |
| 434 | } |
| 435 | if (lockedTime > LOCK_ACQUIRED_WARNING_TIME_IN_MS) { |
| 436 | int threadTime = (int) |
| 437 | ((Debug.threadCpuTimeNanos() - mLockAcquiredThreadTime) / 1000000); |
| 438 | if (threadTime > LOCK_ACQUIRED_WARNING_THREAD_TIME_IN_MS || |
| 439 | lockedTime > LOCK_ACQUIRED_WARNING_TIME_IN_MS_ALWAYS_PRINT) { |
| 440 | mLastLockMessageTime = elapsedTime; |
| 441 | String msg = "lock held on " + mPath + " for " + lockedTime + "ms. Thread time was " |
| 442 | + threadTime + "ms"; |
| 443 | if (SQLiteDebug.DEBUG_LOCK_TIME_TRACKING_STACK_TRACE) { |
| 444 | Log.d(TAG, msg, new Exception()); |
| 445 | } else { |
| 446 | Log.d(TAG, msg); |
| 447 | } |
| 448 | } |
| 449 | } |
| 450 | } |
| 451 | |
| 452 | /** |
| 453 | * Begins a transaction. Transactions can be nested. When the outer transaction is ended all of |
| 454 | * the work done in that transaction and all of the nested transactions will be committed or |
| 455 | * rolled back. The changes will be rolled back if any transaction is ended without being |
| 456 | * marked as clean (by calling setTransactionSuccessful). Otherwise they will be committed. |
| 457 | * |
| 458 | * <p>Here is the standard idiom for transactions: |
| 459 | * |
| 460 | * <pre> |
| 461 | * db.beginTransaction(); |
| 462 | * try { |
| 463 | * ... |
| 464 | * db.setTransactionSuccessful(); |
| 465 | * } finally { |
| 466 | * db.endTransaction(); |
| 467 | * } |
| 468 | * </pre> |
| 469 | */ |
| 470 | public void beginTransaction() { |
Fred Quintana | c4516a7 | 2009-09-03 12:14:06 -0700 | [diff] [blame] | 471 | beginTransactionWithListener(null /* transactionStatusCallback */); |
| 472 | } |
| 473 | |
| 474 | /** |
| 475 | * Begins a transaction. Transactions can be nested. When the outer transaction is ended all of |
| 476 | * the work done in that transaction and all of the nested transactions will be committed or |
| 477 | * rolled back. The changes will be rolled back if any transaction is ended without being |
| 478 | * marked as clean (by calling setTransactionSuccessful). Otherwise they will be committed. |
| 479 | * |
| 480 | * <p>Here is the standard idiom for transactions: |
| 481 | * |
| 482 | * <pre> |
| 483 | * db.beginTransactionWithListener(listener); |
| 484 | * try { |
| 485 | * ... |
| 486 | * db.setTransactionSuccessful(); |
| 487 | * } finally { |
| 488 | * db.endTransaction(); |
| 489 | * } |
| 490 | * </pre> |
| 491 | * @param transactionListener listener that should be notified when the transaction begins, |
| 492 | * commits, or is rolled back, either explicitly or by a call to |
| 493 | * {@link #yieldIfContendedSafely}. |
| 494 | */ |
| 495 | public void beginTransactionWithListener(SQLiteTransactionListener transactionListener) { |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 496 | if (!isOpen()) { |
| 497 | throw new IllegalStateException("database not open"); |
| 498 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 499 | lockForced(); |
| 500 | boolean ok = false; |
| 501 | try { |
| 502 | // If this thread already had the lock then get out |
| 503 | if (mLock.getHoldCount() > 1) { |
| 504 | if (mInnerTransactionIsSuccessful) { |
| 505 | String msg = "Cannot call beginTransaction between " |
| 506 | + "calling setTransactionSuccessful and endTransaction"; |
| 507 | IllegalStateException e = new IllegalStateException(msg); |
| 508 | Log.e(TAG, "beginTransaction() failed", e); |
| 509 | throw e; |
| 510 | } |
| 511 | ok = true; |
| 512 | return; |
| 513 | } |
| 514 | |
| 515 | // This thread didn't already have the lock, so begin a database |
| 516 | // transaction now. |
| 517 | execSQL("BEGIN EXCLUSIVE;"); |
Fred Quintana | c4516a7 | 2009-09-03 12:14:06 -0700 | [diff] [blame] | 518 | mTransactionListener = transactionListener; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 519 | mTransactionIsSuccessful = true; |
| 520 | mInnerTransactionIsSuccessful = false; |
Fred Quintana | c4516a7 | 2009-09-03 12:14:06 -0700 | [diff] [blame] | 521 | if (transactionListener != null) { |
| 522 | try { |
| 523 | transactionListener.onBegin(); |
| 524 | } catch (RuntimeException e) { |
| 525 | execSQL("ROLLBACK;"); |
| 526 | throw e; |
| 527 | } |
| 528 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 529 | ok = true; |
| 530 | } finally { |
| 531 | if (!ok) { |
| 532 | // beginTransaction is called before the try block so we must release the lock in |
| 533 | // the case of failure. |
| 534 | unlockForced(); |
| 535 | } |
| 536 | } |
| 537 | } |
| 538 | |
| 539 | /** |
| 540 | * End a transaction. See beginTransaction for notes about how to use this and when transactions |
| 541 | * are committed and rolled back. |
| 542 | */ |
| 543 | public void endTransaction() { |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 544 | if (!isOpen()) { |
| 545 | throw new IllegalStateException("database not open"); |
| 546 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 547 | if (!mLock.isHeldByCurrentThread()) { |
| 548 | throw new IllegalStateException("no transaction pending"); |
| 549 | } |
| 550 | try { |
| 551 | if (mInnerTransactionIsSuccessful) { |
| 552 | mInnerTransactionIsSuccessful = false; |
| 553 | } else { |
| 554 | mTransactionIsSuccessful = false; |
| 555 | } |
| 556 | if (mLock.getHoldCount() != 1) { |
| 557 | return; |
| 558 | } |
Fred Quintana | c4516a7 | 2009-09-03 12:14:06 -0700 | [diff] [blame] | 559 | RuntimeException savedException = null; |
| 560 | if (mTransactionListener != null) { |
| 561 | try { |
| 562 | if (mTransactionIsSuccessful) { |
| 563 | mTransactionListener.onCommit(); |
| 564 | } else { |
| 565 | mTransactionListener.onRollback(); |
| 566 | } |
| 567 | } catch (RuntimeException e) { |
| 568 | savedException = e; |
| 569 | mTransactionIsSuccessful = false; |
| 570 | } |
| 571 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 572 | if (mTransactionIsSuccessful) { |
Brad Fitzpatrick | b28c797 | 2010-02-12 12:49:41 -0800 | [diff] [blame] | 573 | execSQL(COMMIT_SQL); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 574 | } else { |
| 575 | try { |
| 576 | execSQL("ROLLBACK;"); |
Fred Quintana | c4516a7 | 2009-09-03 12:14:06 -0700 | [diff] [blame] | 577 | if (savedException != null) { |
| 578 | throw savedException; |
| 579 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 580 | } catch (SQLException e) { |
| 581 | if (Config.LOGD) { |
| 582 | Log.d(TAG, "exception during rollback, maybe the DB previously " |
| 583 | + "performed an auto-rollback"); |
| 584 | } |
| 585 | } |
| 586 | } |
| 587 | } finally { |
Fred Quintana | c4516a7 | 2009-09-03 12:14:06 -0700 | [diff] [blame] | 588 | mTransactionListener = null; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 589 | unlockForced(); |
| 590 | if (Config.LOGV) { |
| 591 | Log.v(TAG, "unlocked " + Thread.currentThread() |
| 592 | + ", holdCount is " + mLock.getHoldCount()); |
| 593 | } |
| 594 | } |
| 595 | } |
| 596 | |
| 597 | /** |
| 598 | * Marks the current transaction as successful. Do not do any more database work between |
| 599 | * calling this and calling endTransaction. Do as little non-database work as possible in that |
| 600 | * situation too. If any errors are encountered between this and endTransaction the transaction |
| 601 | * will still be committed. |
| 602 | * |
| 603 | * @throws IllegalStateException if the current thread is not in a transaction or the |
| 604 | * transaction is already marked as successful. |
| 605 | */ |
| 606 | public void setTransactionSuccessful() { |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 607 | if (!isOpen()) { |
| 608 | throw new IllegalStateException("database not open"); |
| 609 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 610 | if (!mLock.isHeldByCurrentThread()) { |
| 611 | throw new IllegalStateException("no transaction pending"); |
| 612 | } |
| 613 | if (mInnerTransactionIsSuccessful) { |
| 614 | throw new IllegalStateException( |
| 615 | "setTransactionSuccessful may only be called once per call to beginTransaction"); |
| 616 | } |
| 617 | mInnerTransactionIsSuccessful = true; |
| 618 | } |
| 619 | |
| 620 | /** |
| 621 | * return true if there is a transaction pending |
| 622 | */ |
| 623 | public boolean inTransaction() { |
| 624 | return mLock.getHoldCount() > 0; |
| 625 | } |
| 626 | |
| 627 | /** |
| 628 | * Checks if the database lock is held by this thread. |
| 629 | * |
| 630 | * @return true, if this thread is holding the database lock. |
| 631 | */ |
| 632 | public boolean isDbLockedByCurrentThread() { |
| 633 | return mLock.isHeldByCurrentThread(); |
| 634 | } |
| 635 | |
| 636 | /** |
| 637 | * Checks if the database is locked by another thread. This is |
| 638 | * just an estimate, since this status can change at any time, |
| 639 | * including after the call is made but before the result has |
| 640 | * been acted upon. |
| 641 | * |
| 642 | * @return true, if the database is locked by another thread |
| 643 | */ |
| 644 | public boolean isDbLockedByOtherThreads() { |
| 645 | return !mLock.isHeldByCurrentThread() && mLock.isLocked(); |
| 646 | } |
| 647 | |
| 648 | /** |
| 649 | * Temporarily end the transaction to let other threads run. The transaction is assumed to be |
| 650 | * successful so far. Do not call setTransactionSuccessful before calling this. When this |
| 651 | * returns a new transaction will have been created but not marked as successful. |
| 652 | * @return true if the transaction was yielded |
| 653 | * @deprecated if the db is locked more than once (becuase of nested transactions) then the lock |
| 654 | * will not be yielded. Use yieldIfContendedSafely instead. |
| 655 | */ |
Dianne Hackborn | 4a51c20 | 2009-08-21 15:14:02 -0700 | [diff] [blame] | 656 | @Deprecated |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 657 | public boolean yieldIfContended() { |
Fred Quintana | 5c7aede | 2009-08-27 21:41:27 -0700 | [diff] [blame] | 658 | return yieldIfContendedHelper(false /* do not check yielding */, |
| 659 | -1 /* sleepAfterYieldDelay */); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 660 | } |
| 661 | |
| 662 | /** |
| 663 | * Temporarily end the transaction to let other threads run. The transaction is assumed to be |
| 664 | * successful so far. Do not call setTransactionSuccessful before calling this. When this |
| 665 | * returns a new transaction will have been created but not marked as successful. This assumes |
| 666 | * that there are no nested transactions (beginTransaction has only been called once) and will |
Fred Quintana | 5c7aede | 2009-08-27 21:41:27 -0700 | [diff] [blame] | 667 | * throw an exception if that is not the case. |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 668 | * @return true if the transaction was yielded |
| 669 | */ |
| 670 | public boolean yieldIfContendedSafely() { |
Fred Quintana | 5c7aede | 2009-08-27 21:41:27 -0700 | [diff] [blame] | 671 | return yieldIfContendedHelper(true /* check yielding */, -1 /* sleepAfterYieldDelay*/); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 672 | } |
