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Java > Open Source Codes > com > hp > hpl > jena > graph > query > regexptrees > Alternatives


1 /*
2   (c) Copyright 2004, 2005 Hewlett-Packard Development Company, LP, all rights reserved.
3   [See end of file]
4   $Id: Alternatives.java,v 1.2 2005/02/21 11:52:27 andy_seaborne Exp $
5 */
6 package com.hp.hpl.jena.graph.query.regexptrees;
7
8 import java.util.List JavaDoc;
9
10 /**
11      Alt - expresses patterns which are an (ordered) sequence of alternatives.
12      @author kers
13 */
14 public class Alternatives extends MultiOperandTree
15     {
16     public Alternatives( RegexpTree [] operands )
17         { super( operands ); }
18     
19     public static RegexpTree create( List JavaDoc operands )
20         {
21         if (operands.size() == 1)
22             return (RegexpTree) operands.get(0);
23         else
24             return new Alternatives( (RegexpTree []) operands.toArray( new RegexpTree [operands.size()] ));
25         }
26     
27     public boolean equals( Object JavaDoc other )
28         { return other instanceof Alternatives && sameOperands( (Alternatives) other ); }
29
30     public int hashCode()
31         { return hashCode( 1 ); }
32
33     public String JavaDoc toString()
34         { return toString( "alt" ); }
35     }
36
37
38 /*
39 (c) Copyright 2004, 2005 Hewlett-Packard Development Company, LP
40 All rights reserved.
41
42 Redistribution and use in source and binary forms, with or without
43 modification, are permitted provided that the following conditions
44 are met:
45
46 1. Redistributions of source code must retain the above copyright
47    notice, this list of conditions and the following disclaimer.
48
49 2. Redistributions in binary form must reproduce the above copyright
50    notice, this list of conditions and the following disclaimer in the
51    documentation and/or other materials provided with the distribution.
52
53 3. The name of the author may not be used to endorse or promote products
54    derived from this software without specific prior written permission.
55
56 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
57 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
58 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
59 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
60 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
61 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
62 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
63 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
64 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
65 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
66 */
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