| /* |
| * 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 |
| |
| #if ENABLE(INDEXED_DATABASE) |
| |
| #include "IDBKeyData.h" |
| #include "IDBObjectStoreInfo.h" |
| #include "MemoryIndex.h" |
| #include "MemoryObjectStoreCursor.h" |
| #include "ThreadSafeDataBuffer.h" |
| #include <wtf/HashMap.h> |
| #include <wtf/RefCounted.h> |
| |
| namespace PAL { |
| class SessionID; |
| } |
| |
| namespace WebCore { |
| |
| class IDBCursorInfo; |
| class IDBError; |
| class IDBGetAllResult; |
| class IDBKeyData; |
| class IDBValue; |
| |
| struct IDBKeyRangeData; |
| |
| namespace IndexedDB { |
| enum class GetAllType; |
| enum class IndexRecordType; |
| } |
| |
| namespace IDBServer { |
| |
| class IDBSerializationContext; |
| class MemoryBackingStoreTransaction; |
| |
| typedef HashMap<IDBKeyData, ThreadSafeDataBuffer, IDBKeyDataHash, IDBKeyDataHashTraits> KeyValueMap; |
| |
| class MemoryObjectStore : public RefCounted<MemoryObjectStore> { |
| public: |
| static Ref<MemoryObjectStore> create(PAL::SessionID, const IDBObjectStoreInfo&); |
| |
| ~MemoryObjectStore(); |
| |
| void writeTransactionStarted(MemoryBackingStoreTransaction&); |
| void writeTransactionFinished(MemoryBackingStoreTransaction&); |
| MemoryBackingStoreTransaction* writeTransaction() { return m_writeTransaction; } |
| |
| IDBError createIndex(MemoryBackingStoreTransaction&, const IDBIndexInfo&); |
| IDBError deleteIndex(MemoryBackingStoreTransaction&, uint64_t indexIdentifier); |
| void deleteAllIndexes(MemoryBackingStoreTransaction&); |
| void registerIndex(Ref<MemoryIndex>&&); |
| |
| bool containsRecord(const IDBKeyData&); |
| void deleteRecord(const IDBKeyData&); |
| void deleteRange(const IDBKeyRangeData&); |
| IDBError addRecord(MemoryBackingStoreTransaction&, const IDBKeyData&, const IDBValue&); |
| |
| uint64_t currentKeyGeneratorValue() const { return m_keyGeneratorValue; } |
| void setKeyGeneratorValue(uint64_t value) { m_keyGeneratorValue = value; } |
| |
| void clear(); |
| void replaceKeyValueStore(std::unique_ptr<KeyValueMap>&&, std::unique_ptr<IDBKeyDataSet>&&); |
| |
| ThreadSafeDataBuffer valueForKey(const IDBKeyData&) const; |
| ThreadSafeDataBuffer valueForKeyRange(const IDBKeyRangeData&) const; |
| IDBKeyData lowestKeyWithRecordInRange(const IDBKeyRangeData&) const; |
| IDBGetResult indexValueForKeyRange(uint64_t indexIdentifier, IndexedDB::IndexRecordType, const IDBKeyRangeData&) const; |
| uint64_t countForKeyRange(uint64_t indexIdentifier, const IDBKeyRangeData&) const; |
| |
| void getAllRecords(const IDBKeyRangeData&, Optional<uint32_t> count, IndexedDB::GetAllType, IDBGetAllResult&) const; |
| |
| const IDBObjectStoreInfo& info() const { return m_info; } |
| |
| MemoryObjectStoreCursor* maybeOpenCursor(const IDBCursorInfo&); |
| |
| IDBKeyDataSet* orderedKeys() { return m_orderedKeys.get(); } |
| |
| MemoryIndex* indexForIdentifier(uint64_t); |
| |
| void maybeRestoreDeletedIndex(Ref<MemoryIndex>&&); |
| |
| void rename(const String& newName) { m_info.rename(newName); } |
| void renameIndex(MemoryIndex&, const String& newName); |
| |
| private: |
| MemoryObjectStore(PAL::SessionID, const IDBObjectStoreInfo&); |
| |
| IDBKeyDataSet::iterator lowestIteratorInRange(const IDBKeyRangeData&, bool reverse) const; |
| |
| IDBError populateIndexWithExistingRecords(MemoryIndex&); |
| IDBError updateIndexesForPutRecord(const IDBKeyData&, const ThreadSafeDataBuffer& value); |
| void updateIndexesForDeleteRecord(const IDBKeyData& value); |
| void updateCursorsForPutRecord(IDBKeyDataSet::iterator); |
| void updateCursorsForDeleteRecord(const IDBKeyData&); |
| |
| RefPtr<MemoryIndex> takeIndexByIdentifier(uint64_t indexIdentifier); |
| |
| IDBObjectStoreInfo m_info; |
| |
| MemoryBackingStoreTransaction* m_writeTransaction { nullptr }; |
| uint64_t m_keyGeneratorValue { 1 }; |
| |
| std::unique_ptr<KeyValueMap> m_keyValueStore; |
| std::unique_ptr<IDBKeyDataSet> m_orderedKeys; |
| |
| void unregisterIndex(MemoryIndex&); |
| HashMap<uint64_t, RefPtr<MemoryIndex>> m_indexesByIdentifier; |
| HashMap<String, RefPtr<MemoryIndex>> m_indexesByName; |
| HashMap<IDBResourceIdentifier, std::unique_ptr<MemoryObjectStoreCursor>> m_cursors; |
| |
| Ref<IDBSerializationContext> m_serializationContext; |
| }; |
| |
| } // namespace IDBServer |
| } // namespace WebCore |
| |
| #endif // ENABLE(INDEXED_DATABASE) |