| 673 | |
Fred Quintana | 5c7aede | 2009-08-27 21:41:27 -0700 | [diff] [blame] | 674 | /** |
| 675 | * Temporarily end the transaction to let other threads run. The transaction is assumed to be |
| 676 | * successful so far. Do not call setTransactionSuccessful before calling this. When this |
| 677 | * returns a new transaction will have been created but not marked as successful. This assumes |
| 678 | * that there are no nested transactions (beginTransaction has only been called once) and will |
| 679 | * throw an exception if that is not the case. |
| 680 | * @param sleepAfterYieldDelay if > 0, sleep this long before starting a new transaction if |
| 681 | * the lock was actually yielded. This will allow other background threads to make some |
| 682 | * more progress than they would if we started the transaction immediately. |
| 683 | * @return true if the transaction was yielded |
| 684 | */ |
| 685 | public boolean yieldIfContendedSafely(long sleepAfterYieldDelay) { |
| 686 | return yieldIfContendedHelper(true /* check yielding */, sleepAfterYieldDelay); |
| 687 | } |
| 688 | |
| 689 | private boolean yieldIfContendedHelper(boolean checkFullyYielded, long sleepAfterYieldDelay) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 690 | if (mLock.getQueueLength() == 0) { |
| 691 | // Reset the lock acquire time since we know that the thread was willing to yield |
| 692 | // the lock at this time. |
| 693 | mLockAcquiredWallTime = SystemClock.elapsedRealtime(); |
| 694 | mLockAcquiredThreadTime = Debug.threadCpuTimeNanos(); |
| 695 | return false; |
| 696 | } |
| 697 | setTransactionSuccessful(); |
Fred Quintana | c4516a7 | 2009-09-03 12:14:06 -0700 | [diff] [blame] | 698 | SQLiteTransactionListener transactionListener = mTransactionListener; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 699 | endTransaction(); |
| 700 | if (checkFullyYielded) { |
| 701 | if (this.isDbLockedByCurrentThread()) { |
| 702 | throw new IllegalStateException( |
| 703 | "Db locked more than once. yielfIfContended cannot yield"); |
| 704 | } |
| 705 | } |
Fred Quintana | 5c7aede | 2009-08-27 21:41:27 -0700 | [diff] [blame] | 706 | if (sleepAfterYieldDelay > 0) { |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 707 | // Sleep for up to sleepAfterYieldDelay milliseconds, waking up periodically to |
| 708 | // check if anyone is using the database. If the database is not contended, |
| 709 | // retake the lock and return. |
| 710 | long remainingDelay = sleepAfterYieldDelay; |
| 711 | while (remainingDelay > 0) { |
| 712 | try { |
| 713 | Thread.sleep(remainingDelay < SLEEP_AFTER_YIELD_QUANTUM ? |
| 714 | remainingDelay : SLEEP_AFTER_YIELD_QUANTUM); |
| 715 | } catch (InterruptedException e) { |
| 716 | Thread.interrupted(); |
| 717 | } |
| 718 | remainingDelay -= SLEEP_AFTER_YIELD_QUANTUM; |
| 719 | if (mLock.getQueueLength() == 0) { |
| 720 | break; |
| 721 | } |
Fred Quintana | 5c7aede | 2009-08-27 21:41:27 -0700 | [diff] [blame] | 722 | } |
| 723 | } |
Fred Quintana | c4516a7 | 2009-09-03 12:14:06 -0700 | [diff] [blame] | 724 | beginTransactionWithListener(transactionListener); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 725 | return true; |
| 726 | } |
| 727 | |
| 728 | /** Maps table names to info about what to which _sync_time column to set |
| 729 | * to NULL on an update. This is used to support syncing. */ |
| 730 | private final Map<String, SyncUpdateInfo> mSyncUpdateInfo = |
| 731 | new HashMap<String, SyncUpdateInfo>(); |
| 732 | |
| 733 | public Map<String, String> getSyncedTables() { |
| 734 | synchronized(mSyncUpdateInfo) { |
| 735 | HashMap<String, String> tables = new HashMap<String, String>(); |
| 736 | for (String table : mSyncUpdateInfo.keySet()) { |
| 737 | SyncUpdateInfo info = mSyncUpdateInfo.get(table); |
| 738 | if (info.deletedTable != null) { |
| 739 | tables.put(table, info.deletedTable); |
| 740 | } |
| 741 | } |
| 742 | return tables; |
| 743 | } |
| 744 | } |
| 745 | |
| 746 | /** |
| 747 | * Internal class used to keep track what needs to be marked as changed |
| 748 | * when an update occurs. This is used for syncing, so the sync engine |
| 749 | * knows what data has been updated locally. |
| 750 | */ |
| 751 | static private class SyncUpdateInfo { |
| 752 | /** |
| 753 | * Creates the SyncUpdateInfo class. |
| 754 | * |
| 755 | * @param masterTable The table to set _sync_time to NULL in |
| 756 | * @param deletedTable The deleted table that corresponds to the |
| 757 | * master table |
| 758 | * @param foreignKey The key that refers to the primary key in table |
| 759 | */ |
| 760 | SyncUpdateInfo(String masterTable, String deletedTable, |
| 761 | String foreignKey) { |
| 762 | this.masterTable = masterTable; |
| 763 | this.deletedTable = deletedTable; |
| 764 | this.foreignKey = foreignKey; |
| 765 | } |
| 766 | |
| 767 | /** The table containing the _sync_time column */ |
| 768 | String masterTable; |
| 769 | |
| 770 | /** The deleted table that corresponds to the master table */ |
| 771 | String deletedTable; |
| 772 | |
| 773 | /** The key in the local table the row in table. It may be _id, if table |
| 774 | * is the local table. */ |
| 775 | String foreignKey; |
| 776 | } |
| 777 | |
| 778 | /** |
| 779 | * Used to allow returning sub-classes of {@link Cursor} when calling query. |
| 780 | */ |
| 781 | public interface CursorFactory { |
| 782 | /** |
| 783 | * See |
| 784 | * {@link SQLiteCursor#SQLiteCursor(SQLiteDatabase, SQLiteCursorDriver, |
| 785 | * String, SQLiteQuery)}. |
| 786 | */ |
| 787 | public Cursor newCursor(SQLiteDatabase db, |
| 788 | SQLiteCursorDriver masterQuery, String editTable, |
| 789 | SQLiteQuery query); |
| 790 | } |
| 791 | |
| 792 | /** |
| 793 | * Open the database according to the flags {@link #OPEN_READWRITE} |
| 794 | * {@link #OPEN_READONLY} {@link #CREATE_IF_NECESSARY} and/or {@link #NO_LOCALIZED_COLLATORS}. |
| 795 | * |
| 796 | * <p>Sets the locale of the database to the the system's current locale. |
| 797 | * Call {@link #setLocale} if you would like something else.</p> |
| 798 | * |
| 799 | * @param path to database file to open and/or create |
| 800 | * @param factory an optional factory class that is called to instantiate a |
| 801 | * cursor when query is called, or null for default |
| 802 | * @param flags to control database access mode |
| 803 | * @return the newly opened database |
| 804 | * @throws SQLiteException if the database cannot be opened |
| 805 | */ |
| 806 | public static SQLiteDatabase openDatabase(String path, CursorFactory factory, int flags) { |
Vasu Nori | c384920 | 2010-03-09 10:47:25 -0800 | [diff] [blame] | 807 | SQLiteDatabase sqliteDatabase = null; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 808 | try { |
| 809 | // Open the database. |
Vasu Nori | c384920 | 2010-03-09 10:47:25 -0800 | [diff] [blame] | 810 | sqliteDatabase = new SQLiteDatabase(path, factory, flags); |
Vasu Nori | 3ef94e2 | 2010-02-05 14:49:04 -0800 | [diff] [blame] | 811 | if (SQLiteDebug.DEBUG_SQL_STATEMENTS) { |
| 812 | sqliteDatabase.enableSqlTracing(path); |
| 813 | } |
| 814 | if (SQLiteDebug.DEBUG_SQL_TIME) { |
| 815 | sqliteDatabase.enableSqlProfiling(path); |
| 816 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 817 | } catch (SQLiteDatabaseCorruptException e) { |
| 818 | // Try to recover from this, if we can. |
| 819 | // TODO: should we do this for other open failures? |
| 820 | Log.e(TAG, "Deleting and re-creating corrupt database " + path, e); |
Jeff Hamilton | 082c2af | 2009-09-29 11:49:51 -0700 | [diff] [blame] | 821 | EventLog.writeEvent(EVENT_DB_CORRUPT, path); |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 822 | if (!path.equalsIgnoreCase(":memory")) { |
| 823 | // delete is only for non-memory database files |
| 824 | new File(path).delete(); |
| 825 | } |
Vasu Nori | c384920 | 2010-03-09 10:47:25 -0800 | [diff] [blame] | 826 | sqliteDatabase = new SQLiteDatabase(path, factory, flags); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 827 | } |
Vasu Nori | c384920 | 2010-03-09 10:47:25 -0800 | [diff] [blame] | 828 | ActiveDatabases.getInstance().mActiveDatabases.add( |
| 829 | new WeakReference<SQLiteDatabase>(sqliteDatabase)); |
| 830 | return sqliteDatabase; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 831 | } |
| 832 | |
| 833 | /** |
| 834 | * Equivalent to openDatabase(file.getPath(), factory, CREATE_IF_NECESSARY). |
| 835 | */ |
| 836 | public static SQLiteDatabase openOrCreateDatabase(File file, CursorFactory factory) { |
| 837 | return openOrCreateDatabase(file.getPath(), factory); |
| 838 | } |
| 839 | |
| 840 | /** |
| 841 | * Equivalent to openDatabase(path, factory, CREATE_IF_NECESSARY). |
| 842 | */ |
| 843 | public static SQLiteDatabase openOrCreateDatabase(String path, CursorFactory factory) { |
| 844 | return openDatabase(path, factory, CREATE_IF_NECESSARY); |
| 845 | } |
| 846 | |
| 847 | /** |
| 848 | * Create a memory backed SQLite database. Its contents will be destroyed |
| 849 | * when the database is closed. |
| 850 | * |
| 851 | * <p>Sets the locale of the database to the the system's current locale. |
| 852 | * Call {@link #setLocale} if you would like something else.</p> |
| 853 | * |
| 854 | * @param factory an optional factory class that is called to instantiate a |
| 855 | * cursor when query is called |
| 856 | * @return a SQLiteDatabase object, or null if the database can't be created |
| 857 | */ |
| 858 | public static SQLiteDatabase create(CursorFactory factory) { |
| 859 | // This is a magic string with special meaning for SQLite. |
| 860 | return openDatabase(":memory:", factory, CREATE_IF_NECESSARY); |
| 861 | } |
| 862 | |
| 863 | /** |
| 864 | * Close the database. |
| 865 | */ |
| 866 | public void close() { |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 867 | if (!isOpen()) { |
| 868 | return; // already closed |
| 869 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 870 | lock(); |
| 871 | try { |
| 872 | closeClosable(); |
Vasu Nori | f6373e9 | 2010-03-16 10:21:00 -0700 | [diff] [blame] | 873 | // close this database instance - regardless of its reference count value |
| 874 | onAllReferencesReleased(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 875 | } finally { |
| 876 | unlock(); |
| 877 | } |
| 878 | } |
| 879 | |
| 880 | private void closeClosable() { |
Vasu Nori | e495d1f | 2010-01-06 16:34:19 -0800 | [diff] [blame] | 881 | /* deallocate all compiled sql statement objects from mCompiledQueries cache. |
| 882 | * this should be done before de-referencing all {@link SQLiteClosable} objects |
| 883 | * from this database object because calling |
| 884 | * {@link SQLiteClosable#onAllReferencesReleasedFromContainer()} could cause the database |
| 885 | * to be closed. sqlite doesn't let a database close if there are |
