Bjorn Bringert | 963cd006 | 2009-05-29 14:05:12 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 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 | |
Neal Nguyen | 1a44d5d | 2010-01-13 10:42:43 -0800 | [diff] [blame] | 17 | package android.content; |
Bjorn Bringert | 963cd006 | 2009-05-29 14:05:12 +0100 | [diff] [blame] | 18 | |
Bjorn Bringert | 963cd006 | 2009-05-29 14:05:12 +0100 | [diff] [blame] | 19 | import android.database.Cursor; |
Bjorn Bringert | a006b472 | 2010-04-14 14:43:26 +0100 | [diff] [blame] | 20 | import android.database.DatabaseUtils; |
Bjorn Bringert | 963cd006 | 2009-05-29 14:05:12 +0100 | [diff] [blame] | 21 | import android.database.sqlite.SQLiteDatabase; |
| 22 | import android.database.sqlite.SQLiteOpenHelper; |
| 23 | import android.net.Uri; |
Bjorn Bringert | 963cd006 | 2009-05-29 14:05:12 +0100 | [diff] [blame] | 24 | import android.os.ParcelFileDescriptor; |
| 25 | import android.util.Log; |
| 26 | |
| 27 | import java.io.File; |
| 28 | import java.io.FileNotFoundException; |
| 29 | import java.io.IOException; |
| 30 | import java.io.OutputStream; |
| 31 | |
| 32 | /** Simple test provider that runs in the local process. */ |
| 33 | public class MemoryFileProvider extends ContentProvider { |
| 34 | private static final String TAG = "MemoryFileProvider"; |
| 35 | |
| 36 | private static final String DATA_FILE = "data.bin"; |
| 37 | |
| 38 | // some random data |
| 39 | public static final byte[] TEST_BLOB = new byte[] { |
| 40 | -12, 127, 0, 3, 1, 2, 3, 4, 5, 6, 1, -128, -1, -54, -65, 35, |
| 41 | -53, -96, -74, -74, -55, -43, -69, 3, 52, -58, |
| 42 | -121, 127, 87, -73, 16, -13, -103, -65, -128, -36, |
| 43 | 107, 24, 118, -17, 97, 97, -88, 19, -94, -54, |
| 44 | 53, 43, 44, -27, -124, 28, -74, 26, 35, -36, |
| 45 | 16, -124, -31, -31, -128, -79, 108, 116, 43, -17 }; |
| 46 | |
| 47 | private SQLiteOpenHelper mOpenHelper; |
| 48 | |
| 49 | private static final int DATA_ID_BLOB = 1; |
| 50 | private static final int HUGE = 2; |
| 51 | private static final int FILE = 3; |
| 52 | |
| 53 | private static final UriMatcher sURLMatcher = new UriMatcher( |
| 54 | UriMatcher.NO_MATCH); |
| 55 | |
| 56 | static { |
| 57 | sURLMatcher.addURI("*", "data/#/blob", DATA_ID_BLOB); |
| 58 | sURLMatcher.addURI("*", "huge", HUGE); |
| 59 | sURLMatcher.addURI("*", "file", FILE); |
| 60 | } |
| 61 | |
| 62 | private static class DatabaseHelper extends SQLiteOpenHelper { |
| 63 | private static final String DATABASE_NAME = "local.db"; |
| 64 | private static final int DATABASE_VERSION = 1; |
| 65 | |
| 66 | public DatabaseHelper(Context context) { |
| 67 | super(context, DATABASE_NAME, null, DATABASE_VERSION); |
| 68 | } |
| 69 | |
| 70 | @Override |
| 71 | public void onCreate(SQLiteDatabase db) { |
| 72 | db.execSQL("CREATE TABLE data (" + |
| 73 | "_id INTEGER PRIMARY KEY," + |
| 74 | "_blob TEXT, " + |
| 75 | "integer INTEGER);"); |
| 76 | |
| 77 | // insert alarms |
| 78 | ContentValues values = new ContentValues(); |
| 79 | values.put("_id", 1); |
| 80 | values.put("_blob", TEST_BLOB); |
| 81 | values.put("integer", 100); |
| 82 | db.insert("data", null, values); |
| 83 | } |
| 84 | |
| 85 | @Override |
| 86 | public void onUpgrade(SQLiteDatabase db, int oldVersion, int currentVersion) { |
| 87 | Log.w(TAG, "Upgrading test database from version " + |
| 88 | oldVersion + " to " + currentVersion + |
| 89 | ", which will destroy all old data"); |
| 90 | db.execSQL("DROP TABLE IF EXISTS data"); |
| 91 | onCreate(db); |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | |
| 96 | public MemoryFileProvider() { |
| 97 | } |
| 98 | |
| 99 | @Override |
| 100 | public boolean onCreate() { |
| 101 | mOpenHelper = new DatabaseHelper(getContext()); |
| 102 | try { |
