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 java.util.List;
  import org.activiti.engine.ActivitiIllegalArgumentException;
  import org.activiti.engine.ActivitiObjectNotFoundException;
  import org.activiti.engine.history.HistoricIdentityLink;
  import org.activiti.engine.history.HistoricTaskInstance;
  import org.activiti.engine.impl.interceptor.Command;
  import org.activiti.engine.impl.interceptor.CommandContext;
  import org.activiti.engine.impl.persistence.entity.HistoricIdentityLinkEntity;
  import org.activiti.engine.impl.persistence.entity.HistoricTaskInstanceEntity;
  import org.activiti.engine.task.IdentityLinkType;
  
  /**
  
   */
  public class GetHistoricIdentityLinksForTaskCmd implements Command<List<HistoricIdentityLink>>, Serializable {
  
      private static final long serialVersionUID = 1L;
      protected String taskId;
      protected String processInstanceId;
  
      public GetHistoricIdentityLinksForTaskCmd(String taskId, String processInstanceId) {
          if (taskId == null && processInstanceId == null) {
              throw new ActivitiIllegalArgumentException("taskId or processInstanceId is required");
          }
          this.taskId = taskId;
          this.processInstanceId = processInstanceId;
      }
  
      public List<HistoricIdentityLink> execute(CommandContext commandContext) {
          if (taskId != null) {
              return getLinksForTask(commandContext);
          } else {
              return getLinksForProcessInstance(commandContext);
          }
      }
  
      @SuppressWarnings({ "unchecked", "rawtypes" })
      protected List<HistoricIdentityLink> getLinksForTask(CommandContext commandContext) {
          HistoricTaskInstanceEntity task = commandContext.getHistoricTaskInstanceEntityManager().findById(taskId);
  
          if (task == null) {
              throw new ActivitiObjectNotFoundException(
                  "No historic task exists with the given id: " + taskId,
                  HistoricTaskInstance.class
              );
          }
  
          List<HistoricIdentityLink> identityLinks = (List) commandContext
              .getHistoricIdentityLinkEntityManager()
              .findHistoricIdentityLinksByTaskId(taskId);
  
          // Similar to GetIdentityLinksForTask, return assignee and owner as
          // identity link
          if (task.getAssignee() != null) {
              HistoricIdentityLinkEntity identityLink = commandContext.getHistoricIdentityLinkEntityManager().create();
              identityLink.setUserId(task.getAssignee());
              identityLink.setTaskId(task.getId());
              identityLink.setType(IdentityLinkType.ASSIGNEE);
              identityLinks.add(identityLink);
          }
          if (task.getOwner() != null) {
              HistoricIdentityLinkEntity identityLink = commandContext.getHistoricIdentityLinkEntityManager().create();
              identityLink.setTaskId(task.getId());
              identityLink.setUserId(task.getOwner());
              identityLink.setType(IdentityLinkType.OWNER);
              identityLinks.add(identityLink);
          }
  
          return identityLinks;
      }
  
      @SuppressWarnings({ "unchecked", "rawtypes" })
      protected List<HistoricIdentityLink> getLinksForProcessInstance(CommandContext commandContext) {
          return (List) commandContext
              .getHistoricIdentityLinkEntityManager()
              .findHistoricIdentityLinksByProcessInstanceId(processInstanceId);
      }
  }
  