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org.w3c.dom, line number

Posted on 2007-07-30
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Last Modified: 2008-02-01
I have this:
InputStream in = new FileInputStream(fileName);
DocumentBuilderFactory dfactory = DocumentBuilderFactory.newInstance();
Document doc = dfactory.newDocumentBuilder().parse(new InputSource(in));

Given a node belonging to doc,
I would like to know at which line of text (of the file fileName) this node starts.
(I assume I have not modified the document)

Something like
int lineNumber = XmlUtil.getLineNumber(fileName, doc, node);

Are you aware of a xml util package that has this functionality?
(compatible with org.w3c.dom)

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Question by:dportabella
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freeexpert earned 1000 total points
ID: 19594759
i believe your best bet is to use SAX. There is http://xerces.apache.org/xerces2-j/javadocs/xerces2/org/apache/xerces/impl/xs/opti/ElementImpl.html, which has a getLineNumber method. But I you will have to jump hoops to get to it and it is for Element only.
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by:dportabella
ID: 19595071
freeexpert, that could be a solution.
Given the doc and node, the xpath expression could be easily obtained,
and then, parsing the file, the element could be found using the xpath expression.

>it is for Element only
that's ok.

However, I wouldn't like to code this function myself.
I am looking for a xml util package that already implements it.

Are you aware of a xml util package that has this functionality?
(compatible with org.w3c.dom)
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