| 103 | OutputStream out = getContext().openFileOutput(DATA_FILE, Context.MODE_PRIVATE); |
| 104 | out.write(TEST_BLOB); |
| 105 | out.close(); |
| 106 | } catch (IOException ex) { |
| 107 | ex.printStackTrace(); |
| 108 | } |
| 109 | return true; |
| 110 | } |
| 111 | |
| 112 | @Override |
| 113 | public Cursor query(Uri url, String[] projectionIn, String selection, |
| 114 | String[] selectionArgs, String sort) { |
| 115 | throw new UnsupportedOperationException("query not supported"); |
| 116 | } |
| 117 | |
| 118 | @Override |
| 119 | public String getType(Uri url) { |
| 120 | int match = sURLMatcher.match(url); |
| 121 | switch (match) { |
| 122 | case DATA_ID_BLOB: |
| 123 | return "application/octet-stream"; |
| 124 | case FILE: |
| 125 | return "application/octet-stream"; |
| 126 | default: |
| 127 | throw new IllegalArgumentException("Unknown URL"); |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | @Override |
Bjorn Bringert | a006b472 | 2010-04-14 14:43:26 +0100 | [diff] [blame] | 132 | public ParcelFileDescriptor openFile(Uri url, String mode) throws FileNotFoundException { |
Bjorn Bringert | 963cd006 | 2009-05-29 14:05:12 +0100 | [diff] [blame] | 133 | int match = sURLMatcher.match(url); |
| 134 | switch (match) { |
| 135 | case DATA_ID_BLOB: |
| 136 | String sql = "SELECT _blob FROM data WHERE _id=" + url.getPathSegments().get(1); |
Bjorn Bringert | a006b472 | 2010-04-14 14:43:26 +0100 | [diff] [blame] | 137 | return getBlobColumnAsFile(url, mode, sql); |
Bjorn Bringert | 963cd006 | 2009-05-29 14:05:12 +0100 | [diff] [blame] | 138 | case HUGE: |
| 139 | try { |
Bjorn Bringert | a006b472 | 2010-04-14 14:43:26 +0100 | [diff] [blame] | 140 | return ParcelFileDescriptor.fromData(TEST_BLOB, null); |
Bjorn Bringert | 963cd006 | 2009-05-29 14:05:12 +0100 | [diff] [blame] | 141 | } catch (IOException ex) { |
| 142 | throw new FileNotFoundException("Error reading " + url + ":" + ex.toString()); |
| 143 | } |
| 144 | case FILE: |
| 145 | File file = getContext().getFileStreamPath(DATA_FILE); |
Bjorn Bringert | a006b472 | 2010-04-14 14:43:26 +0100 | [diff] [blame] | 146 | return ParcelFileDescriptor.open(file, ParcelFileDescriptor.MODE_READ_ONLY); |
Bjorn Bringert | 963cd006 | 2009-05-29 14:05:12 +0100 | [diff] [blame] | 147 | default: |
| 148 | throw new FileNotFoundException("No files supported by provider at " + url); |
| 149 | } |
| 150 | } |
| 151 | |
Bjorn Bringert | a006b472 | 2010-04-14 14:43:26 +0100 | [diff] [blame] | 152 | private ParcelFileDescriptor getBlobColumnAsFile(Uri url, String mode, String sql) |
Bjorn Bringert | 963cd006 | 2009-05-29 14:05:12 +0100 | [diff] [blame] | 153 | throws FileNotFoundException { |
| 154 | if (!"r".equals(mode)) { |
| 155 | throw new FileNotFoundException("Mode " + mode + " not supported for " + url); |
| 156 | } |
Bjorn Bringert | 963cd006 | 2009-05-29 14:05:12 +0100 | [diff] [blame] | 157 | |
Bjorn Bringert | a006b472 | 2010-04-14 14:43:26 +0100 | [diff] [blame] | 158 | SQLiteDatabase db = mOpenHelper.getReadableDatabase(); |
| 159 | return DatabaseUtils.blobFileDescriptorForQuery(db, sql, null); |
Bjorn Bringert | 963cd006 | 2009-05-29 14:05:12 +0100 | [diff] [blame] | 160 | } |
| 161 | |
| 162 | @Override |
| 163 | public int update(Uri url, ContentValues values, String where, String[] whereArgs) { |
| 164 | throw new UnsupportedOperationException("update not supported"); |
| 165 | } |
| 166 | |
| 167 | @Override |
| 168 | public Uri insert(Uri url, ContentValues initialValues) { |
| 169 | throw new UnsupportedOperationException("insert not supported"); |
| 170 | } |
| 171 | |
| 172 | @Override |
| 173 | public int delete(Uri url, String where, String[] whereArgs) { |
| 174 | throw new UnsupportedOperationException("delete not supported"); |
| 175 | } |
| 176 | } |