Wink Saville | d02a064 | 2012-06-14 12:11:20 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 Esmertec AG. |
| 3 | * Copyright (C) 2008 The Android Open Source Project |
| 4 | * |
| 5 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | * you may not use this file except in compliance with the License. |
| 7 | * You may obtain a copy of the License at |
| 8 | * |
| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | * |
| 11 | * Unless required by applicable law or agreed to in writing, software |
| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | * See the License for the specific language governing permissions and |
| 15 | * limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | package com.google.android.mms.util; |
| 19 | |
| 20 | import android.content.ContentUris; |
| 21 | import android.content.UriMatcher; |
| 22 | import android.net.Uri; |
| 23 | import android.provider.Telephony.Mms; |
| 24 | import android.util.Log; |
| 25 | |
| 26 | import java.util.HashMap; |
| 27 | import java.util.HashSet; |
| 28 | |
| 29 | public final class PduCache extends AbstractCache<Uri, PduCacheEntry> { |
| 30 | private static final String TAG = "PduCache"; |
| 31 | private static final boolean DEBUG = false; |
| 32 | private static final boolean LOCAL_LOGV = false; |
| 33 | |
| 34 | private static final int MMS_ALL = 0; |
| 35 | private static final int MMS_ALL_ID = 1; |
| 36 | private static final int MMS_INBOX = 2; |
| 37 | private static final int MMS_INBOX_ID = 3; |
| 38 | private static final int MMS_SENT = 4; |
| 39 | private static final int MMS_SENT_ID = 5; |
| 40 | private static final int MMS_DRAFTS = 6; |
| 41 | private static final int MMS_DRAFTS_ID = 7; |
| 42 | private static final int MMS_OUTBOX = 8; |
| 43 | private static final int MMS_OUTBOX_ID = 9; |
| 44 | private static final int MMS_CONVERSATION = 10; |
| 45 | private static final int MMS_CONVERSATION_ID = 11; |
| 46 | |
| 47 | private static final UriMatcher URI_MATCHER; |
| 48 | private static final HashMap<Integer, Integer> MATCH_TO_MSGBOX_ID_MAP; |
| 49 | |
| 50 | private static PduCache sInstance; |
| 51 | |
| 52 | static { |
| 53 | URI_MATCHER = new UriMatcher(UriMatcher.NO_MATCH); |
| 54 | URI_MATCHER.addURI("mms", null, MMS_ALL); |
| 55 | URI_MATCHER.addURI("mms", "#", MMS_ALL_ID); |
| 56 | URI_MATCHER.addURI("mms", "inbox", MMS_INBOX); |
| 57 | URI_MATCHER.addURI("mms", "inbox/#", MMS_INBOX_ID); |
| 58 | URI_MATCHER.addURI("mms", "sent", MMS_SENT); |
| 59 | URI_MATCHER.addURI("mms", "sent/#", MMS_SENT_ID); |
| 60 | URI_MATCHER.addURI("mms", "drafts", MMS_DRAFTS); |
| 61 | URI_MATCHER.addURI("mms", "drafts/#", MMS_DRAFTS_ID); |
| 62 | URI_MATCHER.addURI("mms", "outbox", MMS_OUTBOX); |
| 63 | URI_MATCHER.addURI("mms", "outbox/#", MMS_OUTBOX_ID); |
| 64 | URI_MATCHER.addURI("mms-sms", "conversations", MMS_CONVERSATION); |
| 65 | URI_MATCHER.addURI("mms-sms", "conversations/#", MMS_CONVERSATION_ID); |
| 66 | |
| 67 | MATCH_TO_MSGBOX_ID_MAP = new HashMap<Integer, Integer>(); |
| 68 | MATCH_TO_MSGBOX_ID_MAP.put(MMS_INBOX, Mms.MESSAGE_BOX_INBOX); |
