On Fri, Dec 9, 2016 at 9:26 AM, Robert Coup <[email protected]>
wrote:
> Hi Andrea,
>
> On 8 December 2016 at 10:00, Andrea Aime <[email protected]>
> wrote:
>
>> At least the WMS capabilites document generator needs to know if a
>> certain layer is geometryless or not, that at the moment can only be
>> done by grabbing the schema, which requires opening a connection. If you
>> have interest in this, you could explore an option to mark geometryless
>> layers on creation/modification, however, that would still fail if a layer
>> with geometry becomes geometryless later (as a result of a database
>> change for example).
>>
>
> Fundamentally most things don't change most of the time, so wouldn't
> saving it at creation/modification be a better approach in general? For WFS
> the same thing effectively happens where Geoserver saves the DB fields/etc
> against the FeatureType definition...
>
Except that it does not, they are always retrieved "sort of fresh", what
you see in the REST calls is coming from an in memory cache of feature
types held in the ResourcePool, the same that
the WMS generator uses to determine if something is geometryless or not.
It's just that a caps generation tends to thrash the cache (same does an
unqualified
DescribeFeatureType), to avoid it one can set a higher value for the
"feature type cache":
http://docs.geoserver.org/stable/en/user/configuration/globalsettings.html#feature-type-cache-size
Btw, legacy featuretype.xml still carry the attribute list (like the ones
we have in our release directory), but the ones created
in the last few years should not instead. I believe nowadays if you
actually manually set that list, it will be treated as an way to
filter the actual underlying attributes (e.g., if an attribute is not in
that list, it's not visible)... and I believe the only way to
actually set that list is to use the REST API.
Cheers
Andrea
--
==
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Ing. Andrea Aime
@geowolf
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