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.solr.common.params;
  
  import org.apache.solr.common.util.StrUtils;
  
  import java.util.Iterator;
  import java.util.Map;
  import java.io.IOException;
  
  /**
   * @version $Id$
   */
  public class MultiMapSolrParams extends SolrParams {
    protected final Map<String,String[]> map;
  
    public static void addParam(String name, String val, Map<String,String[]> map) {
        String[] arr = map.get(name);
        if (arr ==null) {
          arr =new String[]{val};
        } else {
          String[] newarr = new String[arr.length+1];
          System.arraycopy(arr,0,newarr,0,arr.length);
          newarr[arr.length]=val;
          arr =newarr;
        }
        map.put(name, arr);
    }
  
    public MultiMapSolrParams(Map<String,String[]> map) {
      this.map = map;
    }
  
    @Override
    public String get(String name) {
      String[] arr = map.get(name);
      return arr==null ? null : arr[0];
    }
  
    @Override
    public String[] getParams(String name) {
      return map.get(name);
    }
  
    @Override
    public Iterator<String> getParameterNamesIterator() {
      return map.keySet().iterator();
    }
  
    public Map<String,String[]> getMap() { return map; }
  
    @Override
    public String toString() {
      StringBuilder sb = new StringBuilder(128);
      try {
        boolean first=true;
  
        for (Map.Entry<String,String[]> entry : map.entrySet()) {
          String key = entry.getKey();
          String[] valarr = entry.getValue();
  
          for (String val : valarr) {
            if (!first) sb.append('&');
            first=false;
            sb.append(key);
            sb.append('=');
            StrUtils.partialURLEncodeVal(sb, val==null ? "" : val);
          }
        }
      }
      catch (IOException e) {throw new RuntimeException(e);}  // can't happen
  
      return sb.toString();
    }
  
  
  }
  