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Java > Open Source Codes > classycle > util > NotStringPattern


1 /*
2  * Copyright (c) 2003-2006, Franz-Josef Elmer, All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions are met:
6  *
7  * - Redistributions of source code must retain the above copyright notice,
8  * this list of conditions and the following disclaimer.
9  * - Redistributions in binary form must reproduce the above copyright notice,
10  * this list of conditions and the following disclaimer in the documentation
11  * and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
14  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
15  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
20  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
21  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
22  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
23  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24  */
25 package classycle.util;
26
27 /**
28  * Logical NOT operation on the result of a wrapped {@link StringPattern}.
29  *
30  * @author Franz-Josef Elmer
31  */
32 public class NotStringPattern implements StringPattern
33 {
34   private final StringPattern _pattern;
35   
36   /**
37    * Creates an instance based on the specified pattern.
38    * @param pattern Pattern who's matching result will be negate.
39    * Must be not <tt>null</tt>.
40    */
41   public NotStringPattern(StringPattern pattern)
42   {
43     _pattern = pattern;
44   }
45
46   /**
47    * Returns <tt>true</tt> if the wrapped {@link StringPattern} returns
48    * <tt>false</tt> and vice-versa.
49    */
50   public boolean matches(String JavaDoc string)
51   {
52     return !_pattern.matches(string);
53   }
54
55   public String JavaDoc toString()
56   {
57     return '!' + _pattern.toString();
58   }
59 }
60
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