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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 "IDBIndexInfo.h"
#include "IDBKeyData.h"
#include "IDBResourceIdentifier.h"
#include <wtf/CheckedPtr.h>
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/WeakHashSet.h>
namespace WebCore {
class IDBCursorInfo;
class IDBError;
class IDBGetAllResult;
class IDBGetResult;
class IDBKeyData;
class IndexKey;
class ThreadSafeDataBuffer;
struct IDBKeyRangeData;
namespace IndexedDB {
enum class GetAllType : bool;
enum class IndexRecordType : bool;
}
namespace IDBServer {
class IndexValueStore;
class MemoryBackingStoreTransaction;
class MemoryIndexCursor;
class MemoryObjectStore;
class MemoryIndex : public RefCounted<MemoryIndex>, public CanMakeThreadSafeCheckedPtr<MemoryIndex> {
WTF_DEPRECATED_MAKE_FAST_ALLOCATED(MemoryIndex);
WTF_OVERRIDE_DELETE_FOR_CHECKED_PTR(MemoryIndex);
public:
static Ref<MemoryIndex> create(const IDBIndexInfo&, MemoryObjectStore&);
~MemoryIndex();
const IDBIndexInfo& info() const { return m_info; }
void rename(const String& newName) { m_info.rename(newName); }
IDBGetResult getResultForKeyRange(IndexedDB::IndexRecordType, const IDBKeyRangeData&) const;
uint64_t countForKeyRange(const IDBKeyRangeData&);
void getAllRecords(const IDBKeyRangeData&, std::optional<uint32_t> count, IndexedDB::GetAllType, IDBGetAllResult&) const;
IDBError putIndexKey(const IDBKeyData&, const IndexKey&);
void removeEntriesWithValueKey(const IDBKeyData&);
void removeRecord(const IDBKeyData&, const IndexKey&);
void objectStoreCleared();
MemoryIndexCursor* maybeOpenCursor(const IDBCursorInfo&, MemoryBackingStoreTransaction&);
IndexValueStore* valueStore() { return m_records.get(); }
MemoryObjectStore* objectStore();
RefPtr<MemoryObjectStore> protectedObjectStore();
void cursorDidBecomeClean(MemoryIndexCursor&);
void cursorDidBecomeDirty(MemoryIndexCursor&);
void notifyCursorsOfValueChange(const IDBKeyData& indexKey, const IDBKeyData& primaryKey);
void transactionFinished(MemoryBackingStoreTransaction&);
void writeTransactionStarted(MemoryBackingStoreTransaction&);
void writeTransactionFinished(MemoryBackingStoreTransaction&);
void transactionAborted(MemoryBackingStoreTransaction&);
private:
MemoryIndex(const IDBIndexInfo&, MemoryObjectStore&);
uint64_t recordCountForKey(const IDBKeyData&) const;
void notifyCursorsOfAllRecordsChanged();
IDBError addIndexRecord(const IDBKeyData& indexKey, const IDBKeyData& valueKey);
void removeIndexRecord(const IDBKeyData& indexKey, const IDBKeyData& valueKey);
void removeIndexRecord(const IDBKeyData& indexKey);
IDBIndexInfo m_info;
WeakPtr<MemoryObjectStore> m_objectStore;
WeakPtr<MemoryBackingStoreTransaction> m_writeTransaction;
HashMap<IDBKeyData, Vector<IDBKeyData>, IDBKeyDataHash, IDBKeyDataHashTraits> m_transactionModifiedRecords;
std::unique_ptr<IndexValueStore> m_records;
HashMap<IDBResourceIdentifier, RefPtr<MemoryIndexCursor>> m_cursors;
WeakHashSet<MemoryIndexCursor> m_cleanCursors;
};
} // namespace IDBServer
} // namespace WebCore
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