/*
 * 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
 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef SQLStatementBackend_h
#define SQLStatementBackend_h

#include "modules/webdatabase/sqlite/SQLValue.h"
#include "platform/heap/Handle.h"
#include "wtf/Forward.h"
#include "wtf/Vector.h"
#include "wtf/text/WTFString.h"
#include <memory>

namespace blink {

class Database;
class SQLErrorData;
class SQLResultSet;
class SQLStatement;

class SQLStatementBackend final
    : public GarbageCollectedFinalized<SQLStatementBackend> {
 public:
  static SQLStatementBackend* create(SQLStatement*,
                                     const String& sqlStatement,
                                     const Vector<SQLValue>& arguments,
                                     int permissions);
  DECLARE_TRACE();

  bool execute(Database*);
  bool lastExecutionFailedDueToQuota() const;

  bool hasStatementCallback() const { return m_hasCallback; }
  bool hasStatementErrorCallback() const { return m_hasErrorCallback; }

  void setVersionMismatchedError(Database*);

  SQLStatement* frontend();
  SQLErrorData* sqlError() const;
  SQLResultSet* sqlResultSet() const;

 private:
  SQLStatementBackend(SQLStatement*,
                      const String& statement,
                      const Vector<SQLValue>& arguments,
                      int permissions);

  void setFailureDueToQuota(Database*);
  void clearFailureDueToQuota();

  Member<SQLStatement> m_frontend;
  String m_statement;
  Vector<SQLValue> m_arguments;
  bool m_hasCallback;
  bool m_hasErrorCallback;

  std::unique_ptr<SQLErrorData> m_error;
  Member<SQLResultSet> m_resultSet;

  int m_permissions;
};

}  // namespace blink

#endif  // SQLStatementBackend_h