[mapserver-dev] Make wms layer groups requestable

Wed Dec 20 04:56:51 PST 2017

Hi,

There is a real need to make it possible to advertise group layers which have a name as <Layer queryable="1">. There are many clients which do not enable GetFeatureInfo tool otherwise.

There may be some corner cases when it would be nice to have also a possibility to have groups with title but no name as so called “containing categories”. But I consider that loosing containing categories is a little loss compared to a win that comes with queryable layer groups.

-Jukka Rahkonen-

Lähettäjä: mapserver-dev [mailto:mapserver-dev-bounces at lists.osgeo.org] Puolesta Yves Jacolin
Lähetetty: 20. joulukuuta 2017 11:09
Vastaanottaja: mapserver-dev List <mapserver-dev at lists.osgeo.org>
Aihe: [mapserver-dev] Make wms layer groups requestable

Hello,
1 year ago Thomas Bonfort worked on a PR to make WMS Layer groups (defined with wms_layer_groups Layer Metadata items) to be requestable.
That's mean that if a Layer has wms_layer_group=/group1/group2 then group1 can be requested i GetMap request. This is the same behaviour as GROUP excep that GROUP can have only one group level. This change means that GROUP could be seen as deprecated.
I worked on a PR for documentation [2]  and I think MIGRATION_GUIDE doesn't need to be adapted. I worked on a new branch from a newer master branch and cherry-pick the 3 commits from Thomas Bonfort branch.
My question is what developpers and PSC think about this? We (Camptocamp) would like to see this merged in the MapServer code base and are ready to help if changes are needed. If you agree we can close the Thomas PR and open a new one from my new branch.
Thanks for your feedback.
Y.
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