Package org.camunda.bpm.engine.impl.pvm.runtime.operation

Source Code of org.camunda.bpm.engine.impl.pvm.runtime.operation.PvmAtomicOperationDeleteCascade

/* 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.camunda.bpm.engine.impl.pvm.runtime.operation;

import java.util.List;

import org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl;


/**
* @author Tom Baeyens
*/
public class PvmAtomicOperationDeleteCascade implements PvmAtomicOperation {

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

  public void execute(PvmExecutionImpl execution) {
    PvmExecutionImpl firstLeaf = findFirstLeaf(execution);

    // propagate skipCustomListeners property
    PvmExecutionImpl deleteRoot = getDeleteRoot(execution);
    if(deleteRoot != null) {
      firstLeaf.setSkipCustomListeners(deleteRoot.isSkipCustomListeners());
    }

    if (firstLeaf.getSubProcessInstance()!=null) {
      firstLeaf.getSubProcessInstance().deleteCascade(execution.getDeleteReason(), firstLeaf.isSkipCustomListeners());
    }

    firstLeaf.performOperation(DELETE_CASCADE_FIRE_ACTIVITY_END);
  }

  protected PvmExecutionImpl findFirstLeaf(PvmExecutionImpl execution) {
    List<? extends PvmExecutionImpl> executions = execution.getExecutions();
    if (executions.size()>0) {
      return findFirstLeaf(executions.get(0));
    }
    return execution;
  }

  protected PvmExecutionImpl getDeleteRoot(PvmExecutionImpl execution) {
    if(execution == null) {
      return null;
    } else if(execution.isDeleteRoot()) {
      return execution;
    } else {
      return getDeleteRoot(execution.getParent());
    }
  }

  public String getCanonicalName() {
    return "delete-cascade";
  }
}
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