Package br.gov.frameworkdemoiselle.transaction

Source Code of br.gov.frameworkdemoiselle.transaction.JDBCTransaction

/*
* Demoiselle Framework
* Copyright (C) 2010 SERPRO
* ----------------------------------------------------------------------------
* This file is part of Demoiselle Framework.
*
* Demoiselle Framework is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License version 3
* as published by the Free Software Foundation.
*
* 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 Lesser General Public License version 3
* along with this program; if not,  see <http://www.gnu.org/licenses/>
* or write to the Free Software Foundation, Inc., 51 Franklin Street,
* Fifth Floor, Boston, MA  02110-1301, USA.
* ----------------------------------------------------------------------------
* Este arquivo é parte do Framework Demoiselle.
*
* O Framework Demoiselle é um software livre; você pode redistribuí-lo e/ou
* modificá-lo dentro dos termos da GNU LGPL versão 3 como publicada pela Fundação
* do Software Livre (FSF).
*
* Este programa é distribuído na esperança que possa ser útil, mas SEM NENHUMA
* GARANTIA; sem uma garantia implícita de ADEQUAÇÃO a qualquer MERCADO ou
* APLICAÇÃO EM PARTICULAR. Veja a Licença Pública Geral GNU/LGPL em português
* para maiores detalhes.
*
* Você deve ter recebido uma cópia da GNU LGPL versão 3, sob o título
* "LICENCA.txt", junto com esse programa. Se não, acesse <http://www.gnu.org/licenses/>
* ou escreva para a Fundação do Software Livre (FSF) Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02111-1301, USA.
*/
package br.gov.frameworkdemoiselle.transaction;

import static br.gov.frameworkdemoiselle.annotation.Priority.L2_PRIORITY;

import java.sql.Connection;
import java.util.Collection;

import br.gov.frameworkdemoiselle.DemoiselleException;
import br.gov.frameworkdemoiselle.annotation.Priority;
import br.gov.frameworkdemoiselle.internal.producer.ConnectionProducer;
import br.gov.frameworkdemoiselle.internal.producer.ConnectionProducer.Status;
import br.gov.frameworkdemoiselle.util.Beans;

/**
* Represents the strategy destinated to manage JDBC transactions.
*
* @author SERPRO
* @see Transaction
*/
@Priority(L2_PRIORITY)
public class JDBCTransaction implements Transaction {

  private static final long serialVersionUID = 1L;

  private ConnectionProducer producer;

  private ConnectionProducer getProducer() {
    if (producer == null) {
      producer = Beans.getReference(ConnectionProducer.class);
    }

    return producer;
  }

  private Collection<Connection> getDelegate() {
    return getProducer().getCache().values();
  }

  @Override
  public void begin() {
    Status status;
    for (Connection connection : getDelegate()) {
      status = getProducer().getStatus(connection);
      status.setActive(true);
    }
  }

  /**
   * @throws DemoiselleException
   */
  @Override
  public void commit() {
    Status status;

    for (Connection connection : getDelegate()) {
      try {
        connection.commit();
        status = getProducer().getStatus(connection);
        status.setActive(false);
      } catch (Exception cause) {
        throw new DemoiselleException(cause);
      }
    }
  }

  /**
   * @throws DemoiselleException
   */
  @Override
  public void rollback() {
    Status status;

    for (Connection connection : getDelegate()) {
      try {
        connection.rollback();
        status = getProducer().getStatus(connection);
        status.setActive(false);
      } catch (Exception cause) {
        throw new DemoiselleException(cause);
      }
    }
  }

  @Override
  public void setRollbackOnly() {
    Status status;
    for (Connection connection : getDelegate()) {
      status = getProducer().getStatus(connection);
      status.setRollbackOnly(true);
    }
  }

  @Override
  public boolean isActive() {
    Status status;
    boolean result = true;

    for (Connection connection : getDelegate()) {
      status = getProducer().getStatus(connection);
      result = result && status.isActive();
    }

    return result;
  }

  @Override
  public boolean isMarkedRollback() {
    Status status;
    boolean result = true;

    for (Connection connection : getDelegate()) {
      status = getProducer().getStatus(connection);
      result = result && status.isMarkedRollback();
    }

    return result;
  }
}
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