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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 org.activiti.engine.ActivitiIllegalArgumentException;
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.Job;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.Serializable;

/**

 */
public class LockExclusiveJobCmd implements Command, Serializable {

  private static final long serialVersionUID = 1L;

  private static Logger log = LoggerFactory.getLogger(LockExclusiveJobCmd.class);

  protected Job job;

  public LockExclusiveJobCmd(Job job) {
    this.job = job;
  }

  public Object execute(CommandContext commandContext) {

    if (job == null) {
      throw new ActivitiIllegalArgumentException("job is null");
    }

    if (log.isDebugEnabled()) {
      log.debug("Executing lock exclusive job {} {}", job.getId(), job.getExecutionId());
    }

    if (job.isExclusive()) {
      if (job.getExecutionId() != null) {
        ExecutionEntity execution = commandContext.getExecutionEntityManager().findById(job.getExecutionId());
        if (execution != null) {
          commandContext.getExecutionEntityManager().updateProcessInstanceLockTime(execution.getProcessInstanceId());
        }
      }
    }

    return null;
  }
}    

    

    

            

    

            



    
    






    
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