[MAPSERVER-USERS] CLASSITEM and EXPRESSION issue in trunk?

[Pål Kristensen]

Hi Steve,

thanks for the quick response! I know about the PostGIS refactoring
activity, and that is one of the things that we wanted to test. For the
overall speed it looks great, but it can be some troublesome if old
expressions don't work. One of our mapfiles is almost 12000 lines (with
quite complex expressions), and I do not intend to change all the
expressions :-). Do you know if anyone has the opportunity to look at this
issue?

Regards,
Pål Kristensen


Steve Lime wrote:
> 
> The PostGIS support underwent major changes recently so I'd suspect this
> is specific
> to that work. Perhaps there are character padding affecting things?
> 
> Steve
> 
>>>> Pål Kristensen <pal.kristensen at statkart.no> 11/21/08 8:36 AM >>>
> 
> Hi!
> 
> I've compiled 5.3-dev from trunk yesterday and got some trouble with
> some
> mapfiles that works well on 5.2. The problem is that the EXPRESSION
> parameter in the CALSS object does not work with direct string
> comparison.
> Her are some examples:
> 
> Does NOT work: (This is the original layer definition from the 5.2
> mapfile)
> 
> LAYER
>    ...
>    CLASSITEM "maxhoyde"
>    ...
>    CLASS
>       NAME "test"
>       EXPRESSION "600"
>       ...
>     END
> END
> 
> 
> Using RegEx instead WORKS:
> 
> LAYER
>    ...
>    CLASSITEM "maxhoyde"
>    ...
>    CLASS
>       NAME "test"
>       EXPRESSION /600/
>       ...
>     END
> END
> 
> 
> Using logical expression WORKS:
> 
> LAYER
>    ...
>    #CLASSITEM "maxhoyde"
>    ...
>    CLASS
>       NAME "test"
>       EXPRESSION ([makshoyde] == 600)
>       ...
>     END
> END
> 
> The data is stored in PostgreSQL (PostGIS), and the actual field type is
> character(5). Anyone have a clue about what is causing this strange
> behavior. 
> 
> Regards,
> Pål Kristensen
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