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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 "IDBMetadata.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 IDBTransactionBackendImpl;
class IDBTransactionCoordinator;
class IDBDatabaseBackendImpl : public IDBDatabaseBackendInterface {
public:
static PassRefPtr<IDBDatabaseBackendImpl> create(const String& name, IDBBackingStore* database, IDBFactoryBackendImpl*, const String& uniqueIdentifier);
virtual ~IDBDatabaseBackendImpl();
PassRefPtr<IDBBackingStore> backingStore() const;
static const int64_t InvalidId = 0;
int64_t id() const { return m_metadata.id; }
void addObjectStore(const IDBObjectStoreMetadata&, int64_t newMaxObjectStoreId);
void removeObjectStore(int64_t objectStoreId);
void addIndex(int64_t objectStoreId, const IDBIndexMetadata&, int64_t newMaxIndexId);
void removeIndex(int64_t objectStoreId, int64_t indexId);
void openConnection(PassRefPtr<IDBCallbacks>, PassRefPtr<IDBDatabaseCallbacks>, int64_t transactionId, int64_t version);
void deleteDatabase(PassRefPtr<IDBCallbacks>);
const IDBDatabaseMetadata& metadata() const { return m_metadata; }
// IDBDatabaseBackendInterface
virtual void createObjectStore(int64_t transactionId, int64_t objectStoreId, const String& name, const IDBKeyPath&, bool autoIncrement);
virtual void deleteObjectStore(int64_t transactionId, int64_t objectStoreId);
virtual void createTransaction(int64_t transactionId, PassRefPtr<IDBDatabaseCallbacks>, const Vector<int64_t>& objectStoreIds, unsigned short mode);
virtual void close(PassRefPtr<IDBDatabaseCallbacks>);
virtual void commit(int64_t transactionId);
virtual void abort(int64_t transactionId);
virtual void abort(int64_t transactionId, PassRefPtr<IDBDatabaseError>);
virtual void createIndex(int64_t transactionId, int64_t objectStoreId, int64_t indexId, const String& name, const IDBKeyPath&, bool unique, bool multiEntry);
virtual void deleteIndex(int64_t transactionId, int64_t objectStoreId, int64_t indexId);
IDBTransactionCoordinator* transactionCoordinator() const { return m_transactionCoordinator.get(); }
void transactionStarted(PassRefPtr<IDBTransactionBackendImpl>);
void transactionFinished(PassRefPtr<IDBTransactionBackendImpl>);
void transactionFinishedAndCompleteFired(PassRefPtr<IDBTransactionBackendImpl>);
void transactionFinishedAndAbortFired(PassRefPtr<IDBTransactionBackendImpl>);
virtual void get(int64_t transactionId, int64_t objectStoreId, int64_t indexId, PassRefPtr<IDBKeyRange>, bool keyOnly, PassRefPtr<IDBCallbacks>) OVERRIDE;
virtual void put(int64_t transactionId, int64_t objectStoreId, PassRefPtr<SharedBuffer> value, PassRefPtr<IDBKey>, PutMode, PassRefPtr<IDBCallbacks>, const Vector<int64_t>& indexIds, const Vector<IndexKeys>&) OVERRIDE;
virtual void setIndexKeys(int64_t transactionId, int64_t objectStoreId, PassRefPtr<IDBKey> prpPrimaryKey, const Vector<int64_t>& indexIds, const Vector<IndexKeys>&) OVERRIDE;
virtual void setIndexesReady(int64_t transactionId, int64_t objectStoreId, const Vector<int64_t>& indexIds) OVERRIDE;
virtual void openCursor(int64_t transactionId, int64_t objectStoreId, int64_t indexId, PassRefPtr<IDBKeyRange>, IndexedDB::CursorDirection, bool keyOnly, TaskType, PassRefPtr<IDBCallbacks>) OVERRIDE;
virtual void count(int64_t transactionId, int64_t objectStoreId, int64_t indexId, PassRefPtr<IDBKeyRange>, PassRefPtr<IDBCallbacks>) OVERRIDE;
virtual void deleteRange(int64_t transactionId, int64_t objectStoreId, PassRefPtr<IDBKeyRange>, PassRefPtr<IDBCallbacks>) OVERRIDE;
virtual void clear(int64_t transactionId, int64_t objectStoreId, PassRefPtr<IDBCallbacks>) OVERRIDE;
private:
IDBDatabaseBackendImpl(const String& name, IDBBackingStore* database, IDBFactoryBackendImpl*, const String& uniqueIdentifier);
bool openInternal();
void runIntVersionChangeTransaction(PassRefPtr<IDBCallbacks>, PassRefPtr<IDBDatabaseCallbacks>, int64_t transactionId, int64_t requestedVersion);
size_t connectionCount();
void processPendingCalls();
bool isDeleteDatabaseBlocked();
void deleteDatabaseFinal(PassRefPtr<IDBCallbacks>);
class VersionChangeOperation;
// When a "versionchange" transaction aborts, these restore the back-end object hierarchy.
class VersionChangeAbortOperation;
RefPtr<IDBBackingStore> m_backingStore;
IDBDatabaseMetadata m_metadata;
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;
OwnPtr<IDBTransactionCoordinator> m_transactionCoordinator;
RefPtr<IDBTransactionBackendImpl> m_runningVersionChangeTransaction;
typedef HashMap<int64_t, IDBTransactionBackendImpl*> TransactionMap;
TransactionMap m_transactions;
class PendingOpenCall;
Deque<OwnPtr<PendingOpenCall> > m_pendingOpenCalls;
OwnPtr<PendingOpenCall> m_pendingSecondHalfOpen;
class PendingDeleteCall;
Deque<OwnPtr<PendingDeleteCall> > m_pendingDeleteCalls;
typedef ListHashSet<RefPtr<IDBDatabaseCallbacks> > DatabaseCallbacksSet;
DatabaseCallbacksSet m_databaseCallbacksSet;
bool m_closingConnection;
};
} // namespace WebCore
#endif
#endif // IDBDatabaseBackendImpl_h
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