Java as PG Procedural Language

Hi

I'd like to write a function that parses XML (which is stored in a table
column), returning element values as part of the recordset. For example:

SELECT id, title, XML2Columns(article_xml)
FROM mytable

I don't have a hope of writing something like this in C or Perl, but I could
do it in Java, using Xerces. Has anyone successfully used Java as a
Procedural Language for PostGreSQL? Or is it possible that a function like
this exists already?

Many thanks

Tom
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tom dyson
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