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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 SQLStatement_h
29 #define SQLStatement_h
30 
31 #include "modules/webdatabase/sqlite/SQLValue.h"
32 #include "modules/webdatabase/SQLResultSet.h"
33 #include "wtf/Forward.h"
34 #include "wtf/text/WTFString.h"
35 
36 namespace blink {
37 
38 class Database;
39 class SQLError;
40 class SQLStatementBackend;
41 class SQLStatementCallback;
42 class SQLStatementErrorCallback;
43 class SQLTransaction;
44 
45 class SQLStatement FINAL : public NoBaseWillBeGarbageCollectedFinalized<SQLStatement> {
46 public:
47     static PassOwnPtrWillBeRawPtr<SQLStatement> create(Database*,
48         SQLStatementCallback*, SQLStatementErrorCallback*);
49     ~SQLStatement();
50     void trace(Visitor*);
51 
52     bool performCallback(SQLTransaction*);
53 
54     void setBackend(SQLStatementBackend*);
55 
56     bool hasCallback();
57     bool hasErrorCallback();
58 
59 private:
60     SQLStatement(Database*, SQLStatementCallback*, SQLStatementErrorCallback*);
61 
62     // The SQLStatementBackend owns the SQLStatement. Hence, the backend is
63     // guaranteed to be outlive the SQLStatement, and it is safe for us to refer
64     // to the backend using a raw pointer here.
65     RawPtrWillBeMember<SQLStatementBackend> m_backend;
66 
67     CrossThreadPersistentWillBeMember<SQLStatementCallback> m_statementCallback;
68     CrossThreadPersistentWillBeMember<SQLStatementErrorCallback> m_statementErrorCallback;
69 };
70 
71 } // namespace blink
72 
73 #endif // SQLStatement_h
74