/*
 * Copyright (C) 2007, 2013 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 */
#ifndef SQLStatement_h
#define SQLStatement_h

#include "modules/webdatabase/SQLResultSet.h"
#include "modules/webdatabase/sqlite/SQLValue.h"
#include "platform/wtf/Forward.h"
#include "platform/wtf/text/WTFString.h"

namespace blink {

class Database;
class SQLStatementBackend;
class SQLStatementCallback;
class SQLStatementErrorCallback;
class SQLTransaction;

class SQLStatement final : public GarbageCollected<SQLStatement> {
 public:
  static SQLStatement* Create(Database*,
                              SQLStatementCallback*,
                              SQLStatementErrorCallback*);
  DECLARE_TRACE();

  bool PerformCallback(SQLTransaction*);

  void SetBackend(SQLStatementBackend*);

  bool HasCallback();
  bool HasErrorCallback();

 private:
  SQLStatement(Database*, SQLStatementCallback*, SQLStatementErrorCallback*);

  // The SQLStatementBackend owns the SQLStatement. Hence, the backend is
  // guaranteed to be outlive the SQLStatement, and it is safe for us to refer
  // to the backend using a raw pointer here.
  Member<SQLStatementBackend> backend_;

  Member<SQLStatementCallback> statement_callback_;
  Member<SQLStatementErrorCallback> statement_error_callback_;
};

}  // namespace blink

#endif  // SQLStatement_h