/**
 * 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.api.resources;

import java.util.HashSet;
import java.util.Set;

import org.apache.ambari.server.controller.spi.Resource;

/**
 * An extension version is like a stack version but it contains custom services.  Linking an extension
 * version to the current stack version allows the cluster to install the custom services contained in
 * the extension version.
 */
public class ExtensionVersionResourceDefinition extends BaseResourceDefinition {

  public ExtensionVersionResourceDefinition() {
    super(Resource.Type.ExtensionVersion);
  }

  @Override
  public String getPluralName() {
    return "versions";
  }

  @Override
  public String getSingularName() {
    return "version";
  }

  @Override
  public Set<SubResourceDefinition> getSubResourceDefinitions() {

    Set<SubResourceDefinition> children = new HashSet<>();

    return children;
  }
}