content: /*
   * Copyright 2010-2025 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.engine.impl.cmd;
  
  import java.io.Serializable;
  import org.activiti.engine.ActivitiIllegalArgumentException;
  import org.activiti.engine.delegate.event.ActivitiEventType;
  import org.activiti.engine.delegate.event.impl.ActivitiEventBuilder;
  import org.activiti.engine.impl.bpmn.helper.task.TaskUpdater;
  import org.activiti.engine.impl.history.HistoryLevel;
  import org.activiti.engine.impl.interceptor.Command;
  import org.activiti.engine.impl.interceptor.CommandContext;
  import org.activiti.engine.impl.persistence.entity.TaskEntity;
  import org.activiti.engine.task.Task;
  import org.activiti.engine.task.TaskInfo;
  
  /**
  
   */
  public class SaveTaskCmd implements Command<Task>, Serializable {
  
      private static final long serialVersionUID = 1L;
  
      protected TaskEntity task;
  
      public SaveTaskCmd(Task task) {
          this.task = (TaskEntity) task;
      }
  
      public Task execute(CommandContext commandContext) {
          if (task == null) {
              throw new ActivitiIllegalArgumentException("task is null");
          }
  
          if (task.getRevision() == 0) {
              commandContext.getTaskEntityManager().insert(task, null);
  
              if (commandContext.getEventDispatcher().isEnabled()) {
                  commandContext
                      .getEventDispatcher()
                      .dispatchEvent(ActivitiEventBuilder.createEntityEvent(ActivitiEventType.TASK_CREATED, task));
                  if (task.getAssignee() != null) {
                      commandContext
                          .getEventDispatcher()
                          .dispatchEvent(ActivitiEventBuilder.createEntityEvent(ActivitiEventType.TASK_ASSIGNED, task));
                  }
              }
          } else {
              TaskInfo originalTaskEntity = null;
              if (commandContext.getProcessEngineConfiguration().getHistoryLevel().isAtLeast(HistoryLevel.AUDIT)) {
                  originalTaskEntity = commandContext.getHistoricTaskInstanceEntityManager().findById(task.getId());
              }
              if (originalTaskEntity == null) {
                  originalTaskEntity = commandContext.getTaskEntityManager().findById(task.getId());
              }
  
              TaskUpdater taskUpdater = new TaskUpdater(commandContext);
              taskUpdater.updateTask(originalTaskEntity, task);
              return commandContext.getTaskEntityManager().update(task);
          }
  
          return null;
      }
  }
  