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Java > Open Source Codes > org > apache > commons > collections > primitives > adapters > BooleanIteratorIterator


1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 package org.apache.commons.collections.primitives.adapters;
18
19 import java.util.Iterator JavaDoc;
20
21 import org.apache.commons.collections.primitives.BooleanIterator;
22
23 /**
24  * Adapts an {@link org.apache.commons.collections.primitives.BooleanIterator
25  * BooleanIterator} to the {@link java.util.Iterator Iterator} interface.
26  * <p />
27  * This implementation delegates most methods to the provided {@link
28  * org.apache.commons.collections.primitives.BooleanIterator BooleanIterator}
29  * implementation in the "obvious" way.
30  *
31  * @since Commons Primitives 1.1
32  * @version $Revision: 480462 $ $Date: 2006-11-29 00:15:00 -0800 (Wed, 29 Nov 2006) $
33  */
34 public class BooleanIteratorIterator implements Iterator JavaDoc {
35     
36     /**
37      * Create an {@link java.util.Iterator Iterator} wrapping the specified
38      * {@link org.apache.commons.collections.primitives.BooleanIterator
39      * BooleanIterator}. When the given <i>iterator</i> is <code>null</code>,
40      * returns <code>null</code>.
41      *
42      * @param iterator the (possibly <code>null</code>)
43      * {@link org.apache.commons.collections.primitives.BooleanIterator
44      * BooleanIterator} to wrap
45      * @return an {@link java.util.Iterator Iterator} wrapping the given
46      * <i>iterator</i>, or <code>null</code> when <i>iterator</i> is
47      * <code>null</code>.
48      */
49     public static Iterator JavaDoc wrap(BooleanIterator iterator) {
50         return null == iterator ? null : new BooleanIteratorIterator(iterator);
51     }
52     
53     /**
54      * Creates an {@link java.util.Iterator Iterator} wrapping the specified
55      * {@link org.apache.commons.collections.primitives.BooleanIterator
56      * BooleanIterator}.
57      * @see #wrap
58      */
59     public BooleanIteratorIterator(BooleanIterator iterator) {
60         _iterator = iterator;
61     }
62     
63     public boolean hasNext() {
64         return _iterator.hasNext();
65     }
66     
67     public Object JavaDoc next() {
68         return new Boolean JavaDoc(_iterator.next());
69     }
70     
71     public void remove() {
72         _iterator.remove();
73     }
74     
75     private BooleanIterator _iterator = null;
76
77 }
78
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