| 886 | * any unfinalized statements - such as the compiled-sql objects in mCompiledQueries. |
| 887 | */ |
| 888 | deallocCachedSqlStatements(); |
| 889 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 890 | Iterator<Map.Entry<SQLiteClosable, Object>> iter = mPrograms.entrySet().iterator(); |
| 891 | while (iter.hasNext()) { |
| 892 | Map.Entry<SQLiteClosable, Object> entry = iter.next(); |
| 893 | SQLiteClosable program = entry.getKey(); |
| 894 | if (program != null) { |
| 895 | program.onAllReferencesReleasedFromContainer(); |
| 896 | } |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 897 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 898 | } |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 899 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 900 | /** |
| 901 | * Native call to close the database. |
| 902 | */ |
| 903 | private native void dbclose(); |
| 904 | |
| 905 | /** |
| 906 | * Gets the database version. |
| 907 | * |
| 908 | * @return the database version |
| 909 | */ |
| 910 | public int getVersion() { |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 911 | if (!isOpen()) { |
| 912 | throw new IllegalStateException("database not open"); |
| 913 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 914 | SQLiteStatement prog = null; |
| 915 | lock(); |
| 916 | try { |
| 917 | prog = new SQLiteStatement(this, "PRAGMA user_version;"); |
| 918 | long version = prog.simpleQueryForLong(); |
| 919 | return (int) version; |
| 920 | } finally { |
| 921 | if (prog != null) prog.close(); |
| 922 | unlock(); |
| 923 | } |
| 924 | } |
| 925 | |
| 926 | /** |
| 927 | * Sets the database version. |
| 928 | * |
| 929 | * @param version the new database version |
| 930 | */ |
| 931 | public void setVersion(int version) { |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 932 | if (!isOpen()) { |
| 933 | throw new IllegalStateException("database not open"); |
| 934 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 935 | execSQL("PRAGMA user_version = " + version); |
| 936 | } |
| 937 | |
| 938 | /** |
| 939 | * Returns the maximum size the database may grow to. |
| 940 | * |
| 941 | * @return the new maximum database size |
| 942 | */ |
| 943 | public long getMaximumSize() { |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 944 | if (!isOpen()) { |
| 945 | throw new IllegalStateException("database not open"); |
| 946 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 947 | SQLiteStatement prog = null; |
| 948 | lock(); |
| 949 | try { |
| 950 | prog = new SQLiteStatement(this, |
| 951 | "PRAGMA max_page_count;"); |
| 952 | long pageCount = prog.simpleQueryForLong(); |
| 953 | return pageCount * getPageSize(); |
| 954 | } finally { |
| 955 | if (prog != null) prog.close(); |
| 956 | unlock(); |
| 957 | } |
| 958 | } |
| 959 | |
| 960 | /** |
| 961 | * Sets the maximum size the database will grow to. The maximum size cannot |
| 962 | * be set below the current size. |
| 963 | * |
| 964 | * @param numBytes the maximum database size, in bytes |
| 965 | * @return the new maximum database size |
| 966 | */ |
| 967 | public long setMaximumSize(long numBytes) { |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 968 | if (!isOpen()) { |
| 969 | throw new IllegalStateException("database not open"); |
| 970 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 971 | SQLiteStatement prog = null; |
| 972 | lock(); |
| 973 | try { |
| 974 | long pageSize = getPageSize(); |
| 975 | long numPages = numBytes / pageSize; |
| 976 | // If numBytes isn't a multiple of pageSize, bump up a page |
| 977 | if ((numBytes % pageSize) != 0) { |
| 978 | numPages++; |
| 979 | } |
| 980 | prog = new SQLiteStatement(this, |
| 981 | "PRAGMA max_page_count = " + numPages); |
| 982 | long newPageCount = prog.simpleQueryForLong(); |
| 983 | return newPageCount * pageSize; |
| 984 | } finally { |
| 985 | if (prog != null) prog.close(); |
| 986 | unlock(); |
| 987 | } |
| 988 | } |
| 989 | |
| 990 | /** |
| 991 | * Returns the current database page size, in bytes. |
| 992 | * |
| 993 | * @return the database page size, in bytes |
| 994 | */ |
| 995 | public long getPageSize() { |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 996 | if (!isOpen()) { |
| 997 | throw new IllegalStateException("database not open"); |
| 998 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 999 | SQLiteStatement prog = null; |
| 1000 | lock(); |
| 1001 | try { |
| 1002 | prog = new SQLiteStatement(this, |
| 1003 | "PRAGMA page_size;"); |
| 1004 | long size = prog.simpleQueryForLong(); |
| 1005 | return size; |
| 1006 | } finally { |
| 1007 | if (prog != null) prog.close(); |
| 1008 | unlock(); |
| 1009 | } |
| 1010 | } |
| 1011 | |
| 1012 | /** |
| 1013 | * Sets the database page size. The page size must be a power of two. This |
| 1014 | * method does not work if any data has been written to the database file, |
| 1015 | * and must be called right after the database has been created. |
| 1016 | * |
| 1017 | * @param numBytes the database page size, in bytes |
| 1018 | */ |
| 1019 | public void setPageSize(long numBytes) { |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 1020 | if (!isOpen()) { |
| 1021 | throw new IllegalStateException("database not open"); |
| 1022 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1023 | execSQL("PRAGMA page_size = " + numBytes); |
| 1024 | } |
| 1025 | |
| 1026 | /** |
| 1027 | * Mark this table as syncable. When an update occurs in this table the |
| 1028 | * _sync_dirty field will be set to ensure proper syncing operation. |
| 1029 | * |
| 1030 | * @param table the table to mark as syncable |
| 1031 | * @param deletedTable The deleted table that corresponds to the |
| 1032 | * syncable table |
| 1033 | */ |
| 1034 | public void markTableSyncable(String table, String deletedTable) { |
| 1035 | markTableSyncable(table, "_id", table, deletedTable); |
| 1036 | } |
| 1037 | |
| 1038 | /** |
| 1039 | * Mark this table as syncable, with the _sync_dirty residing in another |
| 1040 | * table. When an update occurs in this table the _sync_dirty field of the |
| 1041 | * row in updateTable with the _id in foreignKey will be set to |
| 1042 | * ensure proper syncing operation. |
| 1043 | * |
| 1044 | * @param table an update on this table will trigger a sync time removal |
| 1045 | * @param foreignKey this is the column in table whose value is an _id in |
| 1046 | * updateTable |
| 1047 | * @param updateTable this is the table that will have its _sync_dirty |
| 1048 | */ |
| 1049 | public void markTableSyncable(String table, String foreignKey, |
| 1050 | String updateTable) { |
| 1051 | markTableSyncable(table, foreignKey, updateTable, null); |
| 1052 | } |
| 1053 | |
| 1054 | /** |
| 1055 | * Mark this table as syncable, with the _sync_dirty residing in another |
| 1056 | * table. When an update occurs in this table the _sync_dirty field of the |
| 1057 | * row in updateTable with the _id in foreignKey will be set to |
| 1058 | * ensure proper syncing operation. |
| 1059 | * |
| 1060 | * @param table an update on this table will trigger a sync time removal |
| 1061 | * @param foreignKey this is the column in table whose value is an _id in |
| 1062 | * updateTable |
| 1063 | * @param updateTable this is the table that will have its _sync_dirty |
| 1064 | * @param deletedTable The deleted table that corresponds to the |
| 1065 | * updateTable |
| 1066 | */ |
| 1067 | private void markTableSyncable(String table, String foreignKey, |
| 1068 | String updateTable, String deletedTable) { |
| 1069 | lock(); |
| 1070 | try { |
| 1071 | native_execSQL("SELECT _sync_dirty FROM " + updateTable |
| 1072 | + " LIMIT 0"); |
| 1073 | native_execSQL("SELECT " + foreignKey + " FROM " + table |
| 1074 | + " LIMIT 0"); |
| 1075 | } finally { |
| 1076 | unlock(); |
| 1077 | } |
| 1078 | |
| 1079 | SyncUpdateInfo info = new SyncUpdateInfo(updateTable, deletedTable, |
| 1080 | foreignKey); |
| 1081 | synchronized (mSyncUpdateInfo) { |
| 1082 | mSyncUpdateInfo.put(table, info); |
| 1083 | } |
| 1084 | } |
| 1085 | |
| 1086 | /** |
| 1087 | * Call for each row that is updated in a cursor. |
| 1088 | * |
| 1089 | * @param table the table the row is in |
| 1090 | * @param rowId the row ID of the updated row |
| 1091 | */ |
| 1092 | /* package */ void rowUpdated(String table, long rowId) { |
| 1093 | SyncUpdateInfo info; |
| 1094 | synchronized (mSyncUpdateInfo) { |
| 1095 | info = mSyncUpdateInfo.get(table); |
| 1096 | } |
| 1097 | if (info != null) { |
| 1098 | execSQL("UPDATE " + info.masterTable |
| 1099 | + " SET _sync_dirty=1 WHERE _id=(SELECT " + info.foreignKey |
| 1100 | + " FROM " + table + " WHERE _id=" + rowId + ")"); |
| 1101 | } |
| 1102 | } |
| 1103 | |
| 1104 | /** |
| 1105 | * Finds the name of the first table, which is editable. |
| 1106 | * |
| 1107 | * @param tables a list of tables |
| 1108 | * @return the first table listed |
| 1109 | */ |
| 1110 | public static String findEditTable(String tables) { |
| 1111 | if (!TextUtils.isEmpty(tables)) { |
| 1112 | // find the first word terminated by either a space or a comma |
| 1113 | int spacepos = tables.indexOf(' '); |
| 1114 | int commapos = tables.indexOf(','); |
| 1115 | |
| 1116 | if (spacepos > 0 && (spacepos < commapos || commapos < 0)) { |
| 1117 | return tables.substring(0, spacepos); |
| 1118 | } else if (commapos > 0 && (commapos < spacepos || spacepos < 0) ) { |
| 1119 | return tables.substring(0, commapos); |
| 1120 | } |
| 1121 | return tables; |
| 1122 | } else { |
| 1123 | throw new IllegalStateException("Invalid tables"); |
| 1124 | } |
| 1125 | } |
| 1126 | |
| 1127 | /** |
| 1128 | * Compiles an SQL statement into a reusable pre-compiled statement object. |
| 1129 | * The parameters are identical to {@link #execSQL(String)}. You may put ?s in the |
| 1130 | * statement and fill in those values with {@link SQLiteProgram#bindString} |
| 1131 | * and {@link SQLiteProgram#bindLong} each time you want to run the |
| 1132 | * statement. Statements may not return result sets larger than 1x1. |
| 1133 | * |
| 1134 | * @param sql The raw SQL statement, may contain ? for unknown values to be |
| 1135 | * bound later. |
| 1136 | * @return a pre-compiled statement object. |
| 1137 | */ |
| 1138 | public SQLiteStatement compileStatement(String sql) throws SQLException { |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 1139 | if (!isOpen()) { |
| 1140 | throw new IllegalStateException("database not open"); |
| 1141 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1142 | lock(); |
| 1143 | try { |
| 1144 | return new SQLiteStatement(this, sql); |
| 1145 | } finally { |
| 1146 | unlock(); |
| 1147 | } |
| 1148 | } |
| 1149 | |
| 1150 | /** |
| 1151 | * Query the given URL, returning a {@link Cursor} over the result set. |
| 1152 | * |
| 1153 | * @param distinct true if you want each row to be unique, false otherwise. |
