On Mon, Feb 11, 2013 at 2:25 PM, Rahkonen Jukka
<jukka.rahko...@mmmtike.fi>wrote:
> Hi,****
>
> ** **
>
> There seems to be the same text in both WMS 1.1.1 and 1.3.0 standards****
>
> ** **
>
> “ 7.3.3.5 QUERY_LAYERS****
>
> The required QUERY_LAYERS parameter states the map layer(s) from which
> feature****
>
> information is desired to be retrieved. Its value is a comma-separated
> list of one or more****
>
> map layers. This parameter shall contain at least one layer name, but may
> contain fewer****
>
> layers than the original GetMap request.****
>
> If any layer in this list is not contained in the Capabilities XML of the
> WMS, the results****
>
> are undefined and the WMS shall produce an exception response.”****
>
> ** **
>
> At least it does not explicitly say that QUERY_LAYERS must be a the same
> than LAYERS or a subset of it. Throwing an error here feels unnecessary
> punishment.****
>
> **
>
It finally occurred to me why we need the query_layers to be a subset of
layers: we need the style that was associated
to the layer in order to estimate how big the search buffer is, by doing a
static analysis of the SLD
I guess we could assume the style is the default one in case the layer is
not in the base GetMap request options:
patches welcomed ;-)
Cheers
Andrea
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