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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 IDBDatabaseBackend_h
#define IDBDatabaseBackend_h
#include "IDBDatabaseCallbacks.h"
#include "IDBDatabaseMetadata.h"
#include "IDBKeyRange.h"
#include "IDBPendingDeleteCall.h"
#include "IDBPendingOpenCall.h"
#include <stdint.h>
#include <wtf/Deque.h>
#include <wtf/HashMap.h>
#include <wtf/ListHashSet.h>
#if ENABLE(INDEXED_DATABASE)
namespace WebCore {
class IDBDatabase;
class IDBFactoryBackendInterface;
class IDBKey;
class IDBKeyPath;
class IDBServerConnection;
class IDBTransactionBackend;
class IDBTransactionCoordinator;
class SharedBuffer;
struct IDBDatabaseMetadata;
struct IDBIndexMetadata;
struct IDBObjectStoreMetadata;
typedef Vector<RefPtr<IDBKey>> IndexKeys;
typedef int ExceptionCode;
class IDBDatabaseBackend : public RefCounted<IDBDatabaseBackend> {
public:
WEBCORE_EXPORT static PassRefPtr<IDBDatabaseBackend> create(const String& name, const String& uniqueIdentifier, IDBFactoryBackendInterface*, IDBServerConnection&);
WEBCORE_EXPORT ~IDBDatabaseBackend();
IDBServerConnection& serverConnection() { return m_serverConnection.get(); }
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);
WEBCORE_EXPORT void openConnection(PassRefPtr<IDBCallbacks>, PassRefPtr<IDBDatabaseCallbacks>, int64_t transactionId, uint64_t version);
WEBCORE_EXPORT void deleteDatabase(PassRefPtr<IDBCallbacks>);
// IDBDatabaseBackend
void createObjectStore(int64_t transactionId, int64_t objectStoreId, const String& name, const IDBKeyPath&, bool autoIncrement);
void deleteObjectStore(int64_t transactionId, int64_t objectStoreId);
void createTransaction(int64_t transactionId, PassRefPtr<IDBDatabaseCallbacks>, const Vector<int64_t>& objectStoreIds, IndexedDB::TransactionMode);
void close(PassRefPtr<IDBDatabaseCallbacks>);
void commit(int64_t transactionId);
void abort(int64_t transactionId);
void abort(int64_t transactionId, PassRefPtr<IDBDatabaseError>);
void createIndex(int64_t transactionId, int64_t objectStoreId, int64_t indexId, const String& name, const IDBKeyPath&, bool unique, bool multiEntry);
void deleteIndex(int64_t transactionId, int64_t objectStoreId, int64_t indexId);
IDBTransactionCoordinator* transactionCoordinator() const { return m_transactionCoordinator.get(); }
void transactionStarted(IDBTransactionBackend*);
void transactionFinished(IDBTransactionBackend*);
void transactionFinishedAndCompleteFired(IDBTransactionBackend*);
void transactionFinishedAndAbortFired(IDBTransactionBackend*);
enum TaskType {
NormalTask = 0,
PreemptiveTask
};
enum PutMode {
AddOrUpdate,
AddOnly,
CursorUpdate
};
static const int64_t MinimumIndexId = 30;
void get(int64_t transactionId, int64_t objectStoreId, int64_t indexId, PassRefPtr<IDBKeyRange>, bool keyOnly, PassRefPtr<IDBCallbacks>);
void put(int64_t transactionId, int64_t objectStoreId, PassRefPtr<SharedBuffer> value, PassRefPtr<IDBKey>, PutMode, PassRefPtr<IDBCallbacks>, const Vector<int64_t>& indexIds, const Vector<IndexKeys>&);
void setIndexKeys(int64_t transactionId, int64_t objectStoreId, PassRefPtr<IDBKey> prpPrimaryKey, const Vector<int64_t>& indexIds, const Vector<IndexKeys>&);
void setIndexesReady(int64_t transactionId, int64_t objectStoreId, const Vector<int64_t>& indexIds);
void openCursor(int64_t transactionId, int64_t objectStoreId, int64_t indexId, PassRefPtr<IDBKeyRange>, IndexedDB::CursorDirection, bool keyOnly, TaskType, PassRefPtr<IDBCallbacks>);
void count(int64_t transactionId, int64_t objectStoreId, int64_t indexId, PassRefPtr<IDBKeyRange>, PassRefPtr<IDBCallbacks>);
void deleteRange(int64_t transactionId, int64_t objectStoreId, PassRefPtr<IDBKeyRange>, PassRefPtr<IDBCallbacks>);
void clearObjectStore(int64_t transactionId, int64_t objectStoreId, PassRefPtr<IDBCallbacks>);
const IDBDatabaseMetadata& metadata() const { return m_metadata; }
void setCurrentVersion(uint64_t version) { m_metadata.version = version; }
bool hasPendingSecondHalfOpen() { return m_pendingSecondHalfOpen.get(); }
void setPendingSecondHalfOpen(std::unique_ptr<IDBPendingOpenCall> pendingOpenCall) { m_pendingSecondHalfOpen = WTF::move(pendingOpenCall); }
IDBFactoryBackendInterface& factoryBackend() { return *m_factory; }
class VersionChangeOperation;
class VersionChangeAbortOperation;
private:
IDBDatabaseBackend(const String& name, const String& uniqueIdentifier, IDBFactoryBackendInterface*, IDBServerConnection&);
void openConnectionInternal(PassRefPtr<IDBCallbacks>, PassRefPtr<IDBDatabaseCallbacks>, int64_t transactionId, uint64_t version);
void openInternalAsync();
void didOpenInternalAsync(const IDBDatabaseMetadata&, bool success);
void runIntVersionChangeTransaction(PassRefPtr<IDBCallbacks>, PassRefPtr<IDBDatabaseCallbacks>, int64_t transactionId, int64_t requestedVersion);
size_t connectionCount();
void processPendingCalls();
void processPendingOpenCalls(bool success);
bool isDeleteDatabaseBlocked();
void deleteDatabaseAsync(PassRefPtr<IDBCallbacks>);
IDBDatabaseMetadata m_metadata;
String m_identifier;
RefPtr<IDBFactoryBackendInterface> m_factory;
Ref<IDBServerConnection> m_serverConnection;
std::unique_ptr<IDBTransactionCoordinator> m_transactionCoordinator;
RefPtr<IDBTransactionBackend> m_runningVersionChangeTransaction;
typedef HashMap<int64_t, IDBTransactionBackend*> TransactionMap;
TransactionMap m_transactions;
Deque<std::unique_ptr<IDBPendingOpenCall>> m_pendingOpenCalls;
std::unique_ptr<IDBPendingOpenCall> m_pendingSecondHalfOpen;
Deque<std::unique_ptr<IDBPendingDeleteCall>> m_pendingDeleteCalls;
HashSet<RefPtr<IDBCallbacks>> m_deleteCallbacksWaitingCompletion;
typedef ListHashSet<RefPtr<IDBDatabaseCallbacks>> DatabaseCallbacksSet;
DatabaseCallbacksSet m_databaseCallbacksSet;
bool m_closingConnection;
bool m_didOpenInternal;
};
} // namespace WebCore
#endif // ENABLE(INDEXED_DATABASE)
#endif // IDBDatabaseBackend_h
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