content: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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.apache.oozie.ambari.view.workflowmanager;
  
  import org.apache.ambari.view.DataStore;
  import org.apache.ambari.view.PersistenceException;
  import org.apache.oozie.ambari.view.repo.BaseRepo;
  import org.apache.oozie.ambari.view.workflowmanager.model.Workflow;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.List;
  
  public class WorkflowsRepo extends BaseRepo<Workflow> {
    private final static Logger LOGGER = LoggerFactory
            .getLogger(WorkflowsRepo.class);
    public WorkflowsRepo(DataStore dataStore) {
      super(Workflow.class, dataStore);
  
    }
    public Collection<Workflow> getWorkflows(String userName){
      try {
        Collection<Workflow> workflows = this.dataStore.findAll(Workflow.class,
          "owner='" + userName + "'");
        return  workflows;
      } catch (PersistenceException e) {
        throw new RuntimeException(e);
      }
    }
  
    public Workflow getWorkflowByPath(String path, String userName) {
      try {
        Collection<Workflow> workflows = this.dataStore.findAll(Workflow.class,
          "workflowDefinitionPath='" + path + "'");
        if (workflows == null || workflows.isEmpty()) {
          return null;
        } else {
          List<Workflow> myWorkflows = filterWorkflows(workflows, userName, true);
          if (myWorkflows.isEmpty()) {
            return null;
          } else if (myWorkflows.size() == 1) {
            return myWorkflows.get(0);
          } else {
            LOGGER.error("Duplicate workflows found having same path");
            throw new RuntimeException("Duplicate workflows. Remove one in Recent Workflows Manager");
          }
        }
      } catch (PersistenceException e) {
        throw new RuntimeException(e);
      }
    }
  
    private List<Workflow> filterWorkflows(Collection<Workflow> workflows,String userName,boolean matches ) {
      List<Workflow> filteredWorkflows = new ArrayList<>();
      for (Workflow wf : workflows) {
        if (matches && userName.equals(wf.getOwner())) {
          filteredWorkflows.add(wf);
        } else if (!matches && !userName.equals(wf.getOwner())) {
          filteredWorkflows.add(wf);
        }
      }
      return filteredWorkflows;
    }
  }
  