I'm using jre 1.4.1. I have an xsp which captures a fragment of xml, and
passes it to a class:
<capture:fragment-variable name="frag">
<foo><bar/></foo>
</capture:fragment-variable>
<xsp:logic>
MyClass.doSomething(frag);
</xsp:logic>
This passes an XMLFragment which I convert to a node:
public class MyClass {
public static void doSomething(XMLFragment frag){
Node node = frag2Node(frag);
...
}
public Node frag2Node(XMLFragment frag){
Document doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDo
cument();
Node dummy = doc.createElement("dummy");
doc.appendChild(dummy);
frag.toDOM(dummy);
return dummy.getFirstChild();
}
When Cocoon runs, I get an exception in the call to frag.toDOM(dummy)
It is a null pointer exception
java.lang.NullPointerException
at org.apache.xalan.transformer.TransformerIdentityImpl.flushStartDoc(T
ransformerIdentityImpl.java:885)
at org.apache.xalan.transformer.TransformerIdentityImpl.startElement(Tr
ansformerIdentityImpl.java:1016)
at org.apache.cocoon.xml.AbstractXMLPipe.startElement(AbstractXMLPipe.j
ava:130)
at org.apache.cocoon.xml.AbstractXMLPipe.startElement(AbstractXMLPipe.j
ava:130)
at org.apache.cocoon.components.sax.XMLByteStreamInterpreter.parse(XMLB
yteStreamInterpreter.java:126)
at org.apache.cocoon.components.sax.XMLByteStreamInterpreter.deserializ
e(XMLByteStreamInterpreter.java:102)
at org.apache.cocoon.components.sax.XMLByteStreamFragment.toSAX(XMLByte
StreamFragment.java:100)
at org.apache.cocoon.xml.AbstractSAXFragment.toDOM(AbstractSAXFragment.
java:76)
Can anyone see what the problem is - I've searched in vain!
Alternatively, is there a more elegant way of converting the XMLFragment
passed by Cocoon as a parameter into a DOM node?!
Robert Onslow
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