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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 #ifndef SQLStatementBackend_h
     29 #define SQLStatementBackend_h
     30 
     31 #include "modules/webdatabase/sqlite/SQLValue.h"
     32 #include "platform/heap/Handle.h"
     33 #include "wtf/Forward.h"
     34 #include "wtf/PassOwnPtr.h"
     35 #include "wtf/Vector.h"
     36 #include "wtf/text/WTFString.h"
     37 
     38 namespace blink {
     39 
     40 class Database;
     41 class SQLErrorData;
     42 class SQLResultSet;
     43 class SQLStatement;
     44 class SQLTransactionBackend;
     45 
     46 class SQLStatementBackend FINAL : public ThreadSafeRefCountedWillBeGarbageCollectedFinalized<SQLStatementBackend> {
     47 public:
     48     static PassRefPtrWillBeRawPtr<SQLStatementBackend> create(PassOwnPtrWillBeRawPtr<SQLStatement>,
     49         const String& sqlStatement, const Vector<SQLValue>& arguments, int permissions);
     50     void trace(Visitor*);
     51 
     52     bool execute(Database*);
     53     bool lastExecutionFailedDueToQuota() const;
     54 
     55     bool hasStatementCallback() const { return m_hasCallback; }
     56     bool hasStatementErrorCallback() const { return m_hasErrorCallback; }
     57 
     58     void setVersionMismatchedError(Database*);
     59 
     60     SQLStatement* frontend();
     61     SQLErrorData* sqlError() const;
     62     SQLResultSet* sqlResultSet() const;
     63 
     64 private:
     65     SQLStatementBackend(PassOwnPtrWillBeRawPtr<SQLStatement>, const String& statement,
     66         const Vector<SQLValue>& arguments, int permissions);
     67 
     68     void setFailureDueToQuota(Database*);
     69     void clearFailureDueToQuota();
     70 
     71     OwnPtrWillBeMember<SQLStatement> m_frontend;
     72     String m_statement;
     73     Vector<SQLValue> m_arguments;
     74     bool m_hasCallback;
     75     bool m_hasErrorCallback;
     76 
     77     OwnPtr<SQLErrorData> m_error;
     78     RefPtrWillBeMember<SQLResultSet> m_resultSet;
     79 
     80     int m_permissions;
     81 };
     82 
     83 } // namespace blink
     84 
     85 #endif // SQLStatementBackend_h
     86