I like that idea, it would be especially nice if we could include the
complete function signature (with function argument names) as they will
provide a clue about use).
So something like "Provided arguments do not match function
Recode(LookupValue, Data1, Value1, Data2, Value2, ...)" where the "..." can
indicate a variable number of arguments)
On a related note I updated our docs with a generated function list here:
- http://docs.geotools.org/latest/userguide/library/main/function_list.html
--
Jody Garnett
On 27 December 2014 at 12:47, Andrea Aime <[email protected]>
wrote:
> Hi,
> when looking up existing functions with wrong argument sets (wrong number
> of input, internal
> validation during constructions) our current code just comes up and says
> "function X does not exists",
> because we don't have an instance with that name and that set of arguments.
>
> Point in case:
>
> <ogc:Function name="Recode">
> <ogc:PropertyName>myfield2</ogc:PropertyName>
> <!-- Map of input to output values -->
> <ogc:Literal>1</ogc:Literal>
> <ogc:Literal>#035a23</ogc:Literal>
> <ogc:Literal>2</ogc:Literal>
> <ogc:Literal>#035a23</ogc:Literal>
> <ogc:Literal>3</ogc:Literal>
> <ogc:Literal>#035a23</ogc:Literal>
> * <ogc:Literal>8</ogc:Literal>*
> * <ogc:Literal>6</ogc:Literal>*
> <ogc:Literal>#4daf7e</ogc:Literal>
> <ogc:Literal>4</ogc:Literal>
> <ogc:Literal>#4daf7e</ogc:Literal>
> <ogc:Literal>7</ogc:Literal>
> <ogc:Literal>#7a1364</ogc:Literal>
> <ogc:Literal>5</ogc:Literal>
> <ogc:Literal>#fecf03</ogc:Literal>
> <ogc:Literal>0</ogc:Literal>
> <ogc:Literal>#888888</ogc:Literal>
> </ogc:Function>
>
> The association table is missing a value and the error message we get is
> "function Recode
> does not exist".
>
> A better error message would probably be "we have function Recode, but not
> with this argument
> set", and in particular Recode has thrown an error during constrution, it
> would be nice to report
> it as it's explicative of the error (right now it's only logged, and only
> at fine leve).
>
> Ideas?
>
> Cheers
> Andrea
>
> --
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