| 1154 | * @param table The table name to compile the query against. |
| 1155 | * @param columns A list of which columns to return. Passing null will |
| 1156 | * return all columns, which is discouraged to prevent reading |
| 1157 | * data from storage that isn't going to be used. |
| 1158 | * @param selection A filter declaring which rows to return, formatted as an |
| 1159 | * SQL WHERE clause (excluding the WHERE itself). Passing null |
| 1160 | * will return all rows for the given table. |
| 1161 | * @param selectionArgs You may include ?s in selection, which will be |
| 1162 | * replaced by the values from selectionArgs, in order that they |
| 1163 | * appear in the selection. The values will be bound as Strings. |
| 1164 | * @param groupBy A filter declaring how to group rows, formatted as an SQL |
| 1165 | * GROUP BY clause (excluding the GROUP BY itself). Passing null |
| 1166 | * will cause the rows to not be grouped. |
| 1167 | * @param having A filter declare which row groups to include in the cursor, |
| 1168 | * if row grouping is being used, formatted as an SQL HAVING |
| 1169 | * clause (excluding the HAVING itself). Passing null will cause |
| 1170 | * all row groups to be included, and is required when row |
| 1171 | * grouping is not being used. |
| 1172 | * @param orderBy How to order the rows, formatted as an SQL ORDER BY clause |
| 1173 | * (excluding the ORDER BY itself). Passing null will use the |
| 1174 | * default sort order, which may be unordered. |
| 1175 | * @param limit Limits the number of rows returned by the query, |
| 1176 | * formatted as LIMIT clause. Passing null denotes no LIMIT clause. |
| 1177 | * @return A Cursor object, which is positioned before the first entry |
| 1178 | * @see Cursor |
| 1179 | */ |
| 1180 | public Cursor query(boolean distinct, String table, String[] columns, |
| 1181 | String selection, String[] selectionArgs, String groupBy, |
| 1182 | String having, String orderBy, String limit) { |
| 1183 | return queryWithFactory(null, distinct, table, columns, selection, selectionArgs, |
| 1184 | groupBy, having, orderBy, limit); |
| 1185 | } |
| 1186 | |
| 1187 | /** |
| 1188 | * Query the given URL, returning a {@link Cursor} over the result set. |
| 1189 | * |
| 1190 | * @param cursorFactory the cursor factory to use, or null for the default factory |
| 1191 | * @param distinct true if you want each row to be unique, false otherwise. |
| 1192 | * @param table The table name to compile the query against. |
| 1193 | * @param columns A list of which columns to return. Passing null will |
| 1194 | * return all columns, which is discouraged to prevent reading |
| 1195 | * data from storage that isn't going to be used. |
| 1196 | * @param selection A filter declaring which rows to return, formatted as an |
| 1197 | * SQL WHERE clause (excluding the WHERE itself). Passing null |
| 1198 | * will return all rows for the given table. |
| 1199 | * @param selectionArgs You may include ?s in selection, which will be |
| 1200 | * replaced by the values from selectionArgs, in order that they |
| 1201 | * appear in the selection. The values will be bound as Strings. |
| 1202 | * @param groupBy A filter declaring how to group rows, formatted as an SQL |
| 1203 | * GROUP BY clause (excluding the GROUP BY itself). Passing null |
| 1204 | * will cause the rows to not be grouped. |
| 1205 | * @param having A filter declare which row groups to include in the cursor, |
| 1206 | * if row grouping is being used, formatted as an SQL HAVING |
| 1207 | * clause (excluding the HAVING itself). Passing null will cause |
| 1208 | * all row groups to be included, and is required when row |
| 1209 | * grouping is not being used. |
| 1210 | * @param orderBy How to order the rows, formatted as an SQL ORDER BY clause |
| 1211 | * (excluding the ORDER BY itself). Passing null will use the |
| 1212 | * default sort order, which may be unordered. |
| 1213 | * @param limit Limits the number of rows returned by the query, |
| 1214 | * formatted as LIMIT clause. Passing null denotes no LIMIT clause. |
| 1215 | * @return A Cursor object, which is positioned before the first entry |
| 1216 | * @see Cursor |
| 1217 | */ |
| 1218 | public Cursor queryWithFactory(CursorFactory cursorFactory, |
| 1219 | boolean distinct, String table, String[] columns, |
| 1220 | String selection, String[] selectionArgs, String groupBy, |
| 1221 | String having, String orderBy, String limit) { |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 1222 | if (!isOpen()) { |
| 1223 | throw new IllegalStateException("database not open"); |
| 1224 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1225 | String sql = SQLiteQueryBuilder.buildQueryString( |
| 1226 | distinct, table, columns, selection, groupBy, having, orderBy, limit); |
| 1227 | |
| 1228 | return rawQueryWithFactory( |
| 1229 | cursorFactory, sql, selectionArgs, findEditTable(table)); |
| 1230 | } |
| 1231 | |
| 1232 | /** |
| 1233 | * Query the given table, returning a {@link Cursor} over the result set. |
| 1234 | * |
| 1235 | * @param table The table name to compile the query against. |
| 1236 | * @param columns A list of which columns to return. Passing null will |
| 1237 | * return all columns, which is discouraged to prevent reading |
| 1238 | * data from storage that isn't going to be used. |
| 1239 | * @param selection A filter declaring which rows to return, formatted as an |
| 1240 | * SQL WHERE clause (excluding the WHERE itself). Passing null |
| 1241 | * will return all rows for the given table. |
| 1242 | * @param selectionArgs You may include ?s in selection, which will be |
| 1243 | * replaced by the values from selectionArgs, in order that they |
| 1244 | * appear in the selection. The values will be bound as Strings. |
| 1245 | * @param groupBy A filter declaring how to group rows, formatted as an SQL |
| 1246 | * GROUP BY clause (excluding the GROUP BY itself). Passing null |
| 1247 | * will cause the rows to not be grouped. |
| 1248 | * @param having A filter declare which row groups to include in the cursor, |
| 1249 | * if row grouping is being used, formatted as an SQL HAVING |
| 1250 | * clause (excluding the HAVING itself). Passing null will cause |
| 1251 | * all row groups to be included, and is required when row |
| 1252 | * grouping is not being used. |
| 1253 | * @param orderBy How to order the rows, formatted as an SQL ORDER BY clause |
| 1254 | * (excluding the ORDER BY itself). Passing null will use the |
| 1255 | * default sort order, which may be unordered. |
| 1256 | * @return A {@link Cursor} object, which is positioned before the first entry |
| 1257 | * @see Cursor |
| 1258 | */ |
| 1259 | public Cursor query(String table, String[] columns, String selection, |
| 1260 | String[] selectionArgs, String groupBy, String having, |
| 1261 | String orderBy) { |
| 1262 | |
| 1263 | return query(false, table, columns, selection, selectionArgs, groupBy, |
| 1264 | having, orderBy, null /* limit */); |
| 1265 | } |
| 1266 | |
| 1267 | /** |
| 1268 | * Query the given table, returning a {@link Cursor} over the result set. |
| 1269 | * |
| 1270 | * @param table The table name to compile the query against. |
| 1271 | * @param columns A list of which columns to return. Passing null will |
| 1272 | * return all columns, which is discouraged to prevent reading |
| 1273 | * data from storage that isn't going to be used. |
| 1274 | * @param selection A filter declaring which rows to return, formatted as an |
| 1275 | * SQL WHERE clause (excluding the WHERE itself). Passing null |
| 1276 | * will return all rows for the given table. |
| 1277 | * @param selectionArgs You may include ?s in selection, which will be |
| 1278 | * replaced by the values from selectionArgs, in order that they |
| 1279 | * appear in the selection. The values will be bound as Strings. |
| 1280 | * @param groupBy A filter declaring how to group rows, formatted as an SQL |
| 1281 | * GROUP BY clause (excluding the GROUP BY itself). Passing null |
| 1282 | * will cause the rows to not be grouped. |
| 1283 | * @param having A filter declare which row groups to include in the cursor, |
| 1284 | * if row grouping is being used, formatted as an SQL HAVING |
| 1285 | * clause (excluding the HAVING itself). Passing null will cause |
| 1286 | * all row groups to be included, and is required when row |
| 1287 | * grouping is not being used. |
| 1288 | * @param orderBy How to order the rows, formatted as an SQL ORDER BY clause |
| 1289 | * (excluding the ORDER BY itself). Passing null will use the |
| 1290 | * default sort order, which may be unordered. |
| 1291 | * @param limit Limits the number of rows returned by the query, |
| 1292 | * formatted as LIMIT clause. Passing null denotes no LIMIT clause. |
| 1293 | * @return A {@link Cursor} object, which is positioned before the first entry |
| 1294 | * @see Cursor |
| 1295 | */ |
| 1296 | public Cursor query(String table, String[] columns, String selection, |
| 1297 | String[] selectionArgs, String groupBy, String having, |
| 1298 | String orderBy, String limit) { |
| 1299 | |
| 1300 | return query(false, table, columns, selection, selectionArgs, groupBy, |
| 1301 | having, orderBy, limit); |
| 1302 | } |
| 1303 | |
| 1304 | /** |
| 1305 | * Runs the provided SQL and returns a {@link Cursor} over the result set. |
| 1306 | * |
| 1307 | * @param sql the SQL query. The SQL string must not be ; terminated |
| 1308 | * @param selectionArgs You may include ?s in where clause in the query, |
| 1309 | * which will be replaced by the values from selectionArgs. The |
| 1310 | * values will be bound as Strings. |
| 1311 | * @return A {@link Cursor} object, which is positioned before the first entry |
| 1312 | */ |
| 1313 | public Cursor rawQuery(String sql, String[] selectionArgs) { |
| 1314 | return rawQueryWithFactory(null, sql, selectionArgs, null); |
| 1315 | } |
| 1316 | |
| 1317 | /** |
| 1318 | * Runs the provided SQL and returns a cursor over the result set. |
| 1319 | * |
| 1320 | * @param cursorFactory the cursor factory to use, or null for the default factory |
| 1321 | * @param sql the SQL query. The SQL string must not be ; terminated |
| 1322 | * @param selectionArgs You may include ?s in where clause in the query, |
| 1323 | * which will be replaced by the values from selectionArgs. The |
| 1324 | * values will be bound as Strings. |
| 1325 | * @param editTable the name of the first table, which is editable |
| 1326 | * @return A {@link Cursor} object, which is positioned before the first entry |
| 1327 | */ |
| 1328 | public Cursor rawQueryWithFactory( |
| 1329 | CursorFactory cursorFactory, String sql, String[] selectionArgs, |
| 1330 | String editTable) { |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 1331 | if (!isOpen()) { |
| 1332 | throw new IllegalStateException("database not open"); |
