[GeoNetwork-devel] Using regex in search

GeoNetwork GeoNetwork Developer
1

Hello all,

Is there a way of using regular expression in Lucen search?

For example I might be looking for the following codes (uuid):
urn:x-wmo:md:int.wmo.wis::USTH*01*VTBB
or
urn:x-wmo:md:int.wmo.wis::USTH*10*VTBB
or
urn:x-wmo:md:int.wmo.wis::USTH*38*VTBB

In that case I could use a regex such as:
urn:x-wmo:md:int.wmo.wis::USTH*[0-3][0-9]*VTBB

In PostgreSQL it would work using /SIMILAR TO/ operator but what about
Lucene?

Txs in advance,

Mat

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2

hello Mat,

I think it’s possible in Lucene using RegExQuery (see http://lucene.apache.org/core/3_6_0/api/all/org/apache/lucene/search/regex/RegexQuery.html).

However in GeoNetwork this is not used, if that’s what you mean…

Kind regards,
Heikki Doeleman

On Tue, Apr 24, 2012 at 12:06 PM, chOof <mounkye@anonymised.com> wrote:

Hello all,

Is there a way of using regular expression in Lucen search?

For example I might be looking for the following codes (uuid):
urn:x-wmo:md:int.wmo.wis::USTH01VTBB
or
urn:x-wmo:md:int.wmo.wis::USTH10VTBB
or
urn:x-wmo:md:int.wmo.wis::USTH38VTBB

In that case I could use a regex such as:
urn:x-wmo:md:int.wmo.wis::USTH*[0-3][0-9]*VTBB

In PostgreSQL it would work using /SIMILAR TO/ operator but what about
Lucene?

Txs in advance,

Mat

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3

Hello Heikki,

Yes that's what I meant.
I guess I could add a new condition 'RegExQuery' in LuceneSearcher using
this RegExQuery in that case.

Thanks,
Mat

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