On Thu, Mar 19, 2015 at 6:24 PM, emmexx <[email protected]> wrote:
> Il 03/19/2015 04:16 PM, Andrea Aime scrisse:
> > No, there is no way to use general regular expression against databases,
> > strMatches uses
> > the Java regex syntax,
>
> What do you mean?
> I use strMatches in sld against a postgis database field, something like:
>
> <ogc:PropertyIsEqualTo>
> <ogc:Function name="strMatches">
> <ogc:PropertyName>mypostgisfield</ogc:PropertyName>
> <ogc:Literal>.*\b(1|32|56)\b.*</ogc:Literal>
> </ogc:Function>
> <ogc:Literal>true</ogc:Literal>
> </ogc:PropertyIsEqualTo>
>
> Do you mean that postgresql regex has a different syntax that can't be
> used in strMatches?
>
>
It means that with the current setup strMatches is evaluated fully in
memory after loading
the data from the database, not encoded in sql (which would be more
efficient, but requires
some work, while most of the regex syntax between java and postgresql is
probably symilar, not all of it is)
Even just postgresql seems to have three different syntaxes for regular
expressions: http://www.regular-expressions.info/postgresql.html
Cheers
Andrea
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