I am using JDOM and Jaxen together but I fail to get the desired result. I'm
unsure whether it's my lack of knowledge in this area or a bug.
I have the following piece of code:-
1. public class TestJaxen{
2. public static void test(String fileName, String outerXPathExpression,
String innerXPathExpression) {
3. try{
4. SAXBuilder builder = new SAXBuilder();
5. Document doc = builder.build( fileName );
6. XPath xpath = new JDOMXPath( outerXPathExpression );
7. List results = xpath.selectNodes(doc);
8. Iterator iterator = results.iterator();
9. Navigator navigator = xpath.getNavigator();
10. while (iterator.hasNext()) {
11. Object result = iterator.next();
12. XPath xpathInner = new JDOMXPath( innerXPathExpression );
13. Object resultsInner = xpathInner.selectSingleNode(result);
14. Navigator navigatorInner = xpathInner.getNavigator();
15. String valueInner = StringFunction.evaluate(resultsInner,
navigatorInner);
16. System.out.println("valueInner: " + valueInner );
17. }
18. }
19. }
For reference I pass "dsp_f9_21.xml" "TRADING/DOCUMENT"
"S.SG01/S.RFF.Reference/C.C506.Reference" as parameters where the file is as
detailed:-
<?xml version = "1.0" encoding = "UTF-8"?>
<TRADING>
<DOCUMENT DocNumber = "1" DocType = "Despatch Advice">
<S.SG01>
<S.RFF.Reference>
<C.C506.Reference>Hello</C.C506.Reference>
</S.RFF.Reference>
</S.SG01>
</DOCUMENT>
<DOCUMENT DocNumber = "2" DocType = "Despatch Advice">
<S.SG01>
<S.RFF.Reference>
<C.C506.Reference>Hello2</C.C506.Reference>
</S.RFF.Reference>
</S.SG01>
</DOCUMENT>
</TRADING>
Essentially, there are a number of DOCUMENTs in each file and I want to
process the data held within each DOCUMENT. My strategy was to XPath the
file, using "TRADING/DOCUMENT", passing the node-set to a List as in line#7.
Subsequently, I would iterate through the List and process each DOCUMENT in
turn using the second XPath expression,
"S.SG01/S.RFF.Reference/C.C506.Reference", on the result from the first
execution of XPath to achieve this.
Document ------> Node set ---------> Node ------> value
xpath iterate xpath
I hope this makes sense. I managed to do this with Oracle's XDK before
giving up with their bug-ridden implementation.
Any thoughts or help would be appreciated.
Paul Scullion
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