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.TaskEntity;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class TaskVariableDeletedEventHandler {
  
      private static Logger LOGGER = LoggerFactory.getLogger(TaskVariableDeletedEventHandler.class);
  
      private final EntityManager entityManager;
      private final EntityManagerFinder entityManagerFinder;
  
      public TaskVariableDeletedEventHandler(EntityManager entityManager, EntityManagerFinder entityManagerFinder) {
          this.entityManager = entityManager;
          this.entityManagerFinder = entityManagerFinder;
      }
  
      public void handle(CloudVariableDeletedEvent event) {
          String variableName = event.getEntity().getName();
          String taskId = event.getEntity().getTaskId();
          Optional<TaskEntity> findResult = entityManagerFinder.findTaskWithVariables(taskId);
          // if a task was cancelled / completed do not handle this event
          if (findResult.isPresent() && !findResult.get().isInFinalState()) {
              try {
                  TaskEntity taskEntity = findResult.get();
  
                  taskEntity
                      .getVariable(variableName)
                      .ifPresentOrElse(
                          variableEntity -> {
                              // Persist into database
                              taskEntity.getVariables().remove(variableEntity);
                              entityManager.remove(variableEntity);
                          },
                          () -> {
                              LOGGER.debug(
                                  "Unable to find variableEntity with name '" +
                                  variableName +
                                  "' for task instance '" +
                                  taskId +
                                  "'"
                              );
                          }
                      );
              } catch (Exception cause) {
                  LOGGER.debug("Error handling TaskVariableDeletedEvent[" + event + "]", cause);
              }
          }
      }
  }
  