| 69 | MATCH_TO_MSGBOX_ID_MAP.put(MMS_SENT, Mms.MESSAGE_BOX_SENT); |
| 70 | MATCH_TO_MSGBOX_ID_MAP.put(MMS_DRAFTS, Mms.MESSAGE_BOX_DRAFTS); |
| 71 | MATCH_TO_MSGBOX_ID_MAP.put(MMS_OUTBOX, Mms.MESSAGE_BOX_OUTBOX); |
| 72 | } |
| 73 | |
| 74 | private final HashMap<Integer, HashSet<Uri>> mMessageBoxes; |
| 75 | private final HashMap<Long, HashSet<Uri>> mThreads; |
| 76 | private final HashSet<Uri> mUpdating; |
| 77 | |
| 78 | private PduCache() { |
| 79 | mMessageBoxes = new HashMap<Integer, HashSet<Uri>>(); |
| 80 | mThreads = new HashMap<Long, HashSet<Uri>>(); |
| 81 | mUpdating = new HashSet<Uri>(); |
| 82 | } |
| 83 | |
| 84 | synchronized public static final PduCache getInstance() { |
| 85 | if (sInstance == null) { |
| 86 | if (LOCAL_LOGV) { |
| 87 | Log.v(TAG, "Constructing new PduCache instance."); |
| 88 | } |
| 89 | sInstance = new PduCache(); |
| 90 | } |
| 91 | return sInstance; |
| 92 | } |
| 93 | |
| 94 | @Override |
| 95 | synchronized public boolean put(Uri uri, PduCacheEntry entry) { |
| 96 | int msgBoxId = entry.getMessageBox(); |
| 97 | HashSet<Uri> msgBox = mMessageBoxes.get(msgBoxId); |
| 98 | if (msgBox == null) { |
| 99 | msgBox = new HashSet<Uri>(); |
| 100 | mMessageBoxes.put(msgBoxId, msgBox); |
| 101 | } |
| 102 | |
| 103 | long threadId = entry.getThreadId(); |
| 104 | HashSet<Uri> thread = mThreads.get(threadId); |
| 105 | if (thread == null) { |
| 106 | thread = new HashSet<Uri>(); |
| 107 | mThreads.put(threadId, thread); |
| 108 | } |
| 109 | |
| 110 | Uri finalKey = normalizeKey(uri); |
| 111 | boolean result = super.put(finalKey, entry); |
| 112 | if (result) { |
| 113 | msgBox.add(finalKey); |
| 114 | thread.add(finalKey); |
| 115 | } |
| 116 | setUpdating(uri, false); |
| 117 | return result; |
| 118 | } |
| 119 | |
| 120 | synchronized public void setUpdating(Uri uri, boolean updating) { |
| 121 | if (updating) { |
| 122 | mUpdating.add(uri); |
| 123 | } else { |
| 124 | mUpdating.remove(uri); |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | synchronized public boolean isUpdating(Uri uri) { |
| 129 | return mUpdating.contains(uri); |
| 130 | } |
| 131 | |
| 132 | @Override |
| 133 | synchronized public PduCacheEntry purge(Uri uri) { |
| 134 | int match = URI_MATCHER.match(uri); |
| 135 | switch (match) { |
| 136 | case MMS_ALL_ID: |
| 137 | return purgeSingleEntry(uri); |
| 138 | case MMS_INBOX_ID: |
| 139 | case MMS_SENT_ID: |
| 140 | case MMS_DRAFTS_ID: |
| 141 | case MMS_OUTBOX_ID: |
| 142 | String msgId = uri.getLastPathSegment(); |
| 143 | return purgeSingleEntry(Uri.withAppendedPath(Mms.CONTENT_URI, msgId)); |
| 144 | // Implicit batch of purge, return null. |
| 145 | case MMS_ALL: |
| 146 | case MMS_CONVERSATION: |
| 147 | purgeAll(); |
| 148 | return null; |
| 149 | case MMS_INBOX: |
| 150 | case MMS_SENT: |
| 151 | case MMS_DRAFTS: |
| 152 | case MMS_OUTBOX: |
| 153 | purgeByMessageBox(MATCH_TO_MSGBOX_ID_MAP.get(match)); |
| 154 | return null; |
| 155 | case MMS_CONVERSATION_ID: |
| 156 | purgeByThreadId(ContentUris.parseId(uri)); |
| 157 | return null; |
