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      1 /*
      2  * Copyright (C) 2007, 2013 Apple 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
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 #include "config.h"
     29 #include "modules/webdatabase/SQLStatement.h"
     30 
     31 #include "platform/Logging.h"
     32 #include "modules/webdatabase/sqlite/SQLiteDatabase.h"
     33 #include "modules/webdatabase/sqlite/SQLiteStatement.h"
     34 #include "modules/webdatabase/AbstractDatabaseServer.h"
     35 #include "modules/webdatabase/AbstractSQLStatementBackend.h"
     36 #include "modules/webdatabase/Database.h"
     37 #include "modules/webdatabase/DatabaseManager.h"
     38 #include "modules/webdatabase/SQLStatementCallback.h"
     39 #include "modules/webdatabase/SQLStatementErrorCallback.h"
     40 #include "modules/webdatabase/SQLTransaction.h"
     41 #include "wtf/text/CString.h"
     42 
     43 namespace WebCore {
     44 
     45 PassOwnPtr<SQLStatement> SQLStatement::create(Database* database,
     46     PassOwnPtr<SQLStatementCallback> callback, PassOwnPtr<SQLStatementErrorCallback> errorCallback)
     47 {
     48     return adoptPtr(new SQLStatement(database, callback, errorCallback));
     49 }
     50 
     51 SQLStatement::SQLStatement(Database* database, PassOwnPtr<SQLStatementCallback> callback,
     52     PassOwnPtr<SQLStatementErrorCallback> errorCallback)
     53     : m_statementCallbackWrapper(callback, database->executionContext())
     54     , m_statementErrorCallbackWrapper(errorCallback, database->executionContext())
     55 {
     56 }
     57 
     58 void SQLStatement::setBackend(AbstractSQLStatementBackend* backend)
     59 {
     60     m_backend = backend;
     61 }
     62 
     63 bool SQLStatement::hasCallback()
     64 {
     65     return m_statementCallbackWrapper.hasCallback();
     66 }
     67 
     68 bool SQLStatement::hasErrorCallback()
     69 {
     70     return m_statementErrorCallbackWrapper.hasCallback();
     71 }
     72 
     73 bool SQLStatement::performCallback(SQLTransaction* transaction)
     74 {
     75     ASSERT(transaction);
     76     ASSERT(m_backend);
     77 
     78     bool callbackError = false;
     79 
     80     OwnPtr<SQLStatementCallback> callback = m_statementCallbackWrapper.unwrap();
     81     OwnPtr<SQLStatementErrorCallback> errorCallback = m_statementErrorCallbackWrapper.unwrap();
     82     RefPtr<SQLError> error = m_backend->sqlError();
     83 
     84     // Call the appropriate statement callback and track if it resulted in an error,
     85     // because then we need to jump to the transaction error callback.
     86     if (error) {
     87         if (errorCallback)
     88             callbackError = errorCallback->handleEvent(transaction, error.get());
     89     } else if (callback) {
     90         RefPtr<SQLResultSet> resultSet = m_backend->sqlResultSet();
     91         callbackError = !callback->handleEvent(transaction, resultSet.get());
     92     }
     93 
     94     return callbackError;
     95 }
     96 
     97 } // namespace WebCore
     98