private void initCacheDatabase(Context context) {
assert !JniUtil.useChromiumHttpStack();
try {
mCacheDatabase = context.openOrCreateDatabase(CACHE_DATABASE_FILE, 0, null);
} catch (SQLiteException e) {
// try again by deleting the old db and create a new one
if (context.deleteDatabase(CACHE_DATABASE_FILE)) {
mCacheDatabase = context.openOrCreateDatabase(CACHE_DATABASE_FILE, 0, null);
}
}
mCacheDatabase.enableWriteAheadLogging();
// mCacheDatabase should not be null,
// the only case is RequestAPI test has problem to create db
if (mCacheDatabase == null) {
mInitialized = true;
notify();
return;
}
if (mCacheDatabase.getVersion() != CACHE_DATABASE_VERSION) {
mCacheDatabase.beginTransactionNonExclusive();
try {
upgradeCacheDatabase();
bootstrapCacheDatabase();
mCacheDatabase.setTransactionSuccessful();
} finally {
mCacheDatabase.endTransaction();
}
// Erase the files from the file system in the
// case that the database was updated and the
// there were existing cache content
CacheManager.removeAllCacheFiles();
}
// use read_uncommitted to speed up READ
mCacheDatabase.execSQL("PRAGMA read_uncommitted = true;");
// as only READ can be called in the
// non-WebViewWorkerThread, and read_uncommitted is used,
// we can turn off database lock to use transaction.
mCacheDatabase.setLockingEnabled(false);
// use InsertHelper for faster insertion
mCacheInserter = new DatabaseUtils.InsertHelper(mCacheDatabase, "cache");
mCacheUrlColIndex = mCacheInserter.getColumnIndex(CACHE_URL_COL);
mCacheFilePathColIndex = mCacheInserter.getColumnIndex(CACHE_FILE_PATH_COL);
mCacheLastModifyColIndex = mCacheInserter.getColumnIndex(CACHE_LAST_MODIFY_COL);
mCacheETagColIndex = mCacheInserter.getColumnIndex(CACHE_ETAG_COL);
mCacheExpiresColIndex = mCacheInserter.getColumnIndex(CACHE_EXPIRES_COL);
mCacheExpiresStringColIndex = mCacheInserter.getColumnIndex(CACHE_EXPIRES_STRING_COL);
mCacheMimeTypeColIndex = mCacheInserter.getColumnIndex(CACHE_MIMETYPE_COL);
mCacheEncodingColIndex = mCacheInserter.getColumnIndex(CACHE_ENCODING_COL);
mCacheHttpStatusColIndex = mCacheInserter.getColumnIndex(CACHE_HTTP_STATUS_COL);
mCacheLocationColIndex = mCacheInserter.getColumnIndex(CACHE_LOCATION_COL);
mCacheContentLengthColIndex = mCacheInserter.getColumnIndex(CACHE_CONTENTLENGTH_COL);
mCacheContentDispositionColIndex = mCacheInserter.getColumnIndex(CACHE_CONTENTDISPOSITION_COL);
mCacheCrossDomainColIndex = mCacheInserter.getColumnIndex(CACHE_CROSSDOMAIN_COL);
}
/**
* * Remove a cache item.
*
* @param url The url
*/
void removeCache(String url) {
assert !JniUtil.useChromiumHttpStack();
if (url == null || !checkInitialized()) {
return;
}
mCacheDatabase.execSQL("DELETE FROM cache WHERE url = ?", new String[] {url});
}
private synchronized void init(Context context) {
if (mInitialized) {
return;
}
initDatabase(context);
if (!JniUtil.useChromiumHttpStack()) {
initCacheDatabase(context);
}
// Thread done, notify.
mInitialized = true;
notify();
}
/**
* * Add or update a cache. CACHE_URL_COL is unique in the table.
*
* @param url The url
* @param c The CacheManager.CacheResult
*/
void addCache(String url, CacheResult c) {
assert !JniUtil.useChromiumHttpStack();
if (url == null || !checkInitialized()) {
return;
}
mCacheInserter.prepareForInsert();
mCacheInserter.bind(mCacheUrlColIndex, url);
mCacheInserter.bind(mCacheFilePathColIndex, c.localPath);
mCacheInserter.bind(mCacheLastModifyColIndex, c.lastModified);
mCacheInserter.bind(mCacheETagColIndex, c.etag);
mCacheInserter.bind(mCacheExpiresColIndex, c.expires);
mCacheInserter.bind(mCacheExpiresStringColIndex, c.expiresString);
mCacheInserter.bind(mCacheMimeTypeColIndex, c.mimeType);
mCacheInserter.bind(mCacheEncodingColIndex, c.encoding);
mCacheInserter.bind(mCacheHttpStatusColIndex, c.httpStatusCode);
mCacheInserter.bind(mCacheLocationColIndex, c.location);
mCacheInserter.bind(mCacheContentLengthColIndex, c.contentLength);
mCacheInserter.bind(mCacheContentDispositionColIndex, c.contentdisposition);
mCacheInserter.bind(mCacheCrossDomainColIndex, c.crossDomain);
mCacheInserter.execute();
}
/**
* * Get a cache item.
*
* @param url The url
* @return CacheResult The CacheManager.CacheResult
*/
CacheResult getCache(String url) {
assert !JniUtil.useChromiumHttpStack();
if (url == null || !checkInitialized()) {
return null;
}
Cursor cursor = null;
final String query =
"SELECT filepath, lastmodify, etag, expires, "
+ "expiresstring, mimetype, encoding, httpstatus, location, contentlength, "
+ "contentdisposition, crossdomain FROM cache WHERE url = ?";
try {
cursor = mCacheDatabase.rawQuery(query, new String[] {url});
if (cursor.moveToFirst()) {
CacheResult ret = new CacheResult();
ret.localPath = cursor.getString(0);
ret.lastModified = cursor.getString(1);
ret.etag = cursor.getString(2);
ret.expires = cursor.getLong(3);
ret.expiresString = cursor.getString(4);
ret.mimeType = cursor.getString(5);
ret.encoding = cursor.getString(6);
ret.httpStatusCode = cursor.getInt(7);
ret.location = cursor.getString(8);
ret.contentLength = cursor.getLong(9);
ret.contentdisposition = cursor.getString(10);
ret.crossDomain = cursor.getString(11);
return ret;
}
} catch (IllegalStateException e) {
Log.e(LOGTAG, "getCache", e);
} finally {
if (cursor != null) cursor.close();
}
return null;
}
