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-/*
- * Copyright (C) 2011 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 IDBBackingStoreLevelDB_h
-#define IDBBackingStoreLevelDB_h
-
-#if ENABLE(INDEXED_DATABASE) && USE(LEVELDB)
-
-#include "IDBBackingStoreCursorLevelDB.h"
-#include "IDBBackingStoreTransactionLevelDB.h"
-#include "IDBDatabaseMetadata.h"
-#include "IDBKey.h"
-#include "IDBRecordIdentifier.h"
-#include "IndexedDB.h"
-#include "LevelDBIterator.h"
-#include "LevelDBTransaction.h"
-#include <functional>
-#include <wtf/OwnPtr.h>
-#include <wtf/RefCounted.h>
-#include <wtf/WeakPtr.h>
-
-namespace WebCore {
-
-class LevelDBComparator;
-class LevelDBDatabase;
-class LevelDBTransaction;
-class IDBIndexWriterLevelDB;
-class IDBKey;
-class IDBKeyRange;
-class IDBTransactionBackend;
-class SecurityOrigin;
-class SharedBuffer;
-
-class LevelDBFactory {
-public:
- virtual ~LevelDBFactory() { }
- virtual PassOwnPtr<LevelDBDatabase> openLevelDB(const String& fileName, const LevelDBComparator*) = 0;
- virtual bool destroyLevelDB(const String& fileName) = 0;
-};
-
-class IDBBackingStoreLevelDB : public RefCounted<IDBBackingStoreLevelDB> {
-public:
- class Transaction;
-
- virtual ~IDBBackingStoreLevelDB();
- static PassRefPtr<IDBBackingStoreLevelDB> open(const SecurityOrigin&, const String& pathBase, const String& fileIdentifier);
- static PassRefPtr<IDBBackingStoreLevelDB> open(const SecurityOrigin&, const String& pathBase, const String& fileIdentifier, LevelDBFactory*);
- static PassRefPtr<IDBBackingStoreLevelDB> openInMemory(const String& identifier);
- static PassRefPtr<IDBBackingStoreLevelDB> openInMemory(const String& identifier, LevelDBFactory*);
- WeakPtr<IDBBackingStoreLevelDB> createWeakPtr() { return m_weakFactory.createWeakPtr(); }
-
- void establishBackingStoreTransaction(int64_t transactionID);
-
- Vector<String> getDatabaseNames();
-
- // New-style asynchronous callbacks
- void getOrEstablishIDBDatabaseMetadata(const String& name, std::function<void (const IDBDatabaseMetadata&, bool success)> callbackFunction);
- void deleteDatabase(const String& name, std::function<void (bool success)> successCallback);
-
- // Old-style synchronous callbacks
- bool updateIDBDatabaseVersion(IDBBackingStoreTransactionLevelDB&, int64_t rowId, uint64_t version);
-
- bool createObjectStore(IDBBackingStoreTransactionLevelDB&, int64_t databaseId, int64_t objectStoreId, const String& name, const IDBKeyPath&, bool autoIncrement);
- bool deleteObjectStore(IDBBackingStoreTransactionLevelDB&, int64_t databaseId, int64_t objectStoreId) WARN_UNUSED_RETURN;
-
- bool getRecord(IDBBackingStoreTransactionLevelDB&, int64_t databaseId, int64_t objectStoreId, const IDBKey&, Vector<char>& record) WARN_UNUSED_RETURN;
- bool putRecord(IDBBackingStoreTransactionLevelDB&, int64_t databaseId, int64_t objectStoreId, const IDBKey&, PassRefPtr<SharedBuffer> value, IDBRecordIdentifier*) WARN_UNUSED_RETURN;
- bool clearObjectStore(IDBBackingStoreTransactionLevelDB&, int64_t databaseId, int64_t objectStoreId) WARN_UNUSED_RETURN;
- bool deleteRecord(IDBBackingStoreTransactionLevelDB&, int64_t databaseId, int64_t objectStoreId, const IDBRecordIdentifier&) WARN_UNUSED_RETURN;
- bool getKeyGeneratorCurrentNumber(IDBBackingStoreTransactionLevelDB&, int64_t databaseId, int64_t objectStoreId, int64_t& currentNumber) WARN_UNUSED_RETURN;
- bool maybeUpdateKeyGeneratorCurrentNumber(IDBBackingStoreTransactionLevelDB&, int64_t databaseId, int64_t objectStoreId, int64_t newState, bool checkCurrent) WARN_UNUSED_RETURN;
- bool keyExistsInObjectStore(IDBBackingStoreTransactionLevelDB&, int64_t databaseId, int64_t objectStoreId, const IDBKey&, RefPtr<IDBRecordIdentifier>& foundIDBRecordIdentifier) WARN_UNUSED_RETURN;
-
