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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
* Copyright (C) 2013 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.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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 DatabaseBackendBase_h
#define DatabaseBackendBase_h
#if ENABLE(SQL_DATABASE)
#include "DatabaseBasicTypes.h"
#include "DatabaseDetails.h"
#include "DatabaseError.h"
#include "SQLiteDatabase.h"
#include <wtf/Forward.h>
#include <wtf/RefPtr.h>
#include <wtf/ThreadSafeRefCounted.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class DatabaseAuthorizer;
class DatabaseBackendContext;
class DatabaseBase;
class SecurityOrigin;
class DatabaseBackendBase : public ThreadSafeRefCounted<DatabaseBackendBase> {
public:
virtual ~DatabaseBackendBase();
virtual String version() const;
bool opened() const { return m_opened; }
bool isNew() const { return m_new; }
bool isSyncDatabase() const { return m_isSyncDatabase; }
virtual SecurityOrigin* securityOrigin() const;
virtual String stringIdentifier() const;
virtual String displayName() const;
virtual unsigned long estimatedSize() const;
virtual String fileName() const;
virtual DatabaseDetails details() const;
SQLiteDatabase& sqliteDatabase() { return m_sqliteDatabase; }
unsigned long long maximumSize() const;
void incrementalVacuumIfNeeded();
void interrupt();
bool isInterrupted();
void disableAuthorizer();
void enableAuthorizer();
void setAuthorizerReadOnly();
void setAuthorizerPermissions(int permissions);
bool lastActionChangedDatabase();
bool lastActionWasInsert();
void resetDeletes();
bool hadDeletes();
void resetAuthorizer();
virtual void markAsDeletedAndClose() = 0;
virtual void closeImmediately() = 0;
DatabaseBackendContext* databaseContext() const { return m_databaseContext.get(); }
void setFrontend(DatabaseBase* frontend) { m_frontend = frontend; }
protected:
friend class ChangeVersionWrapper;
friend class SQLStatementBackend;
friend class SQLStatementSync;
friend class SQLTransactionBackend;
friend class SQLTransactionBackendSync;
DatabaseBackendBase(PassRefPtr<DatabaseBackendContext>, const String& name, const String& expectedVersion,
const String& displayName, unsigned long estimatedSize, DatabaseType);
void closeDatabase();
virtual bool openAndVerifyVersion(bool setVersionInNewDatabase, DatabaseError&, String& errorMessage) = 0;
virtual bool performOpenAndVerify(bool shouldSetVersionInNewDatabase, DatabaseError&, String& errorMessage);
bool getVersionFromDatabase(String& version, bool shouldCacheVersion = true);
bool setVersionInDatabase(const String& version, bool shouldCacheVersion = true);
void setExpectedVersion(const String&);
const String& expectedVersion() const { return m_expectedVersion; }
String getCachedVersion()const;
void setCachedVersion(const String&);
bool getActualVersionForTransaction(String& version);
static const char* databaseInfoTableName();
#if !LOG_DISABLED || !ERROR_DISABLED
String databaseDebugName() const;
#endif
RefPtr<SecurityOrigin> m_contextThreadSecurityOrigin;
RefPtr<DatabaseBackendContext> m_databaseContext; // Associated with m_scriptExecutionContext.
String m_name;
String m_expectedVersion;
String m_displayName;
unsigned long m_estimatedSize;
String m_filename;
DatabaseBase* m_frontend;
private:
DatabaseGuid m_guid;
bool m_opened;
bool m_new;
const bool m_isSyncDatabase;
SQLiteDatabase m_sqliteDatabase;
RefPtr<DatabaseAuthorizer> m_databaseAuthorizer;
friend class DatabaseServer;
};
} // namespace WebCore
#endif // ENABLE(SQL_DATABASE)
#endif // DatabaseBackendBase_h
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