1 | |
|
2 | |
|
3 | |
|
4 | |
|
5 | |
|
6 | |
|
7 | |
|
8 | |
|
9 | |
|
10 | |
|
11 | |
|
12 | |
|
13 | |
|
14 | |
|
15 | |
|
16 | |
|
17 | |
|
18 | |
|
19 | |
|
20 | |
|
21 | |
|
22 | |
|
23 | |
|
24 | |
|
25 | |
|
26 | |
|
27 | |
|
28 | |
|
29 | |
|
30 | |
|
31 | |
|
32 | |
|
33 | |
|
34 | |
|
35 | |
|
36 | |
|
37 | |
|
38 | |
|
39 | |
|
40 | |
|
41 | |
|
42 | |
|
43 | |
|
44 | |
|
45 | |
|
46 | |
|
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 | |
|
66 | |
|
67 | |
DefaultLocationPath() |
68 | 5598 | { |
69 | 5598 | this.steps = new LinkedList(); |
70 | 5598 | } |
71 | |
|
72 | |
public void addStep(Step step) |
73 | |
{ |
74 | 9298 | getSteps().add(step); |
75 | 9298 | } |
76 | |
|
77 | |
public List getSteps() |
78 | |
{ |
79 | 35898 | return this.steps; |
80 | |
} |
81 | |
|
82 | |
public Expr simplify() |
83 | |
{ |
84 | 5490 | Iterator stepIter = getSteps().iterator(); |
85 | 5490 | Step eachStep = null; |
86 | 14714 | while (stepIter.hasNext()) |
87 | |
{ |
88 | 9224 | eachStep = (Step) stepIter.next(); |
89 | 9224 | eachStep.simplify(); |
90 | |
} |
91 | 5490 | 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 | |
} |
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 | |
} |
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 | 7332 | List nodeSet = context.getNodeSet(); |
132 | 7332 | List contextNodeSet = new ArrayList(nodeSet); |
133 | 7332 | ContextSupport support = context.getContextSupport(); |
134 | 7332 | Context stepContext = new Context(support); |
135 | 7332 | Iterator stepIter = getSteps().iterator(); |
136 | 17092 | while ( stepIter.hasNext() ) |
137 | |
{ |
138 | 9768 | Step eachStep = (Step) stepIter.next(); |
139 | 9768 | stepContext.setNodeSet(contextNodeSet); |
140 | 9768 | contextNodeSet = eachStep.evaluate(stepContext); |
141 | |
|
142 | 9760 | if (isReverseAxis(eachStep)) { |
143 | 222 | Collections.reverse(contextNodeSet); |
144 | |
} |
145 | 9760 | } |
146 | |
|
147 | 7324 | if (getSteps().size() > 1 || nodeSet.size() > 1) { |
148 | 1922 | Collections.sort(contextNodeSet, new NodeComparator(support.getNavigator())); |
149 | |
} |
150 | |
|
151 | 7324 | return contextNodeSet; |
152 | |
} |
153 | |
|
154 | |
private boolean isReverseAxis(Step step) { |
155 | |
|
156 | 9760 | int axis = step.getAxis(); |
157 | 9760 | 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 | |
|