[mapserver-users] Problems when using complex expressions

Adrian Popa adrian_gh.popa at romtelecom.ro
Tue Jul 21 03:35:12 PDT 2009


Thanks, Andreas,

I've tried your solution (and already looked over the manual) but it 
still doesn't match anything...

Also - EXPRESSION ("[myColumn]" =~ /MYREGEXP/i) doesn't match anything
and EXPRESSION "[myColumn]" =~ /MYREGEXP/i   complains of a syntax error.

myColumn is the exact same thing as what I use in the layer's CLASSITEM 
definition.

I am puzzled... I think I'm using the EXPRESSION syntax the wrong way, 
but I'm not sure what I'm doing wrong.

Regards,
Adrian

Andreas Albarello wrote:
> Adrian Popa wrote:
>> EXPRESSION (/MYREGEXP/i)    -> doesn't work (doesn't match anything)
>> EXPRESSION /MYREGEXP/i      -> works
>> EXPRESSION "[myColumn]" ==1 -> doesn't work (loadClass(): Unknown 
>> identifier. Parsing error near (=))
>> EXPRESSION ("[myColumn]" ==1) -> doesn't work (doesn't match anything)
>> EXPRESSION ("[myColumn]" eq "1") -> works
>>
>> EXPRESSION (/MYREGEXP/i) && ("[myColumn]" eq "1")  -> doesn't work 
>> (doesn't match anything)
>> EXPRESSION /MYREGEXP/i && ("[myColumn]" eq "1")  -> doesn't work 
>> (loadClass(): Unknown identifier. Parsing error near (&))
>> EXPRESSION ((/MYREGEXP/i) && ("[myColumn]" eq "1"))  -> doesn't work 
>> (doesn't match anything)
>>
>> I have checked my data and it should match - most likely, my 
>> expression is wrong. Any suggestions? What is the correct syntax for 
>> mixing regular expressions with other values?
>
> Adrian,
>
> have a look at this: http://mapserver.org/mapfile/expressions.html
>
> As far as mixing regular and other expressions goes, this is the 
> correct way to do it:
>
> EXPRESSION (("[myColumn]" =~ /MYREGEXP/i) && ("[myColumn]" eq "1"))
>
> Best regards,





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