/*
    * Copyright 2014 the original author or authors.
    *
    * 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.openehealth.ipf.commons.ihe.xds.core.metadata.jaxbadapters;
  
  import javax.xml.bind.annotation.adapters.XmlAdapter;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  /**
   * @author Dmytro Rud
   */
  public class StringMapAdapter extends XmlAdapter<StringMap, Map<String, List<String>>> {
  
      @Override
      public StringMap marshal(Map<String, List<String>> v) throws Exception {
          if (v == null) {
              return null;
          }
  
          StringMap result = new StringMap();
          result.entries = new ArrayList<>();
          for (Map.Entry<String, List<String>> entry : v.entrySet()) {
              StringMapEntry extra = new StringMapEntry();
              extra.setKey(entry.getKey());
              extra.setValues(new ArrayList<>());
              extra.getValues().addAll(entry.getValue());
              result.entries.add(extra);
          }
  
          return result;
      }
  
  
      @Override
      public Map<String, List<String>> unmarshal(StringMap v) throws Exception {
          if ((v == null) || (v.entries == null)) {
              return null;
          }
  
          HashMap<String, List<String>> result = new HashMap<>();
          for (StringMapEntry extra : v.entries) {
              result.put(extra.getKey(), extra.getValues());
          }
          return result;
      }
  
  }