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/*
* Copyright (C) 2012 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.
*/
#ifndef DatabaseManager_h
#define DatabaseManager_h
#include "modules/webdatabase/DatabaseBasicTypes.h"
#include "modules/webdatabase/DatabaseDetails.h"
#include "modules/webdatabase/DatabaseError.h"
#include "wtf/Assertions.h"
#include "wtf/HashMap.h"
#include "wtf/PassRefPtr.h"
#include "wtf/Threading.h"
namespace WebCore {
class AbstractDatabaseServer;
class Database;
class DatabaseBackendBase;
class DatabaseCallback;
class DatabaseContext;
class DatabaseSync;
class DatabaseTaskSynchronizer;
class SecurityOrigin;
class ScriptExecutionContext;
class DatabaseManager {
WTF_MAKE_NONCOPYABLE(DatabaseManager); WTF_MAKE_FAST_ALLOCATED;
public:
static DatabaseManager& manager();
// This gets a DatabaseContext for the specified ScriptExecutionContext.
// If one doesn't already exist, it will create a new one.
PassRefPtr<DatabaseContext> databaseContextFor(ScriptExecutionContext*);
// These 2 methods are for DatabaseContext (un)registration, and should only
// be called by the DatabaseContext constructor and destructor.
void registerDatabaseContext(DatabaseContext*);
void unregisterDatabaseContext(DatabaseContext*);
#if !ASSERT_DISABLED
void didConstructDatabaseContext();
void didDestructDatabaseContext();
#else
void didConstructDatabaseContext() { }
void didDestructDatabaseContext() { }
#endif
static ExceptionCode exceptionCodeForDatabaseError(DatabaseError);
PassRefPtr<Database> openDatabase(ScriptExecutionContext*, const String& name, const String& expectedVersion, const String& displayName, unsigned long estimatedSize, PassRefPtr<DatabaseCallback>, DatabaseError&);
PassRefPtr<DatabaseSync> openDatabaseSync(ScriptExecutionContext*, const String& name, const String& expectedVersion, const String& displayName, unsigned long estimatedSize, PassRefPtr<DatabaseCallback>, DatabaseError&);
bool hasOpenDatabases(ScriptExecutionContext*);
void stopDatabases(ScriptExecutionContext*, DatabaseTaskSynchronizer*);
String fullPathForDatabase(SecurityOrigin*, const String& name, bool createIfDoesNotExist = true);
void closeDatabasesImmediately(const String& originIdentifier, const String& name);
void interruptAllDatabasesForContext(ScriptExecutionContext*);
private:
DatabaseManager();
~DatabaseManager() { }
// This gets a DatabaseContext for the specified ScriptExecutionContext if
// it already exist previously. Otherwise, it returns 0.
PassRefPtr<DatabaseContext> existingDatabaseContextFor(ScriptExecutionContext*);
PassRefPtr<DatabaseBackendBase> openDatabaseBackend(ScriptExecutionContext*,
DatabaseType, const String& name, const String& expectedVersion, const String& displayName,
unsigned long estimatedSize, bool setVersionInNewDatabase, DatabaseError&, String& errorMessage);
static void logErrorMessage(ScriptExecutionContext*, const String& message);
AbstractDatabaseServer* m_server;
// Access to the following fields require locking m_contextMapLock:
typedef HashMap<ScriptExecutionContext*, DatabaseContext*> ContextMap;
ContextMap m_contextMap;
#if !ASSERT_DISABLED
int m_databaseContextRegisteredCount;
int m_databaseContextInstanceCount;
#endif
Mutex m_contextMapLock;
};
} // namespace WebCore
#endif // DatabaseManager_h