Integration

Sorry if I'm being really stupid (I try and avoid Java-ish RegEx, and mainly use Perl for that sort of stuff), but I've hit on a problem that's really bugging me.

I've got an XQuery resource in an OSB pipeline that uses a function I've written, the meat of which is extracting t-l-v data (NAME;[number];VALUE;NAME;[number];VALUE;...) as so:

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if ($arg != '' and $name != '' and matches($arg, concat('.*;', $name, ';[0-9]+;')))
then substring(normalize-space(substring-before(replace($arg, concat('.*;', $name, ';[0-9]+;'), ''), ';')), 1, 64)
else ''

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It works about 50% of the time, and presumably fails on bigger strings, given the massive org.apache.xmlbeans.impl.regex.RegularExpression.matchString recursive stack trace.

The thing is, it sometimes fails on an $arg input that it's previously been happy with, so I guess it's just running out of memory dependent on what else is happening at the time, so this points to an inefficient expression as opposed to one that doesn't work.

The thing is, I can't see a better way to define it than matching .*NAME;\d+; - especially given that XQuery and/or OSB seems to be fairly limited (\d didn't actually work, hence [0-9] in my code)...unless I'm missing something obvious.

Any ideas?