org.keycloak.common.util.MultivaluedHashMap Maven / Gradle / Ivy

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/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags.
 *
 * 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.keycloak.common.util;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @author Bill Burke
 * @version $Revision: 1 $
 */
@SuppressWarnings("serial")
public class MultivaluedHashMap extends HashMap>
{
   public MultivaluedHashMap() {
   }

   public MultivaluedHashMap(Map> map) {
      if (map == null) {
         throw new IllegalArgumentException("Map can not be null");
      }
      putAll(map);
   }


   public MultivaluedHashMap(MultivaluedHashMap config) {
      addAll(config);
   }

   public void putSingle(K key, V value)
   {
      List list = new ArrayList<>();
      list.add(value);
      put(key, list);
   }

   public void addAll(K key, V... newValues)
   {
      for (V value : newValues)
      {
         add(key, value);
      }
   }

   public void addAll(K key, List valueList)
   {
      for (V value : valueList)
      {
         add(key, value);
      }
   }

   public void addFirst(K key, V value)
   {
      List list = get(key);
      if (list == null)
      {
         add(key, value);
      }
      else
      {
         list.add(0, value);
      }
   }
   public final void add(K key, V value)
   {
      getList(key).add(value);
   }


   public final void addMultiple(K key, Collection values)
   {
      getList(key).addAll(values);
   }

   public V getFirst(K key)
   {
      List list = get(key);
      return list == null ? null : list.get(0);
   }

   public final List getList(K key)
   {
      List list = get(key);
      if (list == null)
         put(key, list = new ArrayList<>());
      return list;
   }

   public final void addAll(MultivaluedHashMap other)
   {
      for (Map.Entry> entry : other.entrySet())
      {
         getList(entry.getKey()).addAll(entry.getValue());
      }
   }

   public boolean equalsIgnoreValueOrder(MultivaluedHashMap omap) {
      if (this == omap) {
         return true;
      }
      if (!keySet().equals(omap.keySet())) {
         return false;
      }
      for (Map.Entry> e : entrySet()) {
          List list = e.getValue();
          List olist = omap.get(e.getKey());
          if (!CollectionUtil.collectionEquals(list, olist)) {
              return false;
          }
      }
      return true;
   }
}