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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 "modules/webdatabase/Database.h"
     32 #include "modules/webdatabase/DatabaseManager.h"
     33 #include "modules/webdatabase/SQLError.h"
     34 #include "modules/webdatabase/SQLStatementBackend.h"
     35 #include "modules/webdatabase/SQLStatementCallback.h"
     36 #include "modules/webdatabase/SQLStatementErrorCallback.h"
     37 #include "modules/webdatabase/SQLTransaction.h"
     38 #include "modules/webdatabase/sqlite/SQLiteDatabase.h"
     39 #include "modules/webdatabase/sqlite/SQLiteStatement.h"
     40 #include "platform/Logging.h"
     41 #include "wtf/text/CString.h"
     42 
     43 namespace blink {
     44 
     45 PassOwnPtrWillBeRawPtr<SQLStatement> SQLStatement::create(Database* database,
     46     SQLStatementCallback* callback, SQLStatementErrorCallback* errorCallback)
     47 {
     48     return adoptPtrWillBeNoop(new SQLStatement(database, callback, errorCallback));
     49 }
     50 
     51 SQLStatement::SQLStatement(Database* database, SQLStatementCallback* callback,
     52     SQLStatementErrorCallback* errorCallback)
     53     : m_statementCallback(callback)
     54     , m_statementErrorCallback(errorCallback)
     55 {
     56 }
     57 
     58 SQLStatement::~SQLStatement()
     59 {
     60 }
     61 
     62 void SQLStatement::trace(Visitor* visitor)
     63 {
     64     visitor->trace(m_backend);
     65     visitor->trace(m_statementCallback);
     66     visitor->trace(m_statementErrorCallback);
     67 }
     68 
     69 void SQLStatement::setBackend(SQLStatementBackend* backend)
     70 {
     71     m_backend = backend;
     72 }
     73 
     74 bool SQLStatement::hasCallback()
     75 {
     76     return m_statementCallback;
     77 }
     78 
     79 bool SQLStatement::hasErrorCallback()
     80 {
     81     return m_statementErrorCallback;
     82 }
     83 
     84 bool SQLStatement::performCallback(SQLTransaction* transaction)
     85 {
     86     ASSERT(transaction);
     87     ASSERT(m_backend);
     88 
     89     bool callbackError = false;
     90 
     91     SQLStatementCallback* callback = m_statementCallback.release();
     92     SQLStatementErrorCallback* errorCallback = m_statementErrorCallback.release();
     93     SQLErrorData* error = m_backend->sqlError();
     94 
     95     // Call the appropriate statement callback and track if it resulted in an error,
     96     // because then we need to jump to the transaction error callback.
     97     if (error) {
     98         if (errorCallback) {
     99             RefPtrWillBeRawPtr<SQLError> sqlError = SQLError::create(*error);
    100             callbackError = errorCallback->handleEvent(transaction, sqlError.get());
    101         }
    102     } else if (callback) {
    103         RefPtrWillBeRawPtr<SQLResultSet> resultSet = m_backend->sqlResultSet();
    104         callbackError = !callback->handleEvent(transaction, resultSet.get());
    105     }
    106 
    107     return callbackError;
    108 }
    109 
    110 } // namespace blink
    111