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
   *
   *     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.apache.ambari.server.view;
  
  import java.util.HashSet;
  import java.util.List;
  import java.util.Set;
  
  import org.apache.ambari.server.api.resources.BaseResourceDefinition;
  import org.apache.ambari.server.api.resources.SubResourceDefinition;
  import org.apache.ambari.server.controller.spi.Resource;
  import org.apache.ambari.server.orm.entities.ViewEntity;
  import org.apache.ambari.server.view.configuration.ResourceConfig;
  
  /**
   * View sub-resource definition based on a view resource configuration.
   */
  public class ViewSubResourceDefinition extends BaseResourceDefinition {
    /**
     * The associated view definition.
     */
    private final ViewEntity viewDefinition;
  
    /**
     * The configuration.
     */
    private final ResourceConfig resourceConfiguration;
  
    /**
     * The sub resource definitions.
     */
    Set<SubResourceDefinition> definitions;
  
  
    // ----- Constructors ------------------------------------------------------
  
    /**
     * Construct a sub-resource definition.
     *
     * @param viewDefinition         the view definition
     * @param resourceConfiguration  the resource configuration
     */
    public ViewSubResourceDefinition(ViewEntity viewDefinition, ResourceConfig resourceConfiguration) {
      super(new Resource.Type(viewDefinition.getQualifiedResourceTypeName(resourceConfiguration.getName())));
  
      this.viewDefinition        = viewDefinition;
      this.resourceConfiguration = resourceConfiguration;
    }
  
  
    // ----- ResourceDefinition ------------------------------------------------
  
    @Override
    public String getPluralName() {
      return resourceConfiguration.getPluralName();
    }
  
    @Override
    public String getSingularName() {
      return resourceConfiguration.getName();
    }
  
    @Override
    public synchronized Set<SubResourceDefinition> getSubResourceDefinitions() {
      if (definitions == null) {
        definitions = new HashSet<>();
        List<String> subResourceNames = resourceConfiguration.getSubResourceNames();
        if (subResourceNames != null) {
          for (String subType : subResourceNames) {
            Resource.Type type = Resource.Type.valueOf(
                viewDefinition.getQualifiedResourceTypeName(subType));
            definitions.add(new SubResourceDefinition(type));
          }
        }
      }
      return definitions;
    }
  
  
    // ----- helper methods ----------------------------------------------------
  
    /**
     * Get the associated resource configuration.
     *
     * @return the resource configuration
     */
    public ResourceConfig getResourceConfiguration() {
      return resourceConfiguration;
    }
  }
  