| 1333 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1334 | long timeStart = 0; |
| 1335 | |
Dmitri Plotnikov | 90142c9 | 2009-09-15 10:52:17 -0700 | [diff] [blame] | 1336 | if (Config.LOGV || mSlowQueryThreshold != -1) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1337 | timeStart = System.currentTimeMillis(); |
| 1338 | } |
| 1339 | |
| 1340 | SQLiteCursorDriver driver = new SQLiteDirectCursorDriver(this, sql, editTable); |
| 1341 | |
Dmitri Plotnikov | 90142c9 | 2009-09-15 10:52:17 -0700 | [diff] [blame] | 1342 | Cursor cursor = null; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1343 | try { |
Dmitri Plotnikov | 90142c9 | 2009-09-15 10:52:17 -0700 | [diff] [blame] | 1344 | cursor = driver.query( |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1345 | cursorFactory != null ? cursorFactory : mFactory, |
| 1346 | selectionArgs); |
| 1347 | } finally { |
Dmitri Plotnikov | 90142c9 | 2009-09-15 10:52:17 -0700 | [diff] [blame] | 1348 | if (Config.LOGV || mSlowQueryThreshold != -1) { |
| 1349 | |
| 1350 | // Force query execution |
| 1351 | if (cursor != null) { |
| 1352 | cursor.moveToFirst(); |
| 1353 | cursor.moveToPosition(-1); |
| 1354 | } |
| 1355 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1356 | long duration = System.currentTimeMillis() - timeStart; |
| 1357 | |
Dmitri Plotnikov | 90142c9 | 2009-09-15 10:52:17 -0700 | [diff] [blame] | 1358 | if (Config.LOGV || duration >= mSlowQueryThreshold) { |
| 1359 | Log.v(SQLiteCursor.TAG, |
| 1360 | "query (" + duration + " ms): " + driver.toString() + ", args are " |
| 1361 | + (selectionArgs != null |
| 1362 | ? TextUtils.join(",", selectionArgs) |
| 1363 | : "<null>")); |
| 1364 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1365 | } |
| 1366 | } |
Dmitri Plotnikov | 90142c9 | 2009-09-15 10:52:17 -0700 | [diff] [blame] | 1367 | return cursor; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1368 | } |
| 1369 | |
| 1370 | /** |
| 1371 | * Runs the provided SQL and returns a cursor over the result set. |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 1372 | * The cursor will read an initial set of rows and the return to the caller. |
| 1373 | * It will continue to read in batches and send data changed notifications |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1374 | * when the later batches are ready. |
| 1375 | * @param sql the SQL query. The SQL string must not be ; terminated |
| 1376 | * @param selectionArgs You may include ?s in where clause in the query, |
| 1377 | * which will be replaced by the values from selectionArgs. The |
| 1378 | * values will be bound as Strings. |
| 1379 | * @param initialRead set the initial count of items to read from the cursor |
| 1380 | * @param maxRead set the count of items to read on each iteration after the first |
| 1381 | * @return A {@link Cursor} object, which is positioned before the first entry |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 1382 | * |
Andy Stadler | f8a7cea | 2009-04-10 16:24:47 -0700 | [diff] [blame] | 1383 | * This work is incomplete and not fully tested or reviewed, so currently |
| 1384 | * hidden. |
| 1385 | * @hide |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1386 | */ |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 1387 | public Cursor rawQuery(String sql, String[] selectionArgs, |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1388 | int initialRead, int maxRead) { |
| 1389 | SQLiteCursor c = (SQLiteCursor)rawQueryWithFactory( |
| 1390 | null, sql, selectionArgs, null); |
| 1391 | c.setLoadStyle(initialRead, maxRead); |
| 1392 | return c; |
| 1393 | } |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 1394 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1395 | /** |
| 1396 | * Convenience method for inserting a row into the database. |
| 1397 | * |
| 1398 | * @param table the table to insert the row into |
| 1399 | * @param nullColumnHack SQL doesn't allow inserting a completely empty row, |
| 1400 | * so if initialValues is empty this column will explicitly be |
| 1401 | * assigned a NULL value |
| 1402 | * @param values this map contains the initial column values for the |
| 1403 | * row. The keys should be the column names and the values the |
| 1404 | * column values |
| 1405 | * @return the row ID of the newly inserted row, or -1 if an error occurred |
| 1406 | */ |
| 1407 | public long insert(String table, String nullColumnHack, ContentValues values) { |
| 1408 | try { |
Vasu Nori | 8d45e4e | 2010-02-05 22:35:47 -0800 | [diff] [blame] | 1409 | return insertWithOnConflict(table, nullColumnHack, values, CONFLICT_NONE); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1410 | } catch (SQLException e) { |
| 1411 | Log.e(TAG, "Error inserting " + values, e); |
| 1412 | return -1; |
| 1413 | } |
| 1414 | } |
| 1415 | |
| 1416 | /** |
| 1417 | * Convenience method for inserting a row into the database. |
| 1418 | * |
| 1419 | * @param table the table to insert the row into |
| 1420 | * @param nullColumnHack SQL doesn't allow inserting a completely empty row, |
| 1421 | * so if initialValues is empty this column will explicitly be |
| 1422 | * assigned a NULL value |
| 1423 | * @param values this map contains the initial column values for the |
| 1424 | * row. The keys should be the column names and the values the |
| 1425 | * column values |
| 1426 | * @throws SQLException |
| 1427 | * @return the row ID of the newly inserted row, or -1 if an error occurred |
| 1428 | */ |
| 1429 | public long insertOrThrow(String table, String nullColumnHack, ContentValues values) |
| 1430 | throws SQLException { |
Vasu Nori | 8d45e4e | 2010-02-05 22:35:47 -0800 | [diff] [blame] | 1431 | return insertWithOnConflict(table, nullColumnHack, values, CONFLICT_NONE); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1432 | } |
| 1433 | |
| 1434 | /** |
| 1435 | * Convenience method for replacing a row in the database. |
| 1436 | * |
| 1437 | * @param table the table in which to replace the row |
| 1438 | * @param nullColumnHack SQL doesn't allow inserting a completely empty row, |
| 1439 | * so if initialValues is empty this row will explicitly be |
| 1440 | * assigned a NULL value |
| 1441 | * @param initialValues this map contains the initial column values for |
| 1442 | * the row. The key |
| 1443 | * @return the row ID of the newly inserted row, or -1 if an error occurred |
| 1444 | */ |
| 1445 | public long replace(String table, String nullColumnHack, ContentValues initialValues) { |
| 1446 | try { |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 1447 | return insertWithOnConflict(table, nullColumnHack, initialValues, |
Vasu Nori | 8d45e4e | 2010-02-05 22:35:47 -0800 | [diff] [blame] | 1448 | CONFLICT_REPLACE); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1449 | } catch (SQLException e) { |
| 1450 | Log.e(TAG, "Error inserting " + initialValues, e); |
| 1451 | return -1; |
| 1452 | } |
| 1453 | } |
| 1454 | |
| 1455 | /** |
| 1456 | * Convenience method for replacing a row in the database. |
| 1457 | * |
| 1458 | * @param table the table in which to replace the row |
| 1459 | * @param nullColumnHack SQL doesn't allow inserting a completely empty row, |
| 1460 | * so if initialValues is empty this row will explicitly be |
| 1461 | * assigned a NULL value |
| 1462 | * @param initialValues this map contains the initial column values for |
| 1463 | * the row. The key |
| 1464 | * @throws SQLException |
| 1465 | * @return the row ID of the newly inserted row, or -1 if an error occurred |
| 1466 | */ |
| 1467 | public long replaceOrThrow(String table, String nullColumnHack, |
| 1468 | ContentValues initialValues) throws SQLException { |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 1469 | return insertWithOnConflict(table, nullColumnHack, initialValues, |
Vasu Nori | 8d45e4e | 2010-02-05 22:35:47 -0800 | [diff] [blame] | 1470 | CONFLICT_REPLACE); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1471 | } |
| 1472 | |
| 1473 | /** |
| 1474 | * General method for inserting a row into the database. |
| 1475 | * |
| 1476 | * @param table the table to insert the row into |
| 1477 | * @param nullColumnHack SQL doesn't allow inserting a completely empty row, |
| 1478 | * so if initialValues is empty this column will explicitly be |
| 1479 | * assigned a NULL value |
| 1480 | * @param initialValues this map contains the initial column values for the |
| 1481 | * row. The keys should be the column names and the values the |
| 1482 | * column values |
Vasu Nori | 8d45e4e | 2010-02-05 22:35:47 -0800 | [diff] [blame] | 1483 | * @param conflictAlgorithm for insert conflict resolver |
Vasu Nori | 6eb7c45 | 2010-01-27 14:31:24 -0800 | [diff] [blame] | 1484 | * @return the row ID of the newly inserted row |
| 1485 | * OR the primary key of the existing row if the input param 'conflictAlgorithm' = |
Vasu Nori | 8d45e4e | 2010-02-05 22:35:47 -0800 | [diff] [blame] | 1486 | * {@link #CONFLICT_IGNORE} |
Vasu Nori | 6eb7c45 | 2010-01-27 14:31:24 -0800 | [diff] [blame] | 1487 | * OR -1 if any error |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1488 | */ |
| 1489 | public long insertWithOnConflict(String table, String nullColumnHack, |
Vasu Nori | 6eb7c45 | 2010-01-27 14:31:24 -0800 | [diff] [blame] | 1490 | ContentValues initialValues, int conflictAlgorithm) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1491 | if (!isOpen()) { |
| 1492 | throw new IllegalStateException("database not open"); |
| 1493 | } |
| 1494 | |
| 1495 | // Measurements show most sql lengths <= 152 |
| 1496 | StringBuilder sql = new StringBuilder(152); |
| 1497 | sql.append("INSERT"); |
Vasu Nori | 8d45e4e | 2010-02-05 22:35:47 -0800 | [diff] [blame] | 1498 | sql.append(CONFLICT_VALUES[conflictAlgorithm]); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1499 | sql.append(" INTO "); |
| 1500 | sql.append(table); |
| 1501 | // Measurements show most values lengths < 40 |
| 1502 | StringBuilder values = new StringBuilder(40); |
| 1503 | |
| 1504 | Set<Map.Entry<String, Object>> entrySet = null; |
| 1505 | if (initialValues != null && initialValues.size() > 0) { |
| 1506 | entrySet = initialValues.valueSet(); |
| 1507 | Iterator<Map.Entry<String, Object>> entriesIter = entrySet.iterator(); |
| 1508 | sql.append('('); |
| 1509 | |
| 1510 | boolean needSeparator = false; |
| 1511 | while (entriesIter.hasNext()) { |
| 1512 | if (needSeparator) { |
| 1513 | sql.append(", "); |
| 1514 | values.append(", "); |
| 1515 | } |
| 1516 | needSeparator = true; |
| 1517 | Map.Entry<String, Object> entry = entriesIter.next(); |
| 1518 | sql.append(entry.getKey()); |
| 1519 | values.append('?'); |
| 1520 | } |
| 1521 | |
| 1522 | sql.append(')'); |
| 1523 | } else { |
| 1524 | sql.append("(" + nullColumnHack + ") "); |
| 1525 | values.append("NULL"); |
| 1526 | } |
| 1527 | |
| 1528 | sql.append(" VALUES("); |
| 1529 | sql.append(values); |
| 1530 | sql.append(");"); |
| 1531 | |
| 1532 | lock(); |
