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.Collection;
  import java.util.List;
  import org.activiti.bpmn.model.Artifact;
  import org.activiti.bpmn.model.Association;
  import org.activiti.bpmn.model.BpmnModel;
  import org.activiti.bpmn.model.Process;
  import org.activiti.validation.ValidationError;
  import org.activiti.validation.validator.Problems;
  import org.activiti.validation.validator.ValidatorImpl;
  import org.apache.commons.lang3.StringUtils;
  
  /**
  
   */
  public class AssociationValidator extends ValidatorImpl {
  
      @Override
      public void validate(BpmnModel bpmnModel, List<ValidationError> errors) {
          // Global associations
          Collection<Artifact> artifacts = bpmnModel.getGlobalArtifacts();
          if (artifacts != null) {
              for (Artifact artifact : artifacts) {
                  if (artifact instanceof Association) {
                      validate(null, (Association) artifact, errors);
                  }
              }
          }
  
          // Process associations
          for (Process process : bpmnModel.getProcesses()) {
              artifacts = process.getArtifacts();
              for (Artifact artifact : artifacts) {
                  if (artifact instanceof Association) {
                      validate(process, (Association) artifact, errors);
                  }
              }
          }
      }
  
      protected void validate(Process process, Association association, List<ValidationError> errors) {
          if (StringUtils.isEmpty(association.getSourceRef())) {
              addError(errors, Problems.ASSOCIATION_INVALID_SOURCE_REFERENCE, process, association);
          }
          if (StringUtils.isEmpty(association.getTargetRef())) {
              addError(errors, Problems.ASSOCIATION_INVALID_TARGET_REFERENCE, process, association);
          }
      }
  }
  