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.validation.validator.impl;
  
  import java.util.List;
  import org.activiti.bpmn.model.BpmnModel;
  import org.activiti.bpmn.model.EventDefinition;
  import org.activiti.bpmn.model.EventSubProcess;
  import org.activiti.bpmn.model.MessageEventDefinition;
  import org.activiti.bpmn.model.Process;
  import org.activiti.bpmn.model.SignalEventDefinition;
  import org.activiti.bpmn.model.StartEvent;
  import org.activiti.validation.ValidationError;
  import org.activiti.validation.validator.Problems;
  import org.activiti.validation.validator.ProcessLevelValidator;
  
  /**
  
   */
  public class EventSubprocessValidator extends ProcessLevelValidator {
  
      @Override
      protected void executeValidation(BpmnModel bpmnModel, Process process, List<ValidationError> errors) {
          List<EventSubProcess> eventSubprocesses = process.findFlowElementsOfType(EventSubProcess.class);
          for (EventSubProcess eventSubprocess : eventSubprocesses) {
              List<StartEvent> startEvents = process.findFlowElementsInSubProcessOfType(
                  eventSubprocess,
                  StartEvent.class
              );
              for (StartEvent startEvent : startEvents) {
                  if (startEvent.getEventDefinitions() != null && !startEvent.getEventDefinitions().isEmpty()) {
                      EventDefinition eventDefinition = startEvent.getEventDefinitions().get(0);
                      if (
                          !(eventDefinition instanceof org.activiti.bpmn.model.ErrorEventDefinition) &&
                          !(eventDefinition instanceof MessageEventDefinition) &&
                          !(eventDefinition instanceof SignalEventDefinition)
                      ) {
                          addError(
                              errors,
                              Problems.EVENT_SUBPROCESS_INVALID_START_EVENT_DEFINITION,
                              process,
                              eventSubprocess
                          );
                      }
                  }
              }
          }
      }
  }
  