| 1533 | SQLiteStatement statement = null; |
| 1534 | try { |
| 1535 | statement = compileStatement(sql.toString()); |
| 1536 | |
| 1537 | // Bind the values |
| 1538 | if (entrySet != null) { |
| 1539 | int size = entrySet.size(); |
| 1540 | Iterator<Map.Entry<String, Object>> entriesIter = entrySet.iterator(); |
| 1541 | for (int i = 0; i < size; i++) { |
| 1542 | Map.Entry<String, Object> entry = entriesIter.next(); |
| 1543 | DatabaseUtils.bindObjectToProgram(statement, i + 1, entry.getValue()); |
| 1544 | } |
| 1545 | } |
| 1546 | |
| 1547 | // Run the program and then cleanup |
| 1548 | statement.execute(); |
| 1549 | |
| 1550 | long insertedRowId = lastInsertRow(); |
| 1551 | if (insertedRowId == -1) { |
| 1552 | Log.e(TAG, "Error inserting " + initialValues + " using " + sql); |
| 1553 | } else { |
| 1554 | if (Config.LOGD && Log.isLoggable(TAG, Log.VERBOSE)) { |
| 1555 | Log.v(TAG, "Inserting row " + insertedRowId + " from " |
| 1556 | + initialValues + " using " + sql); |
| 1557 | } |
| 1558 | } |
| 1559 | return insertedRowId; |
| 1560 | } catch (SQLiteDatabaseCorruptException e) { |
| 1561 | onCorruption(); |
| 1562 | throw e; |
| 1563 | } finally { |
| 1564 | if (statement != null) { |
| 1565 | statement.close(); |
| 1566 | } |
| 1567 | unlock(); |
| 1568 | } |
| 1569 | } |
| 1570 | |
| 1571 | /** |
| 1572 | * Convenience method for deleting rows in the database. |
| 1573 | * |
| 1574 | * @param table the table to delete from |
| 1575 | * @param whereClause the optional WHERE clause to apply when deleting. |
| 1576 | * Passing null will delete all rows. |
| 1577 | * @return the number of rows affected if a whereClause is passed in, 0 |
| 1578 | * otherwise. To remove all rows and get a count pass "1" as the |
| 1579 | * whereClause. |
| 1580 | */ |
| 1581 | public int delete(String table, String whereClause, String[] whereArgs) { |
| 1582 | if (!isOpen()) { |
| 1583 | throw new IllegalStateException("database not open"); |
| 1584 | } |
| 1585 | lock(); |
| 1586 | SQLiteStatement statement = null; |
| 1587 | try { |
| 1588 | statement = compileStatement("DELETE FROM " + table |
| 1589 | + (!TextUtils.isEmpty(whereClause) |
| 1590 | ? " WHERE " + whereClause : "")); |
| 1591 | if (whereArgs != null) { |
| 1592 | int numArgs = whereArgs.length; |
| 1593 | for (int i = 0; i < numArgs; i++) { |
| 1594 | DatabaseUtils.bindObjectToProgram(statement, i + 1, whereArgs[i]); |
| 1595 | } |
| 1596 | } |
| 1597 | statement.execute(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1598 | return lastChangeCount(); |
| 1599 | } catch (SQLiteDatabaseCorruptException e) { |
| 1600 | onCorruption(); |
| 1601 | throw e; |
| 1602 | } finally { |
| 1603 | if (statement != null) { |
| 1604 | statement.close(); |
| 1605 | } |
| 1606 | unlock(); |
| 1607 | } |
| 1608 | } |
| 1609 | |
| 1610 | /** |
| 1611 | * Convenience method for updating rows in the database. |
| 1612 | * |
| 1613 | * @param table the table to update in |
| 1614 | * @param values a map from column names to new column values. null is a |
| 1615 | * valid value that will be translated to NULL. |
| 1616 | * @param whereClause the optional WHERE clause to apply when updating. |
| 1617 | * Passing null will update all rows. |
| 1618 | * @return the number of rows affected |
| 1619 | */ |
| 1620 | public int update(String table, ContentValues values, String whereClause, String[] whereArgs) { |
Vasu Nori | 8d45e4e | 2010-02-05 22:35:47 -0800 | [diff] [blame] | 1621 | return updateWithOnConflict(table, values, whereClause, whereArgs, CONFLICT_NONE); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1622 | } |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 1623 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1624 | /** |
| 1625 | * Convenience method for updating rows in the database. |
| 1626 | * |
| 1627 | * @param table the table to update in |
| 1628 | * @param values a map from column names to new column values. null is a |
| 1629 | * valid value that will be translated to NULL. |
| 1630 | * @param whereClause the optional WHERE clause to apply when updating. |
| 1631 | * Passing null will update all rows. |
Vasu Nori | 8d45e4e | 2010-02-05 22:35:47 -0800 | [diff] [blame] | 1632 | * @param conflictAlgorithm for update conflict resolver |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1633 | * @return the number of rows affected |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1634 | */ |
Dmitri Plotnikov | 600bdd8 | 2009-09-01 12:12:20 -0700 | [diff] [blame] | 1635 | public int updateWithOnConflict(String table, ContentValues values, |
Vasu Nori | 6eb7c45 | 2010-01-27 14:31:24 -0800 | [diff] [blame] | 1636 | String whereClause, String[] whereArgs, int conflictAlgorithm) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1637 | if (!isOpen()) { |
| 1638 | throw new IllegalStateException("database not open"); |
| 1639 | } |
| 1640 | |
| 1641 | if (values == null || values.size() == 0) { |
| 1642 | throw new IllegalArgumentException("Empty values"); |
| 1643 | } |
| 1644 | |
| 1645 | StringBuilder sql = new StringBuilder(120); |
| 1646 | sql.append("UPDATE "); |
Vasu Nori | 8d45e4e | 2010-02-05 22:35:47 -0800 | [diff] [blame] | 1647 | sql.append(CONFLICT_VALUES[conflictAlgorithm]); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1648 | sql.append(table); |
| 1649 | sql.append(" SET "); |
| 1650 | |
| 1651 | Set<Map.Entry<String, Object>> entrySet = values.valueSet(); |
| 1652 | Iterator<Map.Entry<String, Object>> entriesIter = entrySet.iterator(); |
| 1653 | |
| 1654 | while (entriesIter.hasNext()) { |
| 1655 | Map.Entry<String, Object> entry = entriesIter.next(); |
| 1656 | sql.append(entry.getKey()); |
| 1657 | sql.append("=?"); |
| 1658 | if (entriesIter.hasNext()) { |
| 1659 | sql.append(", "); |
| 1660 | } |
| 1661 | } |
| 1662 | |
| 1663 | if (!TextUtils.isEmpty(whereClause)) { |
| 1664 | sql.append(" WHERE "); |
| 1665 | sql.append(whereClause); |
| 1666 | } |
| 1667 | |
| 1668 | lock(); |
| 1669 | SQLiteStatement statement = null; |
| 1670 | try { |
| 1671 | statement = compileStatement(sql.toString()); |
| 1672 | |
| 1673 | // Bind the values |
| 1674 | int size = entrySet.size(); |
| 1675 | entriesIter = entrySet.iterator(); |
| 1676 | int bindArg = 1; |
| 1677 | for (int i = 0; i < size; i++) { |
| 1678 | Map.Entry<String, Object> entry = entriesIter.next(); |
| 1679 | DatabaseUtils.bindObjectToProgram(statement, bindArg, entry.getValue()); |
| 1680 | bindArg++; |
| 1681 | } |
| 1682 | |
| 1683 | if (whereArgs != null) { |
| 1684 | size = whereArgs.length; |
| 1685 | for (int i = 0; i < size; i++) { |
| 1686 | statement.bindString(bindArg, whereArgs[i]); |
| 1687 | bindArg++; |
| 1688 | } |
| 1689 | } |
| 1690 | |
| 1691 | // Run the program and then cleanup |
| 1692 | statement.execute(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1693 | int numChangedRows = lastChangeCount(); |
| 1694 | if (Config.LOGD && Log.isLoggable(TAG, Log.VERBOSE)) { |
| 1695 | Log.v(TAG, "Updated " + numChangedRows + " using " + values + " and " + sql); |
| 1696 | } |
| 1697 | return numChangedRows; |
| 1698 | } catch (SQLiteDatabaseCorruptException e) { |
| 1699 | onCorruption(); |
| 1700 | throw e; |
| 1701 | } catch (SQLException e) { |
| 1702 | Log.e(TAG, "Error updating " + values + " using " + sql); |
| 1703 | throw e; |
| 1704 | } finally { |
| 1705 | if (statement != null) { |
| 1706 | statement.close(); |
| 1707 | } |
| 1708 | unlock(); |
| 1709 | } |
| 1710 | } |
| 1711 | |
| 1712 | /** |
| 1713 | * Execute a single SQL statement that is not a query. For example, CREATE |
| 1714 | * TABLE, DELETE, INSERT, etc. Multiple statements separated by ;s are not |
| 1715 | * supported. it takes a write lock |
| 1716 | * |
| 1717 | * @throws SQLException If the SQL string is invalid for some reason |
| 1718 | */ |
| 1719 | public void execSQL(String sql) throws SQLException { |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 1720 | if (!isOpen()) { |
| 1721 | throw new IllegalStateException("database not open"); |
| 1722 | } |
Brad Fitzpatrick | d72f718 | 2010-02-11 17:07:51 -0800 | [diff] [blame] | 1723 | long timeStart = SystemClock.uptimeMillis(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1724 | lock(); |
| 1725 | try { |
| 1726 | native_execSQL(sql); |
| 1727 | } catch (SQLiteDatabaseCorruptException e) { |
| 1728 | onCorruption(); |
| 1729 | throw e; |
| 1730 | } finally { |
| 1731 | unlock(); |
| 1732 | } |
Brad Fitzpatrick | b28c797 | 2010-02-12 12:49:41 -0800 | [diff] [blame] | 1733 | |
| 1734 | // Log commit statements along with the most recently executed |
| 1735 | // SQL statement for disambiguation. Note that instance |
| 1736 | // equality to COMMIT_SQL is safe here. |
| 1737 | if (sql == COMMIT_SQL) { |
| 1738 | logTimeStat(sql + mLastSqlStatement, timeStart); |
| 1739 | } else { |
| 1740 | logTimeStat(sql, timeStart); |
| 1741 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1742 | } |
| 1743 | |
| 1744 | /** |
| 1745 | * Execute a single SQL statement that is not a query. For example, CREATE |
| 1746 | * TABLE, DELETE, INSERT, etc. Multiple statements separated by ;s are not |
| 1747 | * supported. it takes a write lock, |
| 1748 | * |
| 1749 | * @param sql |
| 1750 | * @param bindArgs only byte[], String, Long and Double are supported in bindArgs. |
| 1751 | * @throws SQLException If the SQL string is invalid for some reason |
| 1752 | */ |
| 1753 | public void execSQL(String sql, Object[] bindArgs) throws SQLException { |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 1754 | if (!isOpen()) { |
| 1755 | throw new IllegalStateException("database not open"); |
| 1756 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1757 | if (bindArgs == null) { |
| 1758 | throw new IllegalArgumentException("Empty bindArgs"); |
| 1759 | } |
Brad Fitzpatrick | d72f718 | 2010-02-11 17:07:51 -0800 | [diff] [blame] | 1760 | long timeStart = SystemClock.uptimeMillis(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1761 | lock(); |
| 1762 | SQLiteStatement statement = null; |
| 1763 | try { |
| 1764 | statement = compileStatement(sql); |
| 1765 | if (bindArgs != null) { |
| 1766 | int numArgs = bindArgs.length; |
| 1767 | for (int i = 0; i < numArgs; i++) { |
| 1768 | DatabaseUtils.bindObjectToProgram(statement, i + 1, bindArgs[i]); |
| 1769 | } |
| 1770 | } |
| 1771 | statement.execute(); |
| 1772 | } catch (SQLiteDatabaseCorruptException e) { |
| 1773 | onCorruption(); |
| 1774 | throw e; |
| 1775 | } finally { |
| 1776 | if (statement != null) { |
| 1777 | statement.close(); |
| 1778 | } |
| 1779 | unlock(); |
| 1780 | } |
Dan Egnor | 1231195 | 2009-11-23 14:47:45 -0800 | [diff] [blame] | 1781 | logTimeStat(sql, timeStart); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1782 | } |
| 1783 | |
| 1784 | @Override |
| 1785 | protected void finalize() { |
| 1786 | if (isOpen()) { |
