content: /*
   * Copyright 2017-2025 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.services.connectors.conf;
  
  import java.util.List;
  import java.util.stream.Collectors;
  import org.activiti.bpmn.model.ServiceTask;
  import org.activiti.engine.RepositoryService;
  import org.activiti.engine.repository.ProcessDefinition;
  import org.springframework.util.StringUtils;
  
  public class RepositoryConnectorImplementationsProvider implements ConnectorImplementationsProvider {
  
      private final RepositoryService repositoryService;
  
      public RepositoryConnectorImplementationsProvider(RepositoryService repositoryService) {
          this.repositoryService = repositoryService;
      }
  
      @Override
      public List<String> getImplementations() {
          List<ProcessDefinition> list = repositoryService.createProcessDefinitionQuery().list();
  
          return list
              .stream()
              .map(ProcessDefinition::getId)
              .map(repositoryService::getBpmnModel)
              .flatMap(model -> model.getProcesses().stream())
              .flatMap(process -> process.getFlowElements().stream())
              .filter(ServiceTask.class::isInstance)
              .map(ServiceTask.class::cast)
              .filter(task -> !StringUtils.hasText(task.getImplementationType()))
              .map(ServiceTask::getImplementation)
              .distinct()
              .collect(Collectors.toList());
      }
  }
  