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/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef IDBDatabaseBackendImpl_h
#define IDBDatabaseBackendImpl_h
#include "IDBCallbacks.h"
#include "IDBDatabase.h"
#include <stdint.h>
#include <wtf/Deque.h>
#include <wtf/HashMap.h>
#include <wtf/ListHashSet.h>
#if ENABLE(INDEXED_DATABASE)
namespace WebCore {
class IDBBackingStore;
class IDBDatabase;
class IDBFactoryBackendImpl;
class IDBObjectStoreBackendImpl;
class IDBTransactionBackendImpl;
class IDBTransactionBackendInterface;
class IDBTransactionCoordinator;
class IDBDatabaseBackendImpl : public IDBDatabaseBackendInterface {
public:
static PassRefPtr<IDBDatabaseBackendImpl> create(const String& name, IDBBackingStore* database, IDBTransactionCoordinator*, IDBFactoryBackendImpl*, const String& uniqueIdentifier);
virtual ~IDBDatabaseBackendImpl();
PassRefPtr<IDBBackingStore> backingStore() const;
static const int64_t InvalidId = 0;
int64_t id() const { return m_id; }
void registerFrontendCallbacks(PassRefPtr<IDBDatabaseCallbacks>);
void openConnection(PassRefPtr<IDBCallbacks>);
void openConnectionWithVersion(PassRefPtr<IDBCallbacks>, int64_t version);
void deleteDatabase(PassRefPtr<IDBCallbacks>);
// IDBDatabaseBackendInterface
virtual IDBDatabaseMetadata metadata() const;
virtual PassRefPtr<IDBObjectStoreBackendInterface> createObjectStore(const String& name, const IDBKeyPath&, bool autoIncrement, IDBTransactionBackendInterface*, ExceptionCode&);
virtual void deleteObjectStore(const String& name, IDBTransactionBackendInterface*, ExceptionCode&);
virtual void setVersion(const String& version, PassRefPtr<IDBCallbacks>, PassRefPtr<IDBDatabaseCallbacks>, ExceptionCode&);
virtual PassRefPtr<IDBTransactionBackendInterface> transaction(DOMStringList* objectStoreNames, unsigned short mode, ExceptionCode&);
virtual void close(PassRefPtr<IDBDatabaseCallbacks>);
PassRefPtr<IDBObjectStoreBackendImpl> objectStore(const String& name);
IDBTransactionCoordinator* transactionCoordinator() const { return m_transactionCoordinator.get(); }
void transactionStarted(PassRefPtr<IDBTransactionBackendImpl>);
void transactionFinished(PassRefPtr<IDBTransactionBackendImpl>);
void transactionFinishedAndCompleteFired(PassRefPtr<IDBTransactionBackendImpl>);
void transactionFinishedAndAbortFired(PassRefPtr<IDBTransactionBackendImpl>);
private:
IDBDatabaseBackendImpl(const String& name, IDBBackingStore* database, IDBTransactionCoordinator*, IDBFactoryBackendImpl*, const String& uniqueIdentifier);
bool openInternal();
void runIntVersionChangeTransaction(int64_t requestedVersion, PassRefPtr<IDBCallbacks>);
void loadObjectStores();
int32_t connectionCount();
void processPendingCalls();
static void createObjectStoreInternal(ScriptExecutionContext*, PassRefPtr<IDBDatabaseBackendImpl>, PassRefPtr<IDBObjectStoreBackendImpl>, PassRefPtr<IDBTransactionBackendImpl>);
static void deleteObjectStoreInternal(ScriptExecutionContext*, PassRefPtr<IDBDatabaseBackendImpl>, PassRefPtr<IDBObjectStoreBackendImpl>, PassRefPtr<IDBTransactionBackendImpl>);
static void setVersionInternal(ScriptExecutionContext*, PassRefPtr<IDBDatabaseBackendImpl>, const String& version, PassRefPtr<IDBCallbacks>, PassRefPtr<IDBTransactionBackendImpl>);
static void setIntVersionInternal(ScriptExecutionContext*, PassRefPtr<IDBDatabaseBackendImpl>, int64_t version, PassRefPtr<IDBCallbacks>, PassRefPtr<IDBTransactionBackendInterface>);
// These are used as setVersion transaction abort tasks.
static void removeObjectStoreFromMap(ScriptExecutionContext*, PassRefPtr<IDBDatabaseBackendImpl>, PassRefPtr<IDBObjectStoreBackendImpl>);
static void addObjectStoreToMap(ScriptExecutionContext*, PassRefPtr<IDBDatabaseBackendImpl>, PassRefPtr<IDBObjectStoreBackendImpl>);
static void resetVersion(ScriptExecutionContext*, PassRefPtr<IDBDatabaseBackendImpl>, const String& version);
RefPtr<IDBBackingStore> m_backingStore;
int64_t m_id;
String m_name;
String m_version;
int64_t m_intVersion;
String m_identifier;
// This might not need to be a RefPtr since the factory's lifetime is that of the page group, but it's better to be conservitive than sorry.
RefPtr<IDBFactoryBackendImpl> m_factory;
typedef HashMap<String, RefPtr<IDBObjectStoreBackendImpl> > ObjectStoreMap;
ObjectStoreMap m_objectStores;
RefPtr<IDBTransactionCoordinator> m_transactionCoordinator;
RefPtr<IDBTransactionBackendImpl> m_runningVersionChangeTransaction;
typedef HashSet<IDBTransactionBackendImpl*> TransactionSet;
TransactionSet m_transactions;
class PendingSetVersionCall;
Deque<RefPtr<PendingSetVersionCall> > m_pendingSetVersionCalls;
class PendingOpenCall;
Deque<RefPtr<PendingOpenCall> > m_pendingOpenCalls;
class PendingOpenWithVersionCall;
Deque<RefPtr<PendingOpenWithVersionCall> > m_pendingOpenWithVersionCalls;
Deque<RefPtr<PendingOpenWithVersionCall> > m_pendingSecondHalfOpenWithVersionCalls;
class PendingDeleteCall;
Deque<RefPtr<PendingDeleteCall> > m_pendingDeleteCalls;
// FIXME: Eliminate the limbo state between openConnection() and registerFrontendCallbacks()
// that this counter tracks.
int32_t m_pendingConnectionCount;
typedef ListHashSet<RefPtr<IDBDatabaseCallbacks> > DatabaseCallbacksSet;
DatabaseCallbacksSet m_databaseCallbacksSet;
};
} // namespace WebCore
#endif
#endif // IDBDatabaseBackendImpl_h
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