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      1 /*
      2  * Copyright (C) 2010 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef DatabaseSync_h
     32 #define DatabaseSync_h
     33 
     34 #if ENABLE(DATABASE)
     35 #include "AbstractDatabase.h"
     36 #include "ExceptionCode.h"
     37 #include "PlatformString.h"
     38 #include <wtf/Forward.h>
     39 #ifndef NDEBUG
     40 #include "SecurityOrigin.h"
     41 #endif
     42 
     43 namespace WebCore {
     44 
     45 class DatabaseCallback;
     46 class SQLTransactionSync;
     47 class SQLTransactionSyncCallback;
     48 class ScriptExecutionContext;
     49 class SecurityOrigin;
     50 
     51 // Instances of this class should be created and used only on the worker's context thread.
     52 class DatabaseSync : public AbstractDatabase {
     53 public:
     54     virtual ~DatabaseSync();
     55 
     56     static PassRefPtr<DatabaseSync> openDatabaseSync(ScriptExecutionContext*, const String& name, const String& expectedVersion,
     57                                                      const String& displayName, unsigned long estimatedSize, PassRefPtr<DatabaseCallback>, ExceptionCode&);
     58     void changeVersion(const String& oldVersion, const String& newVersion, PassRefPtr<SQLTransactionSyncCallback>, ExceptionCode&);
     59     void transaction(PassRefPtr<SQLTransactionSyncCallback>, ExceptionCode&);
     60     void readTransaction(PassRefPtr<SQLTransactionSyncCallback>, ExceptionCode&);
     61 
     62     virtual void markAsDeletedAndClose();
     63     virtual void closeImmediately();
     64 
     65 private:
     66     DatabaseSync(ScriptExecutionContext*, const String& name, const String& expectedVersion,
     67                  const String& displayName, unsigned long estimatedSize);
     68     void runTransaction(PassRefPtr<SQLTransactionSyncCallback>, bool readOnly, ExceptionCode&);
     69 };
     70 
     71 } // namespace WebCore
     72 
     73 #endif // ENABLE(DATABASE)
     74 
     75 #endif // DatabaseSync_h
     76