Hi all together,
I have a question concerning XPath evaluation with Dom4J.
Here the relevant Java code snippet of my program:
private Document createConfirmationXML(String generatePDF, String
validatePrev, String createdFlag, String statusMessage)
{
if (xmlConfirmationDoc == null) // first creation of
confirmation Doc
{
xmlConfirmationDoc =
DocumentFactory.getInstance().createDocument();
confirmation =
xmlConfirmationDoc.addElement("confirmation").addAttribute("generate_pdf",
generatePDF)
.addAttribute("week",
week).addAttribute("validate_prev", validatePrev)
.addAttribute("xsi:noNamespaceSchemaLocation", "confirmations.xsd");
confirmation.add(new org.dom4j.Namespace("xsi",
"http://www.w3.org/2001/XMLSchema-instance";));
confPrev =
confirmation.addElement("prevision").addAttribute("id",
prevId).addAttribute("created", createdFlag);
confPrev.addElement("status").addText(statusMessage);
}
else // in case confirmation doc already exists
{
// it has to be checked if a <prevision> element for the
given prevId already exists
Map uris = new HashMap();
uris.put("xsi", "http://www.w3.org/2001/XMLSchema-instance";);
XPath xpath =
xmlConfirmationDoc.createXPath("/confirmation/[EMAIL PROTECTED]'" + prevId
+ "']");
xpath.setNamespaceURIs(uris);
List results = xpath.selectNodes(xmlConfirmationDoc);
if (results.size() == 0) // <prevision> element does not
already exist for the given prevId
{
confPrev =
confirmation.addElement("prevision").addAttribute("id",
prevId).addAttribute("created", createdFlag);
confPrev.addElement("status").addText(statusMessage);
}
else // <prevision> element already exists for the given prevId
{
for (Iterator iterator = results.iterator();
iterator.hasNext();)
{
Element confPrevision = (Element)iterator.next();
confPrevision.addElement("status").addText(statusMessage);
}
}
}
return xmlConfirmationDoc;
}
And this is an example for a confirmation.xml that has to be generated
and parsed:
<?xml version="1.0" encoding="UTF-8"?>
<confirmation generated_pdf="true" week="2003-02-01"
validated_prev="true"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:noNamespaceSchemaLocation="confirmations.xsd">
<prevision id="L_2003123" created="true">
<status>prevision created successfully</status>
</prevision>
</confirmation>
For me my Java code looks correct. However, if I run the program, I
always get an error stating that the XPath expression in the following
line is invalid:
XPath xpath =
xmlConfirmationDoc.createXPath("/confirmation/[EMAIL PROTECTED]'" + prevId
+ "']");
The weird thing is that if I test the same XPath expression with XML-Spy
I get the requested <prevision> node.
I am currently using DOM4J 1.6.1. with Java 4 (can't use Java 6 at work).
I would be very happy, if someone can help me fix that issue.
Best regards,
Oliver Schneider
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