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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 
     35 #include "SQLError.h"
     36 #include "SQLResultSet.h"
     37 #include "SQLStatementCallback.h"
     38 #include "SQLStatementErrorCallback.h"
     39 #include "SQLValue.h"
     40 
     41 #include <wtf/PassRefPtr.h>
     42 #include <wtf/RefPtr.h>
     43 #include <wtf/Threading.h>
     44 #include <wtf/Vector.h>
     45 
     46 namespace WebCore {
     47 
     48 class Database;
     49 class SQLTransaction;
     50 class String;
     51 
     52 class SQLStatement : public ThreadSafeShared<SQLStatement> {
     53 public:
     54     static PassRefPtr<SQLStatement> create(const String&, const Vector<SQLValue>&, PassRefPtr<SQLStatementCallback>, PassRefPtr<SQLStatementErrorCallback>, bool readOnly);
     55 
     56     bool execute(Database*);
     57     bool lastExecutionFailedDueToQuota() const;
     58 
     59     bool hasStatementCallback() const { return m_statementCallback; }
     60     bool hasStatementErrorCallback() const { return m_statementErrorCallback; }
     61 
     62     void setDatabaseDeletedError();
     63     void setVersionMismatchedError();
     64 
     65     bool performCallback(SQLTransaction*);
     66 
     67     SQLError* sqlError() const { return m_error.get(); }
     68 private:
     69     SQLStatement(const String& statement, const Vector<SQLValue>& arguments, PassRefPtr<SQLStatementCallback> callback, PassRefPtr<SQLStatementErrorCallback> errorCallback, bool readOnly);
     70 
     71     void setFailureDueToQuota();
     72     void clearFailureDueToQuota();
     73 
     74     String m_statement;
     75     Vector<SQLValue> m_arguments;
     76     RefPtr<SQLStatementCallback> m_statementCallback;
     77     RefPtr<SQLStatementErrorCallback> m_statementErrorCallback;
     78 
     79     RefPtr<SQLError> m_error;
     80     RefPtr<SQLResultSet> m_resultSet;
     81 
     82     bool m_readOnly;
     83 };
     84 
     85 } // namespace WebCore
     86 
     87 #endif // ENABLE(DATABASE)
     88 
     89 #endif // SQLStatement_h
     90