/*
    * 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.maven.shared.release.transform.jdom2;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  import org.apache.maven.model.Dependency;
  import org.apache.maven.model.DependencyManagement;
  import org.jdom2.Element;
  
  /**
   * JDOM2 implementation of poms DEPENDENCYMANAGEMENT element
   *
   * @author Robert Scholte
   * @since 3.0
   */
  public class JDomDependencyManagement extends DependencyManagement {
      private final Element dependencyManagement;
  
      /**
       * <p>Constructor for JDomDependencyManagement.</p>
       *
       * @param dependencyManagement a {@link org.jdom2.Element} object
       */
      public JDomDependencyManagement(Element dependencyManagement) {
          this.dependencyManagement = dependencyManagement;
      }
  
      @Override
      public void addDependency(Dependency dependency) {
          throw new UnsupportedOperationException();
      }
  
      @Override
      public List<Dependency> getDependencies() {
          Element dependenciesElm = dependencyManagement.getChild("dependencies", dependencyManagement.getNamespace());
          if (dependenciesElm == null) {
              return Collections.emptyList();
          } else {
              List<Element> dependencyElms =
                      dependenciesElm.getChildren("dependency", dependencyManagement.getNamespace());
  
              List<Dependency> dependencies = new ArrayList<>(dependencyElms.size());
  
              for (Element dependencyElm : dependencyElms) {
                  dependencies.add(new JDomDependency(dependencyElm));
              }
  
              return dependencies;
          }
      }
  
      @Override
      public void removeDependency(Dependency dependency) {
          throw new UnsupportedOperationException();
      }
  
      @Override
      public void setDependencies(List<Dependency> dependencies) {
          throw new UnsupportedOperationException();
      }
  }