org.camunda.bpm.engine.impl.persistence.entity.VariableInstanceHistoryListener Maven / Gradle / Ivy

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/*
 * Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
 * under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright
 * ownership. Camunda licenses this file to you under the Apache License,
 * Version 2.0; 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.persistence.entity;

import org.camunda.bpm.engine.impl.context.Context;
import org.camunda.bpm.engine.impl.core.variable.scope.AbstractVariableScope;
import org.camunda.bpm.engine.impl.core.variable.scope.VariableInstanceLifecycleListener;
import org.camunda.bpm.engine.impl.history.HistoryLevel;
import org.camunda.bpm.engine.impl.history.event.HistoryEvent;
import org.camunda.bpm.engine.impl.history.event.HistoryEventProcessor;
import org.camunda.bpm.engine.impl.history.event.HistoryEventTypes;
import org.camunda.bpm.engine.impl.history.producer.HistoryEventProducer;

/**
 * @author Thorben Lindhauer
 *
 */
public class VariableInstanceHistoryListener implements VariableInstanceLifecycleListener {

  public static final VariableInstanceHistoryListener INSTANCE = new VariableInstanceHistoryListener();

  @Override
  public void onCreate(final VariableInstanceEntity variableInstance, final AbstractVariableScope sourceScope) {
    if (getHistoryLevel().isHistoryEventProduced(HistoryEventTypes.VARIABLE_INSTANCE_CREATE, variableInstance) && !variableInstance.isTransient()) {
      HistoryEventProcessor.processHistoryEvents(new HistoryEventProcessor.HistoryEventCreator() {
        @Override
        public HistoryEvent createHistoryEvent(HistoryEventProducer producer) {
          return producer.createHistoricVariableCreateEvt(variableInstance, sourceScope);
        }
      });
    }
  }

  @Override
  public void onDelete(final VariableInstanceEntity variableInstance, final AbstractVariableScope sourceScope) {
    if (getHistoryLevel().isHistoryEventProduced(HistoryEventTypes.VARIABLE_INSTANCE_DELETE, variableInstance) && !variableInstance.isTransient()) {
      HistoryEventProcessor.processHistoryEvents(new HistoryEventProcessor.HistoryEventCreator() {
        @Override
        public HistoryEvent createHistoryEvent(HistoryEventProducer producer) {
          return producer.createHistoricVariableDeleteEvt(variableInstance, sourceScope);
        }
      });
    }
  }

  @Override
  public void onUpdate(final VariableInstanceEntity variableInstance, final AbstractVariableScope sourceScope) {
    if (getHistoryLevel().isHistoryEventProduced(HistoryEventTypes.VARIABLE_INSTANCE_UPDATE, variableInstance) && !variableInstance.isTransient()) {
      HistoryEventProcessor.processHistoryEvents(new HistoryEventProcessor.HistoryEventCreator() {
        @Override
        public HistoryEvent createHistoryEvent(HistoryEventProducer producer) {
          return producer.createHistoricVariableUpdateEvt(variableInstance, sourceScope);
        }
      });
    }
  }

  protected HistoryLevel getHistoryLevel() {
    return Context.getProcessEngineConfiguration().getHistoryLevel();
  }
}