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1 package org.jbpm.bpel.data.xpath;
2
3 import java.util.Map  ;
4
5 import org.jaxen.JaxenException;
6 import org.jaxen.SimpleNamespaceContext;
7
8 import org.jbpm.bpel.data.def.Snippet;
9 import org.jbpm.bpel.data.spi.Script;
10 import org.jbpm.bpel.data.spi.ScriptFactory;
11 import org.jbpm.bpel.xml.BpelException;
12
13
18 public class XPathFactory extends ScriptFactory {
19
20 private static final XPathFactory instance = new XPathFactory();
21
22 public Script createScript(Snippet expression) {
23 Snippet.Use use = expression.getUse();
24 String snippet = expression.getText();
25 try {
26 XPathScript expressionPeer;
27 if (use == Snippet.Use.EXPRESSION) {
28 expressionPeer = XPathScript.createExpression(snippet);
29 }
30 else if (use == Snippet.Use.QUERY) {
31 expressionPeer = XPathScript.createQuery(snippet);
32 }
33 else if (use == Snippet.Use.JOIN_CONDITION) {
34 expressionPeer = XPathScript.createJoinCondition(snippet);
35 }
36 else if (use == Snippet.Use.PROPERTY_ALIAS) {
37 expressionPeer = XPathScript.createPropertyAlias(snippet);
38 }
39 else {
40 throw new BpelException("xpath does not support the specified use");
41 }
42 Map namespaces = expression.getNamespaces();
43 if (namespaces != null) {
44 expressionPeer.setNamespaceContext(new SimpleNamespaceContext(namespaces));
45 }
46 return expressionPeer;
47 }
48 catch (JaxenException e) {
49 throw new BpelException(e.getMessage(), e);
50 }
51 }
52
53 public static ScriptFactory getInstance() {
54 return instance;
55 }
56 }
57 |
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