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 com.fasterxml.jackson.databind.JsonNode;
  import com.fasterxml.jackson.databind.node.ObjectNode;
  import java.io.Serializable;
  import org.activiti.bpmn.model.BpmnModel;
  import org.activiti.bpmn.model.SubProcess;
  import org.activiti.bpmn.model.ValuedDataObject;
  import org.activiti.engine.ActivitiIllegalArgumentException;
  import org.activiti.engine.ActivitiObjectNotFoundException;
  import org.activiti.engine.DynamicBpmnConstants;
  import org.activiti.engine.impl.DataObjectImpl;
  import org.activiti.engine.impl.context.Context;
  import org.activiti.engine.impl.interceptor.Command;
  import org.activiti.engine.impl.interceptor.CommandContext;
  import org.activiti.engine.impl.persistence.entity.ExecutionEntity;
  import org.activiti.engine.impl.persistence.entity.TaskEntity;
  import org.activiti.engine.impl.persistence.entity.VariableInstance;
  import org.activiti.engine.impl.util.ProcessDefinitionUtil;
  import org.activiti.engine.runtime.DataObject;
  import org.activiti.engine.task.Task;
  
  public class GetTaskDataObjectCmd implements Command<DataObject>, Serializable {
  
      private static final long serialVersionUID = 1L;
      protected String taskId;
      protected String variableName;
      protected String locale;
      protected boolean withLocalizationFallback;
  
      public GetTaskDataObjectCmd(String taskId, String variableName) {
          this.taskId = taskId;
          this.variableName = variableName;
      }
  
      public GetTaskDataObjectCmd(String taskId, String variableName, String locale, boolean withLocalizationFallback) {
          this.taskId = taskId;
          this.variableName = variableName;
          this.locale = locale;
          this.withLocalizationFallback = withLocalizationFallback;
      }
  
      public DataObject execute(CommandContext commandContext) {
          if (taskId == null) {
              throw new ActivitiIllegalArgumentException("taskId is null");
          }
          if (variableName == null) {
              throw new ActivitiIllegalArgumentException("variableName is null");
          }
  
          TaskEntity task = commandContext.getTaskEntityManager().findById(taskId);
  
          if (task == null) {
              throw new ActivitiObjectNotFoundException("task " + taskId + " doesn't exist", Task.class);
          }
  
          DataObject dataObject = null;
          VariableInstance variableEntity = task.getVariableInstance(variableName, false);
  
          String localizedName = null;
          String localizedDescription = null;
  
          if (variableEntity != null) {
              ExecutionEntity executionEntity = commandContext
                  .getExecutionEntityManager()
                  .findById(variableEntity.getExecutionId());
              while (!executionEntity.isScope()) {
                  executionEntity = executionEntity.getParent();
              }
  
              BpmnModel bpmnModel = ProcessDefinitionUtil.getBpmnModel(executionEntity.getProcessDefinitionId());
              ValuedDataObject foundDataObject = null;
              if (executionEntity.getParentId() == null) {
                  for (ValuedDataObject dataObjectDefinition : bpmnModel.getMainProcess().getDataObjects()) {
                      if (dataObjectDefinition.getName().equals(variableEntity.getName())) {
                          foundDataObject = dataObjectDefinition;
                          break;
                      }
                  }
              } else {
                  SubProcess subProcess = (SubProcess) bpmnModel.getFlowElement(executionEntity.getActivityId());
                  for (ValuedDataObject dataObjectDefinition : subProcess.getDataObjects()) {
                      if (dataObjectDefinition.getName().equals(variableEntity.getName())) {
                          foundDataObject = dataObjectDefinition;
                          break;
                      }
                  }
              }
  
              if (locale != null && foundDataObject != null) {
                  ObjectNode languageNode = Context.getLocalizationElementProperties(
                      locale,
                      foundDataObject.getId(),
                      task.getProcessDefinitionId(),
                      withLocalizationFallback
                  );
  
                  if (languageNode != null) {
                      JsonNode nameNode = languageNode.get(DynamicBpmnConstants.LOCALIZATION_NAME);
                      if (nameNode != null) {
                          localizedName = nameNode.asText();
                      }
                      JsonNode descriptionNode = languageNode.get(DynamicBpmnConstants.LOCALIZATION_DESCRIPTION);
                      if (descriptionNode != null) {
                          localizedDescription = descriptionNode.asText();
                      }
                  }
              }
  
              if (foundDataObject != null) {
                  dataObject = new DataObjectImpl(
                      variableEntity.getName(),
                      variableEntity.getValue(),
                      foundDataObject.getDocumentation(),
                      foundDataObject.getType(),
                      localizedName,
                      localizedDescription,
                      foundDataObject.getId()
                  );
              }
          }
  
          return dataObject;
      }
  }
  