Vasu Nori | d606b4b | 2010-02-24 12:54:20 -0800 | [diff] [blame] | 1787 | Log.e(TAG, "close() was never explicitly called on database '" + |
| 1788 | mPath + "' ", mStackTrace); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1789 | closeClosable(); |
| 1790 | onAllReferencesReleased(); |
| 1791 | } |
| 1792 | } |
| 1793 | |
| 1794 | /** |
| 1795 | * Private constructor. See {@link #create} and {@link #openDatabase}. |
| 1796 | * |
| 1797 | * @param path The full path to the database |
| 1798 | * @param factory The factory to use when creating cursors, may be NULL. |
| 1799 | * @param flags 0 or {@link #NO_LOCALIZED_COLLATORS}. If the database file already |
| 1800 | * exists, mFlags will be updated appropriately. |
| 1801 | */ |
| 1802 | private SQLiteDatabase(String path, CursorFactory factory, int flags) { |
| 1803 | if (path == null) { |
| 1804 | throw new IllegalArgumentException("path should not be null"); |
| 1805 | } |
| 1806 | mFlags = flags; |
| 1807 | mPath = path; |
Dmitri Plotnikov | 90142c9 | 2009-09-15 10:52:17 -0700 | [diff] [blame] | 1808 | mSlowQueryThreshold = SystemProperties.getInt(LOG_SLOW_QUERIES_PROPERTY, -1); |
Vasu Nori | 08b448e | 2010-03-03 10:05:16 -0800 | [diff] [blame] | 1809 | mStackTrace = new DatabaseObjectNotClosedException().fillInStackTrace(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1810 | mFactory = factory; |
| 1811 | dbopen(mPath, mFlags); |
Vasu Nori | 5a03f36 | 2009-10-20 15:16:35 -0700 | [diff] [blame] | 1812 | if (SQLiteDebug.DEBUG_SQL_CACHE) { |
| 1813 | mTimeOpened = getTime(); |
| 1814 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1815 | mPrograms = new WeakHashMap<SQLiteClosable,Object>(); |
| 1816 | try { |
| 1817 | setLocale(Locale.getDefault()); |
| 1818 | } catch (RuntimeException e) { |
| 1819 | Log.e(TAG, "Failed to setLocale() when constructing, closing the database", e); |
| 1820 | dbclose(); |
Vasu Nori | 5a03f36 | 2009-10-20 15:16:35 -0700 | [diff] [blame] | 1821 | if (SQLiteDebug.DEBUG_SQL_CACHE) { |
| 1822 | mTimeClosed = getTime(); |
| 1823 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1824 | throw e; |
| 1825 | } |
| 1826 | } |
| 1827 | |
Vasu Nori | 5a03f36 | 2009-10-20 15:16:35 -0700 | [diff] [blame] | 1828 | private String getTime() { |
| 1829 | return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS ").format(System.currentTimeMillis()); |
| 1830 | } |
| 1831 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1832 | /** |
| 1833 | * return whether the DB is opened as read only. |
| 1834 | * @return true if DB is opened as read only |
| 1835 | */ |
| 1836 | public boolean isReadOnly() { |
| 1837 | return (mFlags & OPEN_READ_MASK) == OPEN_READONLY; |
| 1838 | } |
| 1839 | |
| 1840 | /** |
| 1841 | * @return true if the DB is currently open (has not been closed) |
| 1842 | */ |
| 1843 | public boolean isOpen() { |
| 1844 | return mNativeHandle != 0; |
| 1845 | } |
| 1846 | |
| 1847 | public boolean needUpgrade(int newVersion) { |
| 1848 | return newVersion > getVersion(); |
| 1849 | } |
| 1850 | |
| 1851 | /** |
| 1852 | * Getter for the path to the database file. |
| 1853 | * |
| 1854 | * @return the path to our database file. |
| 1855 | */ |
| 1856 | public final String getPath() { |
| 1857 | return mPath; |
| 1858 | } |
| 1859 | |
Vasu Nori | 5a03f36 | 2009-10-20 15:16:35 -0700 | [diff] [blame] | 1860 | |
Vasu Nori | 5a03f36 | 2009-10-20 15:16:35 -0700 | [diff] [blame] | 1861 | |
Brad Fitzpatrick | d72f718 | 2010-02-11 17:07:51 -0800 | [diff] [blame] | 1862 | /* package */ void logTimeStat(String sql, long beginMillis) { |
Brad Fitzpatrick | b28c797 | 2010-02-12 12:49:41 -0800 | [diff] [blame] | 1863 | // Keep track of the last statement executed here, as this is |
| 1864 | // the common funnel through which all methods of hitting |
| 1865 | // libsqlite eventually flow. |
| 1866 | mLastSqlStatement = sql; |
| 1867 | |
Dan Egnor | 1231195 | 2009-11-23 14:47:45 -0800 | [diff] [blame] | 1868 | // Sample fast queries in proportion to the time taken. |
| 1869 | // Quantize the % first, so the logged sampling probability |
| 1870 | // exactly equals the actual sampling rate for this query. |
| 1871 | |
| 1872 | int samplePercent; |
Brad Fitzpatrick | d72f718 | 2010-02-11 17:07:51 -0800 | [diff] [blame] | 1873 | long durationMillis = SystemClock.uptimeMillis() - beginMillis; |
| 1874 | if (durationMillis >= QUERY_LOG_TIME_IN_MILLIS) { |
Dan Egnor | 1231195 | 2009-11-23 14:47:45 -0800 | [diff] [blame] | 1875 | samplePercent = 100; |
| 1876 | } else { |
Brad Fitzpatrick | d72f718 | 2010-02-11 17:07:51 -0800 | [diff] [blame] | 1877 | samplePercent = (int) (100 * durationMillis / QUERY_LOG_TIME_IN_MILLIS) + 1; |
Dan Egnor | 799f721 | 2009-11-24 16:24:44 -0800 | [diff] [blame] | 1878 | if (mRandom.nextInt(100) >= samplePercent) return; |
Dan Egnor | 1231195 | 2009-11-23 14:47:45 -0800 | [diff] [blame] | 1879 | } |
| 1880 | |
| 1881 | if (sql.length() > QUERY_LOG_SQL_LENGTH) sql = sql.substring(0, QUERY_LOG_SQL_LENGTH); |
| 1882 | |
| 1883 | // ActivityThread.currentPackageName() only returns non-null if the |
| 1884 | // current thread is an application main thread. This parameter tells |
| 1885 | // us whether an event loop is blocked, and if so, which app it is. |
| 1886 | // |
| 1887 | // Sadly, there's no fast way to determine app name if this is *not* a |
| 1888 | // main thread, or when we are invoked via Binder (e.g. ContentProvider). |
| 1889 | // Hopefully the full path to the database will be informative enough. |
| 1890 | |
| 1891 | String blockingPackage = ActivityThread.currentPackageName(); |
| 1892 | if (blockingPackage == null) blockingPackage = ""; |
| 1893 | |
Brad Fitzpatrick | d72f718 | 2010-02-11 17:07:51 -0800 | [diff] [blame] | 1894 | EventLog.writeEvent( |
Brad Fitzpatrick | d833023 | 2010-02-19 10:59:01 -0800 | [diff] [blame] | 1895 | EVENT_DB_OPERATION, |
| 1896 | getPathForLogs(), |
| 1897 | sql, |
| 1898 | durationMillis, |
| 1899 | blockingPackage, |
| 1900 | samplePercent); |
| 1901 | } |
| 1902 | |
| 1903 | /** |
| 1904 | * Removes email addresses from database filenames before they're |
| 1905 | * logged to the EventLog where otherwise apps could potentially |
| 1906 | * read them. |
| 1907 | */ |
| 1908 | private String getPathForLogs() { |
| 1909 | if (mPathForLogs != null) { |
| 1910 | return mPathForLogs; |
| 1911 | } |
| 1912 | if (mPath == null) { |
| 1913 | return null; |
| 1914 | } |
| 1915 | if (mPath.indexOf('@') == -1) { |
| 1916 | mPathForLogs = mPath; |
| 1917 | } else { |
| 1918 | mPathForLogs = EMAIL_IN_DB_PATTERN.matcher(mPath).replaceAll("XX@YY"); |
| 1919 | } |
| 1920 | return mPathForLogs; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1921 | } |
| 1922 | |
| 1923 | /** |
| 1924 | * Sets the locale for this database. Does nothing if this database has |
| 1925 | * the NO_LOCALIZED_COLLATORS flag set or was opened read only. |
| 1926 | * @throws SQLException if the locale could not be set. The most common reason |
| 1927 | * for this is that there is no collator available for the locale you requested. |
| 1928 | * In this case the database remains unchanged. |
| 1929 | */ |
| 1930 | public void setLocale(Locale locale) { |
| 1931 | lock(); |
| 1932 | try { |
| 1933 | native_setLocale(locale.toString(), mFlags); |
| 1934 | } finally { |
| 1935 | unlock(); |
| 1936 | } |
| 1937 | } |
| 1938 | |
Vasu Nori | e495d1f | 2010-01-06 16:34:19 -0800 | [diff] [blame] | 1939 | /* |
| 1940 | * ============================================================================ |
| 1941 | * |
| 1942 | * The following methods deal with compiled-sql cache |
| 1943 | * ============================================================================ |
| 1944 | */ |
| 1945 | /** |
| 1946 | * adds the given sql and its compiled-statement-id-returned-by-sqlite to the |
| 1947 | * cache of compiledQueries attached to 'this'. |
| 1948 | * |
| 1949 | * if there is already a {@link SQLiteCompiledSql} in compiledQueries for the given sql, |
| 1950 | * the new {@link SQLiteCompiledSql} object is NOT inserted into the cache (i.e.,the current |
| 1951 | * mapping is NOT replaced with the new mapping). |
| 1952 | */ |
| 1953 | /* package */ void addToCompiledQueries(String sql, SQLiteCompiledSql compiledStatement) { |
| 1954 | if (mMaxSqlCacheSize == 0) { |
| 1955 | // for this database, there is no cache of compiled sql. |
| 1956 | if (SQLiteDebug.DEBUG_SQL_CACHE) { |
| 1957 | Log.v(TAG, "|NOT adding_sql_to_cache|" + getPath() + "|" + sql); |
| 1958 | } |
| 1959 | return; |
| 1960 | } |
| 1961 | |
| 1962 | SQLiteCompiledSql compiledSql = null; |
| 1963 | synchronized(mCompiledQueries) { |
| 1964 | // don't insert the new mapping if a mapping already exists |
| 1965 | compiledSql = mCompiledQueries.get(sql); |
| 1966 | if (compiledSql != null) { |
| 1967 | return; |
| 1968 | } |
| 1969 | // add this <sql, compiledStatement> to the cache |
| 1970 | if (mCompiledQueries.size() == mMaxSqlCacheSize) { |
Vasu Nori | 49d02ac | 2010-03-05 21:49:30 -0800 | [diff] [blame] | 1971 | /* |
| 1972 | * cache size of {@link #mMaxSqlCacheSize} is not enough for this app. |
| 1973 | * log a warning MAX_WARNINGS_ON_CACHESIZE_CONDITION times |
| 1974 | * chances are it is NOT using ? for bindargs - so caching is useless. |
| 1975 | * TODO: either let the callers set max cchesize for their app, or intelligently |
| 1976 | * figure out what should be cached for a given app. |
Vasu Nori | e495d1f | 2010-01-06 16:34:19 -0800 | [diff] [blame] | 1977 | */ |
Vasu Nori | 49d02ac | 2010-03-05 21:49:30 -0800 | [diff] [blame] | 1978 | if (++mCacheFullWarnings == MAX_WARNINGS_ON_CACHESIZE_CONDITION) { |
| 1979 | Log.w(TAG, "Reached MAX size for compiled-sql statement cache for database " + |
| 1980 | getPath() + "; i.e., NO space for this sql statement in cache: " + |
| 1981 | sql + ". Please change your sql statements to use '?' for " + |
| 1982 | "bindargs, instead of using actual values"); |
| 1983 | } |
| 1984 | // don't add this entry to cache |
| 1985 | } else { |
| 1986 | // cache is NOT full. add this to cache. |
| 1987 | mCompiledQueries.put(sql, compiledStatement); |
| 1988 | if (SQLiteDebug.DEBUG_SQL_CACHE) { |
| 1989 | Log.v(TAG, "|adding_sql_to_cache|" + getPath() + "|" + |
| 1990 | mCompiledQueries.size() + "|" + sql); |
Vasu Nori | e495d1f | 2010-01-06 16:34:19 -0800 | [diff] [blame] | 1991 | } |
| 1992 | } |
Vasu Nori | e495d1f | 2010-01-06 16:34:19 -0800 | [diff] [blame] | 1993 | } |
| 1994 | return; |
| 1995 | } |
| 1996 | |
| 1997 | |
| 1998 | private void deallocCachedSqlStatements() { |
| 1999 | synchronized (mCompiledQueries) { |
| 2000 | for (SQLiteCompiledSql compiledSql : mCompiledQueries.values()) { |
| 2001 | compiledSql.releaseSqlStatement(); |
| 2002 | } |
| 2003 | mCompiledQueries.clear(); |
| 2004 | } |
| 2005 | } |
| 2006 | |
| 2007 | /** |
| 2008 | * from the compiledQueries cache, returns the compiled-statement-id for the given sql. |
