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      1 /*
      2  * Copyright (C) 2011 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include "config.h"
     30 #include "IDBFactoryBackendImpl.h"
     31 
     32 #include "DOMStringList.h"
     33 #include "IDBDatabaseBackendImpl.h"
     34 #include "IDBDatabaseException.h"
     35 #include "IDBLevelDBBackingStore.h"
     36 #include "IDBSQLiteBackingStore.h"
     37 #include "IDBTransactionCoordinator.h"
     38 #include "SecurityOrigin.h"
     39 #include <wtf/Threading.h>
     40 #include <wtf/UnusedParam.h>
     41 
     42 #if ENABLE(INDEXED_DATABASE)
     43 
     44 namespace WebCore {
     45 
     46 IDBFactoryBackendImpl::IDBFactoryBackendImpl()
     47     : m_transactionCoordinator(IDBTransactionCoordinator::create())
     48 {
     49 }
     50 
     51 IDBFactoryBackendImpl::~IDBFactoryBackendImpl()
     52 {
     53 }
     54 
     55 void IDBFactoryBackendImpl::removeIDBDatabaseBackend(const String& uniqueIdentifier)
     56 {
     57     ASSERT(m_databaseBackendMap.contains(uniqueIdentifier));
     58     m_databaseBackendMap.remove(uniqueIdentifier);
     59 }
     60 
     61 void IDBFactoryBackendImpl::addIDBBackingStore(const String& uniqueIdentifier, IDBBackingStore* backingStore)
     62 {
     63     ASSERT(!m_backingStoreMap.contains(uniqueIdentifier));
     64     m_backingStoreMap.set(uniqueIdentifier, backingStore);
     65 }
     66 
     67 void IDBFactoryBackendImpl::removeIDBBackingStore(const String& uniqueIdentifier)
     68 {
     69     ASSERT(m_backingStoreMap.contains(uniqueIdentifier));
     70     m_backingStoreMap.remove(uniqueIdentifier);
     71 }
     72 
     73 void IDBFactoryBackendImpl::open(const String& name, PassRefPtr<IDBCallbacks> callbacks, PassRefPtr<SecurityOrigin> securityOrigin, Frame*, const String& dataDir, int64_t maximumSize, BackingStoreType backingStoreType)
     74 {
     75     String fileIdentifier = securityOrigin->databaseIdentifier();
     76     String uniqueIdentifier = fileIdentifier + "@" + name;
     77     IDBDatabaseBackendMap::iterator it = m_databaseBackendMap.find(uniqueIdentifier);
     78     if (it != m_databaseBackendMap.end()) {
     79         callbacks->onSuccess(it->second);
     80         return;
     81     }
     82 
     83     // FIXME: Everything from now on should be done on another thread.
     84 
     85     RefPtr<IDBBackingStore> backingStore;
     86     IDBBackingStoreMap::iterator it2 = m_backingStoreMap.find(fileIdentifier);
     87     if (it2 != m_backingStoreMap.end())
     88         backingStore = it2->second;
     89     else {
     90         if (backingStoreType == DefaultBackingStore)
     91             backingStore = IDBSQLiteBackingStore::open(securityOrigin.get(), dataDir, maximumSize, fileIdentifier, this);
     92 #if ENABLE(LEVELDB)
     93         else if (backingStoreType == LevelDBBackingStore)
     94             backingStore = IDBLevelDBBackingStore::open(securityOrigin.get(), dataDir, maximumSize, fileIdentifier, this);
     95 #endif
     96         if (!backingStore) {
     97             callbacks->onError(IDBDatabaseError::create(IDBDatabaseException::UNKNOWN_ERR, "Internal error."));
     98             return;
     99         }
    100     }
    101 
    102     RefPtr<IDBDatabaseBackendImpl> databaseBackend = IDBDatabaseBackendImpl::create(name, backingStore.get(), m_transactionCoordinator.get(), this, uniqueIdentifier);
    103     callbacks->onSuccess(databaseBackend.get());
    104     m_databaseBackendMap.set(uniqueIdentifier, databaseBackend.get());
    105 }
    106 
    107 } // namespace WebCore
    108 
    109 #endif // ENABLE(INDEXED_DATABASE)
    110