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 
hasStatementCallback()55     bool hasStatementCallback() const { return m_statementCallbackWrapper.hasCallback(); }
hasStatementErrorCallback()56     bool hasStatementErrorCallback() const { return m_statementErrorCallbackWrapper.hasCallback(); }
57 
58     void setDatabaseDeletedError();
59     void setVersionMismatchedError();
60 
61     bool performCallback(SQLTransaction*);
62 
sqlError()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