org.camunda.bpm.engine.impl.cmd.FoxDeleteProcessInstanceCmd Maven / Gradle / Ivy

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package org.camunda.bpm.engine.impl.cmd;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

import org.camunda.bpm.engine.ProcessEngineException;
import org.camunda.bpm.engine.impl.interceptor.Command;
import org.camunda.bpm.engine.impl.interceptor.CommandContext;
import org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity;
import org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl;


public class FoxDeleteProcessInstanceCmd implements Command, Serializable {

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

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

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

    ExecutionEntity execution = commandContext
                                  .getExecutionManager()
                                  .findExecutionById(processInstanceId);

    if(execution == null) {
      throw new ProcessEngineException("No process instance found for id '" + processInstanceId + "'");
    }

    commandContext
      .getTaskManager()
      .deleteTasksByProcessInstanceId(processInstanceId, deleteReason, false);

    for (PvmExecutionImpl currentExecution : this.collectExecutionToDelete(execution)) {
      currentExecution.deleteCascade2(deleteReason);
    }
    return null;
  }

  @SuppressWarnings("unchecked")
  public List collectExecutionToDelete(PvmExecutionImpl execution) {
    List result = new ArrayList();
    for (PvmExecutionImpl currentExecution : (List) execution.getExecutions()) {
      result.addAll(this.collectExecutionToDelete(currentExecution));
    }
    if (execution.getSubProcessInstance() != null) {
      result.addAll(this.collectExecutionToDelete(execution.getSubProcessInstance()));
    }
    result.add(execution);
    return result;
  }

}