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1
17 package org.apache.servicemix.client;
18
19 import javax.jbi.messaging.NormalizedMessage;
20 import javax.xml.namespace.NamespaceContext  ;
21 import javax.xml.namespace.QName ;
22 import javax.xml.transform.Source ;
23 import javax.xml.xpath.XPath ;
24 import javax.xml.xpath.XPathExpressionException ;
25 import javax.xml.xpath.XPathFactory ;
26 import javax.xml.xpath.XPathFunctionResolver ;
27 import javax.xml.xpath.XPathVariableResolver ;
28
29 import java.util.Map ;
30
31
36 public class XPathHelper {
37 private Source content;
38 private XPathFactory xPathFactory;
39 private XPath xPath;
40
41 public XPathHelper() {
42 }
43
44 public XPathHelper(NormalizedMessage message) {
45 setMessage(message);
46 }
47
48 public XPathHelper(Source content) {
49 setContent(content);
50 }
51
52 public XPathHelper(NormalizedMessage message, Map namespaces) {
53 this(message);
54 setNamespaces(namespaces);
55 }
56
57 public XPathHelper(NormalizedMessage message, NamespaceContext namespaces) {
58 this(message);
59 setNamespaceContext(namespaces);
60 }
61
62 public Object evaluate(String expression, QName arg2) throws XPathExpressionException {
63 return getXPath().evaluate(expression, getItem(), arg2);
64 }
65
66 public String evaluate(String expression) throws XPathExpressionException {
67 return getXPath().evaluate(expression, getItem());
68 }
69
70 public void reset() {
71 if (xPath != null) {
72 getXPath().reset();
73 }
74 }
75
76 public void setMessage(NormalizedMessage message) {
79 setContent(message.getContent());
80 }
81
82 public void setContent(Source content) {
83 this.content = content;
84 }
85
86 public NamespaceContext getNamespaceContext() {
87 return getXPath().getNamespaceContext();
88 }
89
90 public XPathFunctionResolver getXPathFunctionResolver() {
91 return getXPath().getXPathFunctionResolver();
92 }
93
94 public XPathVariableResolver getXPathVariableResolver() {
95 return getXPath().getXPathVariableResolver();
96 }
97
98 public void setNamespaceContext(NamespaceContext context) {
99 getXPath().setNamespaceContext(context);
100 }
101
102 public void setXPathFunctionResolver(XPathFunctionResolver resolver) {
103 getXPath().setXPathFunctionResolver(resolver);
104 }
105
106 public void setXPathVariableResolver(XPathVariableResolver resolver) {
107 getXPath().setXPathVariableResolver(resolver);
108 }
109
110 public XPathFactory getXPathFactory() {
111 if (xPathFactory == null) {
112 xPathFactory = XPathFactory.newInstance();
113 }
114 return xPathFactory;
115 }
116
117 public void setXPathFactory(XPathFactory factory) {
118 this.xPathFactory = factory;
119 }
120
121 public Source getContent() {
122 return content;
123 }
124
125 public XPath getXPath() {
126 if (xPath == null) {
127 xPath = getXPathFactory().newXPath();
128 }
129 return xPath;
130 }
131
132
136 public void setNamespaces(Map namespaces) {
137 setNamespaceContext(new DefaultNamespaceContext(getNamespaceContext(), namespaces));
138
139 }
140
141 protected Object getItem() {
144 return content;
145 }
146 }
147 |
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