| 158 | default: |
| 159 | return null; |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | private PduCacheEntry purgeSingleEntry(Uri key) { |
| 164 | mUpdating.remove(key); |
| 165 | PduCacheEntry entry = super.purge(key); |
| 166 | if (entry != null) { |
| 167 | removeFromThreads(key, entry); |
| 168 | removeFromMessageBoxes(key, entry); |
| 169 | return entry; |
| 170 | } |
| 171 | return null; |
| 172 | } |
| 173 | |
| 174 | @Override |
| 175 | synchronized public void purgeAll() { |
| 176 | super.purgeAll(); |
| 177 | |
| 178 | mMessageBoxes.clear(); |
| 179 | mThreads.clear(); |
| 180 | mUpdating.clear(); |
| 181 | } |
| 182 | |
| 183 | /** |
| 184 | * @param uri The Uri to be normalized. |
| 185 | * @return Uri The normalized key of cached entry. |
| 186 | */ |
| 187 | private Uri normalizeKey(Uri uri) { |
| 188 | int match = URI_MATCHER.match(uri); |
| 189 | Uri normalizedKey = null; |
| 190 | |
| 191 | switch (match) { |
| 192 | case MMS_ALL_ID: |
| 193 | normalizedKey = uri; |
| 194 | break; |
| 195 | case MMS_INBOX_ID: |
| 196 | case MMS_SENT_ID: |
| 197 | case MMS_DRAFTS_ID: |
| 198 | case MMS_OUTBOX_ID: |
| 199 | String msgId = uri.getLastPathSegment(); |
| 200 | normalizedKey = Uri.withAppendedPath(Mms.CONTENT_URI, msgId); |
| 201 | break; |
| 202 | default: |
| 203 | return null; |
| 204 | } |
| 205 | |
| 206 | if (LOCAL_LOGV) { |
| 207 | Log.v(TAG, uri + " -> " + normalizedKey); |
| 208 | } |
| 209 | return normalizedKey; |
| 210 | } |
| 211 | |
| 212 | private void purgeByMessageBox(Integer msgBoxId) { |
| 213 | if (LOCAL_LOGV) { |
| 214 | Log.v(TAG, "Purge cache in message box: " + msgBoxId); |
| 215 | } |
| 216 | |
| 217 | if (msgBoxId != null) { |
| 218 | HashSet<Uri> msgBox = mMessageBoxes.remove(msgBoxId); |
| 219 | if (msgBox != null) { |
| 220 | for (Uri key : msgBox) { |
| 221 | mUpdating.remove(key); |
| 222 | PduCacheEntry entry = super.purge(key); |
| 223 | if (entry != null) { |
| 224 | removeFromThreads(key, entry); |
| 225 | } |
| 226 | } |
| 227 | } |
| 228 | } |
| 229 | } |
| 230 | |
| 231 | private void removeFromThreads(Uri key, PduCacheEntry entry) { |
| 232 | HashSet<Uri> thread = mThreads.get(entry.getThreadId()); |
| 233 | if (thread != null) { |
| 234 | thread.remove(key); |
| 235 | } |
| 236 | } |
| 237 | |
| 238 | private void purgeByThreadId(long threadId) { |
| 239 | if (LOCAL_LOGV) { |
| 240 | Log.v(TAG, "Purge cache in thread: " + threadId); |
| 241 | } |
| 242 | |
| 243 | HashSet<Uri> thread = mThreads.remove(threadId); |
| 244 | if (thread != null) { |
| 245 | for (Uri key : thread) { |
| 246 | mUpdating.remove(key); |
| 247 | PduCacheEntry entry = super.purge(key); |
| 248 | if (entry != null) { |
| 249 | removeFromMessageBoxes(key, entry); |
| 250 | } |
| 251 | } |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | private void removeFromMessageBoxes(Uri key, PduCacheEntry entry) { |
| 256 | HashSet<Uri> msgBox = mThreads.get(Long.valueOf(entry.getMessageBox())); |
| 257 | if (msgBox != null) { |
| 258 | msgBox.remove(key); |
| 259 | } |
| 260 | } |
| 261 | } |