content: /*
   * Copyright 2017-2025 Hyland Software, Inc. and its affiliates.
   *
   * 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.cloud.services.query.events.handlers;
  
  import jakarta.persistence.EntityManager;
  import java.util.Optional;
  import org.activiti.cloud.api.model.shared.events.CloudVariableDeletedEvent;
  import org.activiti.cloud.services.query.model.ProcessInstanceEntity;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class ProcessVariableDeletedEventHandler {
  
      private static Logger LOGGER = LoggerFactory.getLogger(ProcessVariableDeletedEventHandler.class);
  
      private final EntityManager entityManager;
      private final EntityManagerFinder entityManagerFinder;
  
      public ProcessVariableDeletedEventHandler(EntityManager entityManager, EntityManagerFinder entityManagerFinder) {
          this.entityManager = entityManager;
          this.entityManagerFinder = entityManagerFinder;
      }
  
      public void handle(CloudVariableDeletedEvent event) {
          String variableName = event.getEntity().getName();
          String processInstanceId = event.getEntity().getProcessInstanceId();
          Optional<ProcessInstanceEntity> findResult = entityManagerFinder.findProcessInstanceWithVariables(
              processInstanceId
          );
          // if a task was cancelled / completed do not handle this event
          if (findResult.isPresent() && !findResult.get().isInFinalState()) {
              try {
                  ProcessInstanceEntity processInstanceEntity = findResult.get();
  
                  processInstanceEntity
                      .getVariable(variableName)
                      .ifPresentOrElse(
                          variableEntity -> {
                              // Persist into database
                              processInstanceEntity.getVariables().remove(variableEntity);
  
                              entityManager.remove(variableEntity);
                          },
                          () -> {
                              LOGGER.warn(
                                  "Unable to find variableEntity with name '" +
                                  variableName +
                                  "' for process instance '" +
                                  processInstanceId +
                                  "'"
                              );
                          }
                      );
              } catch (Exception cause) {
                  LOGGER.error("Error handling ProcessVariableDeletedEvent[" + event + "]", cause);
              }
          }
      }
  }
  