java/src/main/com/google/appengine/api/datastore/QueryResultIteratorDelegator.java

   1 // Copyright 2011 Google Inc. All Rights Reserved.
   2
   3 package com.google.appengine.api.datastore;
   4
   5 import java.util.Iterator;
   6 import java.util.List;
   7
   8 /**
   9  * A class that simply forwards {@link Iterator} methods to one delegate
  10  * and forwards {@link List} to another.
  11  *
  12  * @param <T> the type of result returned by the query
  13  *
  14  */
  15 class QueryResultIteratorDelegator<T> implements QueryResultIterator<T> {
  16
  17   private final QueryResult queryResultDelegate;
  18   private final Iterator<T> iteratorDelegate;
  19
  20   QueryResultIteratorDelegator(QueryResult queryResultDelegate,
  21                                Iterator<T> iteratorDelegate) {
  22     this.queryResultDelegate = queryResultDelegate;
  23     this.iteratorDelegate = iteratorDelegate;
  24   }
  25
  26   @Override
  27   public List<Index> getIndexList() {
  28     return queryResultDelegate.getIndexList();
  29   }
  30
  31   @Override
  32   public Cursor getCursor() {
  33     return queryResultDelegate.getCursor();
  34   }
  35
  36   @Override
  37   public boolean hasNext() {
  38     return iteratorDelegate.hasNext();
  39   }
  40
  41   @Override
  42   public T next() {
  43     return iteratorDelegate.next();
  44   }
  45
  46   @Override
  47   public void remove() {
  48     iteratorDelegate.remove();
  49   }
  50
  51 }