Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
DefaultLocationPath |
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| 1.8888888888888888;1.889 |
1 | /* | |
2 | * $Header: /home/projects/jaxen/scm/jaxen/src/java/main/org/jaxen/expr/DefaultLocationPath.java,v 1.29 2006/02/05 21:47:40 elharo Exp $ | |
3 | * $Revision: 1.29 $ | |
4 | * $Date: 2006/02/05 21:47:40 $ | |
5 | * | |
6 | * ==================================================================== | |
7 | * | |
8 | * Copyright 2000-2002 bob mcwhirter & James Strachan. | |
9 | * All rights reserved. | |
10 | * | |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions are | |
14 | * met: | |
15 | * | |
16 | * * Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * | |
19 | * * Redistributions in binary form must reproduce the above copyright | |
20 | * notice, this list of conditions and the following disclaimer in the | |
21 | * documentation and/or other materials provided with the distribution. | |
22 | * | |
23 | * * Neither the name of the Jaxen Project nor the names of its | |
24 | * contributors may be used to endorse or promote products derived | |
25 | * from this software without specific prior written permission. | |
26 | * | |
27 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS | |
28 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED | |
29 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A | |
30 | * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER | |
31 | * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
32 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
33 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
34 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
35 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
36 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
37 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
38 | * | |
39 | * ==================================================================== | |
40 | * This software consists of voluntary contributions made by many | |
41 | * individuals on behalf of the Jaxen Project and was originally | |
42 | * created by bob mcwhirter <bob@werken.com> and | |
43 | * James Strachan <jstrachan@apache.org>. For more information on the | |
44 | * Jaxen Project, please see <http://www.jaxen.org/>. | |
45 | * | |
46 | * $Id: DefaultLocationPath.java,v 1.29 2006/02/05 21:47:40 elharo Exp $ | |
47 | */ | |
48 | package org.jaxen.expr; | |
49 | ||
50 | import java.util.ArrayList; | |
51 | import java.util.Collections; | |
52 | import java.util.Iterator; | |
53 | import java.util.LinkedList; | |
54 | import java.util.List; | |
55 | ||
56 | import org.jaxen.Context; | |
57 | import org.jaxen.ContextSupport; | |
58 | import org.jaxen.JaxenException; | |
59 | ||
60 | abstract class DefaultLocationPath extends DefaultExpr implements LocationPath | |
61 | { | |
62 | private List steps; | |
63 | ||
64 | /** | |
65 | * Create a new empty location path. | |
66 | */ | |
67 | DefaultLocationPath() | |
68 | 5514 | { |
69 | 5514 | this.steps = new LinkedList(); |
70 | 5514 | } |
71 | ||
72 | public void addStep(Step step) | |
73 | { | |
74 | 9156 | getSteps().add(step); |
75 | 9156 | } |
76 | ||
77 | public List getSteps() | |
78 | { | |
79 | 35528 | return this.steps; |
80 | } | |
81 | ||
82 | public Expr simplify() | |
83 | { | |
84 | 5406 | Iterator stepIter = getSteps().iterator(); |
85 | 5406 | Step eachStep = null; |
86 | 14488 | while (stepIter.hasNext()) |
87 | { | |
88 | 9082 | eachStep = (Step) stepIter.next(); |
89 | 9082 | eachStep.simplify(); |
90 | 9082 | } |
91 | 5406 | return this; |
92 | } | |
93 | ||
94 | public String getText() | |
95 | { | |
96 | 2140 | StringBuffer buf = new StringBuffer(); |
97 | 2140 | Iterator stepIter = getSteps().iterator(); |
98 | 5928 | while (stepIter.hasNext()) |
99 | { | |
100 | 3788 | buf.append(((Step) stepIter.next()).getText()); |
101 | 3788 | if (stepIter.hasNext()) |
102 | { | |
103 | 1656 | buf.append("/"); |
104 | 1656 | } |
105 | } | |
106 | 2140 | return buf.toString(); |
107 | } | |
108 | ||
109 | public String toString() | |
110 | { | |
111 | 4 | StringBuffer buf = new StringBuffer(); |
112 | 4 | Iterator stepIter = getSteps().iterator(); |
113 | 10 | while (stepIter.hasNext()) |
114 | { | |
115 | 6 | buf.append(stepIter.next().toString()); |
116 | 6 | if (stepIter.hasNext()) |
117 | { | |
118 | 2 | buf.append("/"); |
119 | 2 | } |
120 | } | |
121 | 4 | return buf.toString(); |
122 | } | |
123 | ||
124 | public boolean isAbsolute() | |
125 | { | |
126 | 2092 | return false; |
127 | } | |
128 | ||
129 | public Object evaluate(Context context) throws JaxenException | |
130 | { | |
131 | 7260 | List nodeSet = context.getNodeSet(); |
132 | 7260 | List contextNodeSet = new ArrayList(nodeSet); |
133 | 7260 | ContextSupport support = context.getContextSupport(); |
134 | 7260 | Context stepContext = new Context(support); |
135 | 7260 | Iterator stepIter = getSteps().iterator(); |
136 | 16890 | while ( stepIter.hasNext() ) |
137 | { | |
138 | 9638 | Step eachStep = (Step) stepIter.next(); |
139 | 9638 | stepContext.setNodeSet(contextNodeSet); |
140 | 9638 | contextNodeSet = eachStep.evaluate(stepContext); |
141 | // now we need to reverse the list if this is a reverse axis | |
142 | 9630 | if (isReverseAxis(eachStep)) { |
143 | 222 | Collections.reverse(contextNodeSet); |
144 | } | |
145 | 9630 | } |
146 | ||
147 | 7252 | if (getSteps().size() > 1) { |
148 | 1856 | Collections.sort(contextNodeSet, new NodeComparator(support.getNavigator())); |
149 | } | |
150 | ||
151 | 7252 | return contextNodeSet; |
152 | } | |
153 | ||
154 | private boolean isReverseAxis(Step step) { | |
155 | ||
156 | 9630 | int axis = step.getAxis(); |
157 | 9630 | return axis == org.jaxen.saxpath.Axis.PRECEDING |
158 | || axis == org.jaxen.saxpath.Axis.PRECEDING_SIBLING | |
159 | || axis == org.jaxen.saxpath.Axis.ANCESTOR | |
160 | || axis == org.jaxen.saxpath.Axis.ANCESTOR_OR_SELF; | |
161 | } | |
162 | ||
163 | } | |
164 |