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/*
* Copyright (C) 2007, 2008 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 Database_h
#define Database_h
#if ENABLE(DATABASE)
#include "PlatformString.h"
#include "SQLiteDatabase.h"
#ifndef NDEBUG
#include "SecurityOrigin.h"
#endif
#include <wtf/Deque.h>
#include <wtf/Forward.h>
namespace WebCore {
class DatabaseAuthorizer;
class DatabaseCallback;
class DatabaseThread;
class ScriptExecutionContext;
class SecurityOrigin;
class SQLTransaction;
class SQLTransactionCallback;
class SQLTransactionClient;
class SQLTransactionCoordinator;
class SQLTransactionErrorCallback;
class VoidCallback;
typedef int ExceptionCode;
class Database : public ThreadSafeShared<Database> {
public:
static void setIsAvailable(bool);
static bool isAvailable();
~Database();
// Direct support for the DOM API
static PassRefPtr<Database> openDatabase(ScriptExecutionContext*, const String& name, const String& expectedVersion, const String& displayName,
unsigned long estimatedSize, PassRefPtr<DatabaseCallback>, ExceptionCode&);
String version() const;
void changeVersion(const String& oldVersion, const String& newVersion, PassRefPtr<SQLTransactionCallback>,
PassRefPtr<SQLTransactionErrorCallback>, PassRefPtr<VoidCallback> successCallback);
void transaction(PassRefPtr<SQLTransactionCallback>, PassRefPtr<SQLTransactionErrorCallback>,
PassRefPtr<VoidCallback> successCallback, bool readOnly);
// Internal engine support
static const String& databaseInfoTableName();
void disableAuthorizer();
void enableAuthorizer();
void setAuthorizerReadOnly();
bool lastActionChangedDatabase();
bool lastActionWasInsert();
void resetDeletes();
bool hadDeletes();
Vector<String> tableNames();
ScriptExecutionContext* scriptExecutionContext() const { return m_scriptExecutionContext.get(); }
SecurityOrigin* securityOrigin() const;
SQLiteDatabase& sqliteDatabase() { return m_sqliteDatabase; }
String stringIdentifier() const;
String displayName() const;
unsigned long estimatedSize() const;
String fileName() const;
bool getVersionFromDatabase(String&);
bool setVersionInDatabase(const String&);
void setExpectedVersion(const String&);
bool versionMatchesExpected() const;
void markAsDeletedAndClose();
bool deleted() const { return m_deleted; }
enum ClosePolicy { DoNotRemoveDatabaseFromContext, RemoveDatabaseFromContext };
void close(ClosePolicy);
bool opened() const { return m_opened; }
void stop();
bool stopped() const { return m_stopped; }
bool isNew() const { return m_new; }
unsigned long long databaseSize() const;
unsigned long long maximumSize() const;
// Called from DatabaseThread, must be prepared to work on the background thread
void resetAuthorizer();
void performPolicyChecks();
bool performOpenAndVerify(ExceptionCode&);
void inProgressTransactionCompleted();
void scheduleTransactionCallback(SQLTransaction*);
void scheduleTransactionStep(SQLTransaction*, bool immediately = false);
Vector<String> performGetTableNames();
void performCreationCallback();
SQLTransactionClient* transactionClient() const;
SQLTransactionCoordinator* transactionCoordinator() const;
void incrementalVacuumIfNeeded();
private:
Database(ScriptExecutionContext*, const String& name, const String& expectedVersion,
const String& displayName, unsigned long estimatedSize, PassRefPtr<DatabaseCallback>);
bool openAndVerifyVersion(ExceptionCode&);
void scheduleTransaction();
Deque<RefPtr<SQLTransaction> > m_transactionQueue;
Mutex m_transactionInProgressMutex;
bool m_transactionInProgress;
bool m_isTransactionQueueEnabled;
static void deliverPendingCallback(void*);
RefPtr<ScriptExecutionContext> m_scriptExecutionContext;
RefPtr<SecurityOrigin> m_contextThreadSecurityOrigin;
RefPtr<SecurityOrigin> m_databaseThreadSecurityOrigin;
String m_name;
int m_guid;
String m_expectedVersion;
String m_displayName;
unsigned long m_estimatedSize;
String m_filename;
bool m_deleted;
bool m_stopped;
bool m_opened;
bool m_new;
SQLiteDatabase m_sqliteDatabase;
RefPtr<DatabaseAuthorizer> m_databaseAuthorizer;
RefPtr<DatabaseCallback> m_creationCallback;
#ifndef NDEBUG
String databaseDebugName() const { return m_contextThreadSecurityOrigin->toString() + "::" + m_name; }
#endif
};
} // namespace WebCore
#endif // ENABLE(DATABASE)
#endif // Database_h
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