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/*
* Copyright (C) 2015 Apple 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 INC. ``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 INC. OR
* 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.
*/
#pragma once
#include "IDBDatabaseInfo.h"
#include "IDBKeyData.h"
#include "IDBTransactionInfo.h"
#include "IndexValueStore.h"
#include "ThreadSafeDataBuffer.h"
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
namespace WebCore {
namespace IDBServer {
class MemoryIDBBackingStore;
class MemoryIndex;
class MemoryObjectStore;
typedef HashMap<IDBKeyData, ThreadSafeDataBuffer, IDBKeyDataHash, IDBKeyDataHashTraits> KeyValueMap;
class MemoryBackingStoreTransaction {
WTF_MAKE_FAST_ALLOCATED;
public:
static std::unique_ptr<MemoryBackingStoreTransaction> create(MemoryIDBBackingStore&, const IDBTransactionInfo&);
MemoryBackingStoreTransaction(MemoryIDBBackingStore&, const IDBTransactionInfo&);
~MemoryBackingStoreTransaction();
bool isVersionChange() const { return m_info.mode() == IDBTransactionMode::Versionchange; }
bool isWriting() const { return m_info.mode() != IDBTransactionMode::Readonly; }
bool isAborting() const { return m_isAborting; }
const IDBDatabaseInfo& originalDatabaseInfo() const;
void addNewObjectStore(MemoryObjectStore&);
void addExistingObjectStore(MemoryObjectStore&);
void recordValueChanged(MemoryObjectStore&, const IDBKeyData&, ThreadSafeDataBuffer*);
void objectStoreDeleted(Ref<MemoryObjectStore>&&);
void objectStoreCleared(MemoryObjectStore&, std::unique_ptr<KeyValueMap>&&, std::unique_ptr<IDBKeyDataSet>&&);
void objectStoreRenamed(MemoryObjectStore&, const String& oldName);
void indexRenamed(MemoryIndex&, const String& oldName);
void indexCleared(MemoryIndex&, std::unique_ptr<IndexValueStore>&&);
void addNewIndex(MemoryIndex&);
void addExistingIndex(MemoryIndex&);
void indexDeleted(Ref<MemoryIndex>&&);
void abort();
void commit();
private:
void finish();
MemoryIDBBackingStore& m_backingStore;
IDBTransactionInfo m_info;
std::unique_ptr<IDBDatabaseInfo> m_originalDatabaseInfo;
bool m_inProgress { true };
bool m_isAborting { false };
HashSet<RefPtr<MemoryObjectStore>> m_objectStores;
HashSet<RefPtr<MemoryObjectStore>> m_versionChangeAddedObjectStores;
HashSet<RefPtr<MemoryIndex>> m_indexes;
HashSet<RefPtr<MemoryIndex>> m_versionChangeAddedIndexes;
HashMap<MemoryObjectStore*, uint64_t> m_originalKeyGenerators;
HashMap<String, RefPtr<MemoryObjectStore>> m_deletedObjectStores;
HashMap<String, RefPtr<MemoryIndex>> m_deletedIndexes;
HashMap<MemoryObjectStore*, std::unique_ptr<KeyValueMap>> m_originalValues;
HashMap<MemoryObjectStore*, std::unique_ptr<KeyValueMap>> m_clearedKeyValueMaps;
HashMap<MemoryObjectStore*, std::unique_ptr<IDBKeyDataSet>> m_clearedOrderedKeys;
HashMap<MemoryObjectStore*, String> m_originalObjectStoreNames;
HashMap<MemoryIndex*, String> m_originalIndexNames;
HashMap<MemoryIndex*, std::unique_ptr<IndexValueStore>> m_clearedIndexValueStores;
};
} // namespace IDBServer
} // namespace WebCore
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