- bool createIndex(IDBBackingStoreTransactionLevelDB&, int64_t databaseId, int64_t objectStoreId, int64_t indexId, const String& name, const IDBKeyPath&, bool isUnique, bool isMultiEntry) WARN_UNUSED_RETURN;
- bool deleteIndex(IDBBackingStoreTransactionLevelDB&, int64_t databaseId, int64_t objectStoreId, int64_t indexId) WARN_UNUSED_RETURN;
- bool putIndexDataForRecord(IDBBackingStoreTransactionLevelDB&, int64_t databaseId, int64_t objectStoreId, int64_t indexId, const IDBKey&, const IDBRecordIdentifier*) WARN_UNUSED_RETURN;
- bool getPrimaryKeyViaIndex(IDBBackingStoreTransactionLevelDB&, int64_t databaseId, int64_t objectStoreId, int64_t indexId, const IDBKey&, RefPtr<IDBKey>& primaryKey) WARN_UNUSED_RETURN;
- bool keyExistsInIndex(IDBBackingStoreTransactionLevelDB&, int64_t databaseId, int64_t objectStoreId, int64_t indexId, const IDBKey& indexKey, RefPtr<IDBKey>& foundPrimaryKey, bool& exists) WARN_UNUSED_RETURN;
-
- virtual PassRefPtr<IDBBackingStoreCursorLevelDB> openObjectStoreKeyCursor(int64_t cursorID, IDBBackingStoreTransactionLevelDB&, int64_t databaseID, int64_t objectStoreId, const IDBKeyRange*, IndexedDB::CursorDirection);
- virtual PassRefPtr<IDBBackingStoreCursorLevelDB> openObjectStoreCursor(int64_t cursorID, IDBBackingStoreTransactionLevelDB&, int64_t databaseID, int64_t objectStoreId, const IDBKeyRange*, IndexedDB::CursorDirection);
- virtual PassRefPtr<IDBBackingStoreCursorLevelDB> openIndexKeyCursor(int64_t cursorID, IDBBackingStoreTransactionLevelDB&, int64_t databaseID, int64_t objectStoreId, int64_t indexId, const IDBKeyRange*, IndexedDB::CursorDirection);
- virtual PassRefPtr<IDBBackingStoreCursorLevelDB> openIndexCursor(int64_t cursorID, IDBBackingStoreTransactionLevelDB&, int64_t databaseID, int64_t objectStoreId, int64_t indexId, const IDBKeyRange*, IndexedDB::CursorDirection);
-
- bool makeIndexWriters(int64_t transactionID, int64_t databaseId, const IDBObjectStoreMetadata&, IDBKey& primaryKey, bool keyWasGenerated, const Vector<int64_t>& indexIds, const Vector<Vector<RefPtr<IDBKey>>>&, Vector<RefPtr<IDBIndexWriterLevelDB>>& indexWriters, String* errorMessage, bool& completed) WARN_UNUSED_RETURN;
-
- virtual PassRefPtr<IDBKey> generateKey(IDBTransactionBackend&, int64_t databaseId, int64_t objectStoreId);
- bool updateKeyGenerator(IDBTransactionBackend&, int64_t databaseId, int64_t objectStoreId, const IDBKey&, bool checkCurrent);
-
- LevelDBDatabase* levelDBDatabase() { return m_db.get(); }
-
- static int compareIndexKeys(const LevelDBSlice&, const LevelDBSlice&);
-
- void removeBackingStoreTransaction(IDBBackingStoreTransactionLevelDB*);
-
-private:
- IDBBackingStoreLevelDB(const String& identifier, PassOwnPtr<LevelDBDatabase>, PassOwnPtr<LevelDBComparator>);
- static PassRefPtr<IDBBackingStoreLevelDB> create(const String& identifier, PassOwnPtr<LevelDBDatabase>, PassOwnPtr<LevelDBComparator>);
-
- // FIXME: LevelDB needs to support uint64_t as the version type.
- bool createIDBDatabaseMetaData(IDBDatabaseMetadata&);
- bool getIDBDatabaseMetaData(const String& name, IDBDatabaseMetadata*, bool& success) WARN_UNUSED_RETURN;
- bool getObjectStores(int64_t databaseId, IDBDatabaseMetadata::ObjectStoreMap* objectStores) WARN_UNUSED_RETURN;
-
- bool findKeyInIndex(IDBBackingStoreTransactionLevelDB&, int64_t databaseId, int64_t objectStoreId, int64_t indexId, const IDBKey&, Vector<char>& foundEncodedPrimaryKey, bool& found);
- bool getIndexes(int64_t databaseId, int64_t objectStoreId, IDBObjectStoreMetadata::IndexMap*) WARN_UNUSED_RETURN;
-
- String m_identifier;
-
- OwnPtr<LevelDBDatabase> m_db;
- OwnPtr<LevelDBComparator> m_comparator;
- WeakPtrFactory<IDBBackingStoreLevelDB> m_weakFactory;
-
- HashMap<int64_t, RefPtr<IDBBackingStoreTransactionLevelDB>> m_backingStoreTransactions;
-};
-
-} // namespace WebCore
-
-#endif // ENABLE(INDEXED_DATABASE) && USE(LEVELDB)
-
-#endif // IDBBackingStoreLevelDB_h