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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.cmd;

import java.io.Serializable;

import org.activiti.engine.ActivitiIllegalArgumentException;
import org.activiti.engine.ActivitiObjectNotFoundException;
import org.activiti.engine.impl.interceptor.Command;
import org.activiti.engine.impl.interceptor.CommandContext;
import org.activiti.engine.impl.persistence.entity.ExecutionEntity;
import org.activiti.engine.runtime.ProcessInstance;

/**

 */
public class DeleteProcessInstanceCmd implements Command, Serializable {

  private static final long serialVersionUID = 1L;
  protected String processInstanceId;
  protected String deleteReason;

  public DeleteProcessInstanceCmd(String processInstanceId, String deleteReason) {
    this.processInstanceId = processInstanceId;
    this.deleteReason = deleteReason;
  }

  public Void execute(CommandContext commandContext) {
    if (processInstanceId == null) {
      throw new ActivitiIllegalArgumentException("processInstanceId is null");
    }

    ExecutionEntity processInstanceEntity = commandContext.getExecutionEntityManager().findById(processInstanceId);
    
    if (processInstanceEntity == null) {
      throw new ActivitiObjectNotFoundException("No process instance found for id '" + processInstanceId + "'", ProcessInstance.class);
    }

    commandContext.getExecutionEntityManager().deleteProcessInstance(processInstanceEntity.getProcessInstanceId(), deleteReason, false);

    return null;
  }

}