SetIteratorWrapper


1   /*
2    * All content copyright (c) 2003-2006 Terracotta, Inc., except as may otherwise be noted in a separate copyright notice.  All rights reserved.
3    */
4   package com.tc.util;
5   
6   import com.tc.object.bytecode.ManagerUtil;
7   
8   import java.util.Iterator  ;
9   import java.util.Set  ;
10  
11  /**
12   * Since a Set is just a wrapper around a HashMap we need to use this to find out about removes from iterators on sets.
13   * This is how we are doing it.
14   */
15  public class SetIteratorWrapper implements Iterator   {
16    private final Set        set;
17    private final Iterator   iterator;
18    private Object           current;
19  
20    public SetIteratorWrapper(Iterator   iterator, Set   set) {
21      this.set = set;
22      this.iterator = iterator;
23    }
24  
25    public boolean hasNext() {
26      return this.iterator.hasNext();
27    }
28  
29    public Object   next() {
30      current = iterator.next();
31      return current;
32    }
33  
34    public void remove() {
35      ManagerUtil.checkWriteAccess(set);
36      iterator.remove();
37      ManagerUtil.logicalInvoke(set, "remove(Ljava/lang/Object;)Z", new Object  [] { current });
38    }
39  }
40

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