package org.lsst.ccs.bus;
   
   import java.io.IOException;
   import java.io.Serializable;
   import java.util.ArrayList;
   import java.util.Iterator;
   
   /**
    * @author bamade
   */
  // Date: 23/12/2013
  
  public class KVList implements Serializable, Iterable<KeyData> {
      private ArrayList<KeyData> list;
  
      public KVList(int size) {
          list = new ArrayList<>(size);
      }
  
      public KVList() {
          list = new ArrayList<>();
      }
  
      public KVList(String key, Object value) {
          this(1);
          this.add(key, value);
      }
  
      public KVList add(String key, Object value) {
          Object encoded = null;
          try {
              encoded = StatusCodec.encode(value);
          } catch (IOException e) {
              throw new IllegalArgumentException("can't encode this value: " + value, e);
          }
          list.add(new KeyData(key, encoded));
          return this ;
      }
  
      /**
       * not extremely efficient way to retrieve an element
       *
       * @param key
       * @return null if not found!
       */
      public KeyData getPair(String key) {
          for (KeyData keyData : list) {
              if (keyData.getKey().equals(key)) {
                  return keyData;
              }
          }
          return null;
      }
  
      @Override
      public Iterator<KeyData> iterator() {
          return list.iterator();
      }
  }