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/*
 * JBoss, Home of Professional Open Source
 * Copyright 2005, JBoss Inc., and individual contributors as indicated
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.ow2.bonita.runtime.tx;

import org.ow2.bonita.env.Transaction;
import org.ow2.bonita.facade.exception.BonitaInternalException;
import org.ow2.bonita.facade.exception.BonitaWrapperException;
import org.ow2.bonita.facade.exception.UnRollbackableException;
import org.ow2.bonita.services.impl.Interceptor;
import org.ow2.bonita.util.Command;
import org.ow2.bonita.util.EnvTool;

/**
 * calls setRollbackOnly on the transaction in the environment in case an
 * exception occurs during execution of the command.
 * 
 * @author Tom Baeyens
 */
public class StandardTransactionInterceptor extends Interceptor {

  @Override
  public  T execute(final Command command) {
    final Transaction standardTransaction = EnvTool.getTransaction();
    standardTransaction.begin();
    try {
      return next.execute(command);
    } catch (final UnRollbackableException e) {
      final Throwable originalCause = e.getCause();
      if (originalCause instanceof BonitaWrapperException) {
        final BonitaWrapperException wrapper = (BonitaWrapperException) originalCause;
        throw wrapper;
      }
      throw new BonitaWrapperException(originalCause);
    } catch (final BonitaInternalException e) {
      //pass here when using a command, for instance, WebExcecuteTask or REST mode 
      final Throwable cause = e.getCause();
      if (cause instanceof UnRollbackableException) {
        final Throwable originalCause = cause.getCause();
        if(originalCause instanceof RuntimeException) {
          throw (RuntimeException) originalCause;
        }
        throw new BonitaWrapperException(originalCause);
      }
      standardTransaction.setRollbackOnly();
      throw e;
    } catch (final RuntimeException e) {
      standardTransaction.setRollbackOnly();
      throw e;
    } finally {
      standardTransaction.complete();
    }
  }
}