1 /*
2  * $Header: /cvsroot/jaxen/jaxen/src/java/main/org/jaxen/expr/DefaultPredicated.java,v 1.3 2002/04/26 17:17:34 jstrachan Exp $
3  * $Revision: 1.3 $
4  * $Date: 2002/04/26 17:17:34 $
5  *
6  * ====================================================================
7  *
8  * Copyright (C) 2000-2002 bob mcwhirter & James Strachan.
9  * All rights reserved.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  *
15  * 1. Redistributions of source code must retain the above copyright
16  *    notice, this list of conditions, and the following disclaimer.
17  *
18  * 2. Redistributions in binary form must reproduce the above copyright
19  *    notice, this list of conditions, and the disclaimer that follows
20  *    these conditions in the documentation and/or other materials
21  *    provided with the distribution.
22  *
23  * 3. The name "Jaxen" must not be used to endorse or promote products
24  *    derived from this software without prior written permission.  For
25  *    written permission, please contact license@jaxen.org.
26  *
27  * 4. Products derived from this software may not be called "Jaxen", nor
28  *    may "Jaxen" appear in their name, without prior written permission
29  *    from the Jaxen Project Management (pm@jaxen.org).
30  *
31  * In addition, we request (but do not require) that you include in the
32  * end-user documentation provided with the redistribution and/or in the
33  * software itself an acknowledgement equivalent to the following:
34  *     "This product includes software developed by the
35  *      Jaxen Project (http://www.jaxen.org/)."
36  * Alternatively, the acknowledgment may be graphical using the logos
37  * available at http://www.jaxen.org/
38  *
39  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
40  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
41  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
42  * DISCLAIMED.  IN NO EVENT SHALL THE Jaxen AUTHORS OR THE PROJECT
43  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
45  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
46  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
47  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
48  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
49  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50  * SUCH DAMAGE.
51  *
52  * ====================================================================
53  * This software consists of voluntary contributions made by many
54  * individuals on behalf of the Jaxen Project and was originally
55  * created by bob mcwhirter <bob@werken.com> and
56  * James Strachan <jstrachan@apache.org>.  For more information on the
57  * Jaxen Project, please see <http://www.jaxen.org/>.
58  *
59  * $Id: DefaultPredicated.java,v 1.3 2002/04/26 17:17:34 jstrachan Exp $
60  */
61 
62 
63 
64 package org.jaxen.expr;
65 
66 import java.util.List;
67 import java.util.ArrayList;
68 import java.util.Iterator;
69 
70 class DefaultPredicated
71 {
72     private List predicates;
73 
DefaultPredicated()74     protected DefaultPredicated()
75     {
76         this.predicates = new ArrayList();
77     }
78 
getPredicates()79     public List getPredicates()
80     {
81         return this.predicates;
82     }
83 
addPredicate(Predicate predicate)84     public void addPredicate(Predicate predicate)
85     {
86         getPredicates().add( predicate );
87     }
88 
getText()89     public String getText()
90     {
91         StringBuffer buf      = new StringBuffer();
92         Iterator     predIter = getPredicates().iterator();
93 
94         while ( predIter.hasNext() )
95         {
96             buf.append( ((Predicate)predIter.next()).getText() );
97         }
98 
99         return buf.toString();
100     }
101 
toString()102     public String toString()
103     {
104         StringBuffer buf      = new StringBuffer();
105         Iterator     predIter = getPredicates().iterator();
106 
107         while( predIter.hasNext() )
108         {
109             buf.append( predIter.next().toString() );
110 
111             if ( predIter.hasNext() )
112             {
113                 buf.append(", ");
114             }
115         }
116 
117         return buf.toString();
118     }
119 
simplifyAllPredicates()120     public void simplifyAllPredicates()
121     {
122         Iterator  predIter = getPredicates().iterator();
123         Predicate eachPred = null;
124 
125         while ( predIter.hasNext() )
126         {
127             eachPred = (Predicate) predIter.next();
128 
129             eachPred.simplify();
130         }
131     }
132 }
133