01: /*
02: * Copyright 1999-2004 The Apache Software Foundation
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: */
16: package org.apache.commons.collections.iterators;
17:
18: import java.util.Iterator;
19:
20: import org.apache.commons.collections.functors.UniquePredicate;
21:
22: /**
23: * A FilterIterator which only returns "unique" Objects. Internally,
24: * the Iterator maintains a Set of objects it has already encountered,
25: * and duplicate Objects are skipped.
26: *
27: * @since Commons Collections 2.1
28: * @version $Revision: 155406 $ $Date: 2005-02-26 12:55:26 +0000 (Sat, 26 Feb 2005) $
29: *
30: * @author Morgan Delagrange
31: */
32: public class UniqueFilterIterator extends FilterIterator {
33:
34: //-------------------------------------------------------------------------
35:
36: /**
37: * Constructs a new <code>UniqueFilterIterator</code>.
38: *
39: * @param iterator the iterator to use
40: */
41: public UniqueFilterIterator(Iterator iterator) {
42: super(iterator, UniquePredicate.getInstance());
43: }
44:
45: }
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