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      1 /*
      2  * Copyright (C) 2007 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 #ifndef SQLStatement_h
     29 #define SQLStatement_h
     30 
     31 #if ENABLE(DATABASE)
     32 
     33 #include "PlatformString.h"
     34 #include "SQLCallbackWrapper.h"
     35 #include "SQLResultSet.h"
     36 #include "SQLValue.h"
     37 #include <wtf/Forward.h>
     38 #include <wtf/Vector.h>
     39 
     40 namespace WebCore {
     41 
     42 class Database;
     43 class SQLError;
     44 class SQLStatementCallback;
     45 class SQLStatementErrorCallback;
     46 class SQLTransaction;
     47 
     48 class SQLStatement : public ThreadSafeRefCounted<SQLStatement> {
     49 public:
     50     static PassRefPtr<SQLStatement> create(Database*, const String&, const Vector<SQLValue>&, PassRefPtr<SQLStatementCallback>, PassRefPtr<SQLStatementErrorCallback>, int permissions);
     51 
     52     bool execute(Database*);
     53     bool lastExecutionFailedDueToQuota() const;
     54 
     55     bool hasStatementCallback() const { return m_statementCallbackWrapper.hasCallback(); }
     56     bool hasStatementErrorCallback() const { return m_statementErrorCallbackWrapper.hasCallback(); }
     57 
     58     void setDatabaseDeletedError();
     59     void setVersionMismatchedError();
     60 
     61     bool performCallback(SQLTransaction*);
     62 
     63     SQLError* sqlError() const { return m_error.get(); }
     64 private:
     65     SQLStatement(Database*, const String& statement, const Vector<SQLValue>& arguments, PassRefPtr<SQLStatementCallback>, PassRefPtr<SQLStatementErrorCallback>, int permissions);
     66 
     67     void setFailureDueToQuota();
     68     void clearFailureDueToQuota();
     69 
     70     String m_statement;
     71     Vector<SQLValue> m_arguments;
     72     SQLCallbackWrapper<SQLStatementCallback> m_statementCallbackWrapper;
     73     SQLCallbackWrapper<SQLStatementErrorCallback> m_statementErrorCallbackWrapper;
     74 
     75     RefPtr<SQLError> m_error;
     76     RefPtr<SQLResultSet> m_resultSet;
     77 
     78     int m_permissions;
     79 };
     80 
     81 } // namespace WebCore
     82 
     83 #endif // ENABLE(DATABASE)
     84 
     85 #endif // SQLStatement_h
     86