third_party/WebKit/Source/modules/webdatabase/SQLStatementBackend.h

/*
 * 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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 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 */
#ifndef SQLStatementBackend_h
#define SQLStatementBackend_h

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

namespace blink {

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

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

  bool Execute(Database*);
  bool LastExecutionFailedDueToQuota() const;

  bool HasStatementCallback() const { return has_callback_; }
  bool HasStatementErrorCallback() const { return has_error_callback_; }

  void SetVersionMismatchedError(Database*);

  SQLStatement* GetFrontend();
  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> frontend_;
  String statement_;
  Vector<SQLValue> arguments_;
  bool has_callback_;
  bool has_error_callback_;

  std::unique_ptr<SQLErrorData> error_;
  Member<SQLResultSet> result_set_;

  int permissions_;
};

}  // namespace blink

#endif  // SQLStatementBackend_h