~drizzle-trunk/drizzle/development

/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-

 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:

 *

 *  Copyright (C) 2008 Sun Microsystems, Inc.

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; version 2 of the License.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#pragma once

#include <vector>

#include <drizzled/common_fwd.h>

namespace drizzled {

class TransactionContext

{

public:

  TransactionContext() :

    no_2pc(false),

    resource_contexts(),

    modified_non_trans_data(false)

  {}

  void reset() { no_2pc= false; modified_non_trans_data= false; resource_contexts.clear();}

  typedef std::vector<ResourceContext *> ResourceContexts;

  void setResourceContexts(ResourceContexts &new_contexts)

  {

    resource_contexts= new_contexts;

  }

  ResourceContexts &getResourceContexts()

  {

    return resource_contexts;

  }

  /** Register a resource context in this transaction context */

  void registerResource(ResourceContext *resource)

  {

    resource_contexts.push_back(resource);

  }

  /**

   * Marks that this transaction has modified state

   * of some non-transactional data.

   */

  void markModifiedNonTransData()

  {

    modified_non_trans_data= true;

  }

  /**

   * Returns true if the transaction has modified

   * state of some non-transactional data.

   */

  bool hasModifiedNonTransData() const

  {

    return modified_non_trans_data;

  }

  /* true is not all entries in the resource contexts support 2pc */

  bool no_2pc;

private:

  /** Resource that registered in this transaction */

  ResourceContexts resource_contexts;

  /** Whether this transaction has changed non-transaction data state */

  bool modified_non_trans_data;

};

} /* namespace drizzled */