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/* Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.activiti.engine.impl.pvm.runtime;

import org.activiti.engine.impl.pvm.PvmException;
import org.activiti.engine.impl.pvm.delegate.ActivityBehavior;
import org.activiti.engine.impl.pvm.process.ActivityImpl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


/**
 * @author Tom Baeyens
 */
public class AtomicOperationActivityExecute implements AtomicOperation {
  
  private static Logger log = LoggerFactory.getLogger(AtomicOperationActivityExecute.class);

  public boolean isAsync(InterpretableExecution execution) {
    return false;
  }

  public void execute(InterpretableExecution execution) {
    ActivityImpl activity = (ActivityImpl) execution.getActivity();
    
    ActivityBehavior activityBehavior = activity.getActivityBehavior();
    if (activityBehavior==null) {
      throw new PvmException("no behavior specified in "+activity);
    }

    log.debug("{} executes {}: {}", execution, activity, activityBehavior.getClass().getName());
    
    try {
      activityBehavior.execute(execution);
    } catch (RuntimeException e) {
      throw e;
    } catch (Exception e) {
      throw new PvmException("couldn't execute activity <"+activity.getProperty("type")+" id=\""+activity.getId()+"\" ...>: "+e.getMessage(), e);
    }
  }
}