| 2009 | * returns null, if not found in the cache. |
| 2010 | */ |
| 2011 | /* package */ SQLiteCompiledSql getCompiledStatementForSql(String sql) { |
| 2012 | SQLiteCompiledSql compiledStatement = null; |
| 2013 | boolean cacheHit; |
| 2014 | synchronized(mCompiledQueries) { |
| 2015 | if (mMaxSqlCacheSize == 0) { |
| 2016 | // for this database, there is no cache of compiled sql. |
| 2017 | if (SQLiteDebug.DEBUG_SQL_CACHE) { |
| 2018 | Log.v(TAG, "|cache NOT found|" + getPath()); |
| 2019 | } |
| 2020 | return null; |
| 2021 | } |
| 2022 | cacheHit = (compiledStatement = mCompiledQueries.get(sql)) != null; |
| 2023 | } |
| 2024 | if (cacheHit) { |
| 2025 | mNumCacheHits++; |
| 2026 | } else { |
| 2027 | mNumCacheMisses++; |
| 2028 | } |
| 2029 | |
| 2030 | if (SQLiteDebug.DEBUG_SQL_CACHE) { |
| 2031 | Log.v(TAG, "|cache_stats|" + |
| 2032 | getPath() + "|" + mCompiledQueries.size() + |
| 2033 | "|" + mNumCacheHits + "|" + mNumCacheMisses + |
| 2034 | "|" + cacheHit + "|" + mTimeOpened + "|" + mTimeClosed + "|" + sql); |
| 2035 | } |
| 2036 | return compiledStatement; |
| 2037 | } |
| 2038 | |
| 2039 | /** |
| 2040 | * returns true if the given sql is cached in compiled-sql cache. |
| 2041 | * @hide |
| 2042 | */ |
| 2043 | public boolean isInCompiledSqlCache(String sql) { |
| 2044 | synchronized(mCompiledQueries) { |
| 2045 | return mCompiledQueries.containsKey(sql); |
| 2046 | } |
| 2047 | } |
| 2048 | |
| 2049 | /** |
| 2050 | * purges the given sql from the compiled-sql cache. |
| 2051 | * @hide |
| 2052 | */ |
| 2053 | public void purgeFromCompiledSqlCache(String sql) { |
| 2054 | synchronized(mCompiledQueries) { |
| 2055 | mCompiledQueries.remove(sql); |
| 2056 | } |
| 2057 | } |
| 2058 | |
| 2059 | /** |
| 2060 | * remove everything from the compiled sql cache |
| 2061 | * @hide |
| 2062 | */ |
| 2063 | public void resetCompiledSqlCache() { |
| 2064 | synchronized(mCompiledQueries) { |
| 2065 | mCompiledQueries.clear(); |
| 2066 | } |
| 2067 | } |
| 2068 | |
| 2069 | /** |
| 2070 | * return the current maxCacheSqlCacheSize |
| 2071 | * @hide |
| 2072 | */ |
| 2073 | public synchronized int getMaxSqlCacheSize() { |
| 2074 | return mMaxSqlCacheSize; |
| 2075 | } |
| 2076 | |
| 2077 | /** |
| 2078 | * set the max size of the compiled sql cache for this database after purging the cache. |
| 2079 | * (size of the cache = number of compiled-sql-statements stored in the cache). |
| 2080 | * |
| 2081 | * max cache size can ONLY be increased from its current size (default = 0). |
| 2082 | * if this method is called with smaller size than the current value of mMaxSqlCacheSize, |
| 2083 | * then IllegalStateException is thrown |
| 2084 | * |
| 2085 | * synchronized because we don't want t threads to change cache size at the same time. |
| 2086 | * @param cacheSize the size of the cache. can be (0 to MAX_SQL_CACHE_SIZE) |
| 2087 | * @throws IllegalStateException if input cacheSize > MAX_SQL_CACHE_SIZE or < 0 or |
| 2088 | * < the value set with previous setMaxSqlCacheSize() call. |
| 2089 | * |
| 2090 | * @hide |
| 2091 | */ |
| 2092 | public synchronized void setMaxSqlCacheSize(int cacheSize) { |
| 2093 | if (cacheSize > MAX_SQL_CACHE_SIZE || cacheSize < 0) { |
| 2094 | throw new IllegalStateException("expected value between 0 and " + MAX_SQL_CACHE_SIZE); |
| 2095 | } else if (cacheSize < mMaxSqlCacheSize) { |
| 2096 | throw new IllegalStateException("cannot set cacheSize to a value less than the value " + |
| 2097 | "set with previous setMaxSqlCacheSize() call."); |
| 2098 | } |
| 2099 | mMaxSqlCacheSize = cacheSize; |
| 2100 | } |
| 2101 | |
Vasu Nori | c384920 | 2010-03-09 10:47:25 -0800 | [diff] [blame] | 2102 | static class ActiveDatabases { |
| 2103 | private static final ActiveDatabases activeDatabases = new ActiveDatabases(); |
| 2104 | private HashSet<WeakReference<SQLiteDatabase>> mActiveDatabases = |
| 2105 | new HashSet<WeakReference<SQLiteDatabase>>(); |
| 2106 | private ActiveDatabases() {} // disable instantiation of this class |
| 2107 | static ActiveDatabases getInstance() {return activeDatabases;} |
| 2108 | } |
| 2109 | |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 2110 | /** |
| 2111 | * this method is used to collect data about ALL open databases in the current process. |
| 2112 | * bugreport is a user of this data. |
| 2113 | */ |
Vasu Nori | c384920 | 2010-03-09 10:47:25 -0800 | [diff] [blame] | 2114 | /* package */ static ArrayList<DbStats> getDbStats() { |
| 2115 | ArrayList<DbStats> dbStatsList = new ArrayList<DbStats>(); |
| 2116 | for (WeakReference<SQLiteDatabase> w : ActiveDatabases.getInstance().mActiveDatabases) { |
| 2117 | SQLiteDatabase db = w.get(); |
| 2118 | if (db == null || !db.isOpen()) { |
| 2119 | continue; |
| 2120 | } |
| 2121 | // get SQLITE_DBSTATUS_LOOKASIDE_USED for the db |
| 2122 | int lookasideUsed = db.native_getDbLookaside(); |
| 2123 | |
| 2124 | // get the lastnode of the dbname |
| 2125 | String path = db.getPath(); |
| 2126 | int indx = path.lastIndexOf("/"); |
| 2127 | String lastnode = path.substring((indx != -1) ? ++indx : 0); |
| 2128 | |
| 2129 | // get list of attached dbs and for each db, get its size and pagesize |
| 2130 | ArrayList<Pair<String, String>> attachedDbs = getAttachedDbs(db); |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 2131 | if (attachedDbs == null) { |
| 2132 | continue; |
| 2133 | } |
Vasu Nori | c384920 | 2010-03-09 10:47:25 -0800 | [diff] [blame] | 2134 | for (int i = 0; i < attachedDbs.size(); i++) { |
| 2135 | Pair<String, String> p = attachedDbs.get(i); |
| 2136 | long pageCount = getPragmaVal(db, p.first + ".page_count;"); |
| 2137 | |
| 2138 | // first entry in the attached db list is always the main database |
| 2139 | // don't worry about prefixing the dbname with "main" |
| 2140 | String dbName; |
| 2141 | if (i == 0) { |
| 2142 | dbName = lastnode; |
| 2143 | } else { |
| 2144 | // lookaside is only relevant for the main db |
| 2145 | lookasideUsed = 0; |
| 2146 | dbName = " (attached) " + p.first; |
| 2147 | // if the attached db has a path, attach the lastnode from the path to above |
| 2148 | if (p.second.trim().length() > 0) { |
| 2149 | int idx = p.second.lastIndexOf("/"); |
| 2150 | dbName += " : " + p.second.substring((idx != -1) ? ++idx : 0); |
| 2151 | } |
| 2152 | } |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 2153 | if (pageCount > 0) { |
| 2154 | dbStatsList.add(new DbStats(dbName, pageCount, db.getPageSize(), |
| 2155 | lookasideUsed)); |
| 2156 | } |
Vasu Nori | c384920 | 2010-03-09 10:47:25 -0800 | [diff] [blame] | 2157 | } |
| 2158 | } |
| 2159 | return dbStatsList; |
| 2160 | } |
| 2161 | |
| 2162 | /** |
| 2163 | * get the specified pragma value from sqlite for the specified database. |
| 2164 | * only handles pragma's that return int/long. |
| 2165 | * NO JAVA locks are held in this method. |
| 2166 | * TODO: use this to do all pragma's in this class |
| 2167 | */ |
| 2168 | private static long getPragmaVal(SQLiteDatabase db, String pragma) { |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 2169 | if (!db.isOpen()) { |
| 2170 | return 0; |
| 2171 | } |
Vasu Nori | c384920 | 2010-03-09 10:47:25 -0800 | [diff] [blame] | 2172 | SQLiteStatement prog = null; |
| 2173 | try { |
| 2174 | prog = new SQLiteStatement(db, "PRAGMA " + pragma); |
| 2175 | long val = prog.simpleQueryForLong(); |
| 2176 | return val; |
| 2177 | } finally { |
| 2178 | if (prog != null) prog.close(); |
| 2179 | } |
| 2180 | } |
| 2181 | |
| 2182 | /** |
| 2183 | * returns list of full pathnames of all attached databases |
| 2184 | * including the main database |
| 2185 | * TODO: move this to {@link DatabaseUtils} |
| 2186 | */ |
| 2187 | private static ArrayList<Pair<String, String>> getAttachedDbs(SQLiteDatabase dbObj) { |
Vasu Nori | f3cf8a4 | 2010-03-23 11:41:44 -0700 | [diff] [blame^] | 2188 | if (!dbObj.isOpen()) { |
| 2189 | return null; |
| 2190 | } |
Vasu Nori | c384920 | 2010-03-09 10:47:25 -0800 | [diff] [blame] | 2191 | ArrayList<Pair<String, String>> attachedDbs = new ArrayList<Pair<String, String>>(); |
| 2192 | Cursor c = dbObj.rawQuery("pragma database_list;", null); |
| 2193 | while (c.moveToNext()) { |
| 2194 | attachedDbs.add(new Pair<String, String>(c.getString(1), c.getString(2))); |
| 2195 | } |
| 2196 | c.close(); |
| 2197 | return attachedDbs; |
| 2198 | } |
| 2199 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 2200 | /** |
| 2201 | * Native call to open the database. |
| 2202 | * |
| 2203 | * @param path The full path to the database |
| 2204 | */ |
| 2205 | private native void dbopen(String path, int flags); |
| 2206 | |
| 2207 | /** |
Vasu Nori | 3ef94e2 | 2010-02-05 14:49:04 -0800 | [diff] [blame] | 2208 | * Native call to setup tracing of all sql statements |
| 2209 | * |
| 2210 | * @param path the full path to the database |
| 2211 | */ |
| 2212 | private native void enableSqlTracing(String path); |
| 2213 | |
| 2214 | /** |
| 2215 | * Native call to setup profiling of all sql statements. |
| 2216 | * currently, sqlite's profiling = printing of execution-time |
| 2217 | * (wall-clock time) of each of the sql statements, as they |
| 2218 | * are executed. |
| 2219 | * |
| 2220 | * @param path the full path to the database |
| 2221 | */ |
| 2222 | private native void enableSqlProfiling(String path); |
| 2223 | |
| 2224 | /** |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 2225 | * Native call to execute a raw SQL statement. {@link #lock} must be held |
| 2226 | * when calling this method. |
| 2227 | * |
| 2228 | * @param sql The raw SQL string |
| 2229 | * @throws SQLException |
| 2230 | */ |
| 2231 | /* package */ native void native_execSQL(String sql) throws SQLException; |
| 2232 | |
| 2233 | /** |
| 2234 | * Native call to set the locale. {@link #lock} must be held when calling |
| 2235 | * this method. |
| 2236 | * @throws SQLException |
| 2237 | */ |
| 2238 | /* package */ native void native_setLocale(String loc, int flags); |
| 2239 | |
| 2240 | /** |
| 2241 | * Returns the row ID of the last row inserted into the database. |
| 2242 | * |
| 2243 | * @return the row ID of the last row inserted into the database. |
| 2244 | */ |
| 2245 | /* package */ native long lastInsertRow(); |
| 2246 | |
| 2247 | /** |
| 2248 | * Returns the number of changes made in the last statement executed. |
| 2249 | * |
| 2250 | * @return the number of changes made in the last statement executed. |
| 2251 | */ |
| 2252 | /* package */ native int lastChangeCount(); |
Vasu Nori | c384920 | 2010-03-09 10:47:25 -0800 | [diff] [blame] | 2253 | |
| 2254 | /** |
| 2255 | * return the SQLITE_DBSTATUS_LOOKASIDE_USED documented here |
| 2256 | * http://www.sqlite.org/c3ref/c_dbstatus_lookaside_used.html |
| 2257 | * @return int value of SQLITE_DBSTATUS_LOOKASIDE_USED |
| 2258 | */ |
| 2259 | private native int native_getDbLookaside(); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 2260 | } |