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      1 /*
      2  * Copyright (C) 2009 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 #include "config.h"
     32 #include "SQLTransactionClient.h"
     33 
     34 #include "Database.h"
     35 #include "DatabaseObserver.h"
     36 #include "DatabaseThread.h"
     37 #include "Document.h"
     38 #include "SQLTransaction.h"
     39 #include <wtf/MainThread.h>
     40 
     41 namespace WebCore {
     42 
     43 class NotifyDatabaseChangedTask : public ScriptExecutionContext::Task {
     44 public:
     45     static PassOwnPtr<NotifyDatabaseChangedTask> create(Database *database)
     46     {
     47         return new NotifyDatabaseChangedTask(database);
     48     }
     49 
     50     virtual void performTask(ScriptExecutionContext*)
     51     {
     52         WebCore::DatabaseObserver::databaseModified(m_database.get());
     53     }
     54 
     55 private:
     56     NotifyDatabaseChangedTask(PassRefPtr<Database> database)
     57         : m_database(database)
     58     {
     59     }
     60 
     61     RefPtr<Database> m_database;
     62 };
     63 
     64 void SQLTransactionClient::didCommitTransaction(SQLTransaction* transaction)
     65 {
     66     ASSERT(currentThread() == transaction->database()->scriptExecutionContext()->databaseThread()->getThreadID());
     67     if (!transaction->isReadOnly()) {
     68         transaction->database()->scriptExecutionContext()->postTask(NotifyDatabaseChangedTask::create(transaction->database()));
     69     }
     70 }
     71 
     72 void SQLTransactionClient::didExecuteStatement(SQLTransaction* transaction)
     73 {
     74     // This method is called after executing every statement that changes the DB.
     75     // Chromium doesn't need to do anything at that point.
     76     ASSERT(currentThread() == transaction->database()->scriptExecutionContext()->databaseThread()->getThreadID());
     77 }
     78 
     79 bool SQLTransactionClient::didExceedQuota(SQLTransaction* transaction)
     80 {
     81     // Chromium does not allow users to manually change the quota for an origin (for now, at least).
     82     // Don't do anything.
     83     ASSERT(transaction->database()->scriptExecutionContext()->isContextThread());
     84     return false;
     85 }
     86 
     87 }
     88