How to merge 2 part of two different Domdocument

Question

Hi,
I try to copy on subtree from a first DOMdocument to a second DOMDocument and I receive a java null pointer exception. How can I copy one part of a DOM to another ?
CREATE OR REPLACE PROCEDURE testDom IS
BufferString VARCHAR2(32767) := '<TEST>test to add</TEST>';
BufferToAdd VARCHAR2(32767) := '<ADDED>Added</ADDED>';
CurrDoc XMLDOM.DomDocument;
BuffDoc XMLDOM.DomDocument;
CurrDocNode XMLDOM.DomNode;
ToAddNode XMLDOM.DomNode;
ToAddTextNode XMLDOM.DomNode;
ResultString VARCHAR2(32767);
IntermediateString VARCHAR2(32767);
BEGIN
CurrDoc := XMLDOM.NewDOMDocument;
CurrDocNode := XMLDOM.MakeNode(CurrDoc);
CurrDocNode := XMLDOM.AppendChild(CurrDocNode,XMLDOM.MakeNode(XMLDOM.CreateElement(CurrDoc,'AddedTag')));
CurrDocNode := XMLDOM.AppendChild(CurrDocNode,XMLDOM.MakeNode(XMLDOM.CreateTextNode(CurrDoc,'Add')));
BuffDoc := XML.parse(BufferString);
ToAddNode := XMLDOM.CloneNode(XSLPROCESSOR.SelectSingleNode(XMLDOM.MakeNode(BuffDoc),'/TEST'),TRUE);
CurrDocNode := XMLDOM.AppendChild(CurrDocNode,ToAddNode);
XMLDOM.WriteToBuffer(CurrDoc, IntermediateString);
XMLDOM.WriteToBuffer(BuffDoc,ResultString);
DBMS_OUTPUT.PUT_LINE('IntermediateDoc '||IntermediateString);
DBMS_OUTPUT.PUT_LINE('Result '||ResultString);
XMLDOM.FreeDocument(CurrDoc);
XMLDOM.FreeDocument(BuffDoc);
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE(SQLERRM);
END testdom;
sho errors

Answer 1

You should use importNode().