+1 for me. A good feature IMO. I think so of the UI needs work but that is easy enough to do after merge.
On Wed, 1 Jul 2015 6:17 pm Hugo Mercier <[email protected]> wrote: > Hi all, > > Probably not the perfect timing, but anyway, I would like to move > forward on that topic of virtual layers. > > The current implementation has already some use cases. It is not as > integrated into the expression engine as we might want, but it offers > possibilities that were hard to achieve before. > > It consists merely of a new vector data provider. It does not depend on > particular modifications in QGIS. So the impact on the current API is > null. There will be some glue code in the app part of course, > but apart from that, I think including it into the core as just another > data provider won't bother other possible future implementations around > this concept. And it will serve as a functional prototype. > > We may want to tag it as experimental or something like this, saying > that this is probably not the final (or the only) way QGIS will handle > the concept of "virtual layers" in the future. > > And because it is only a data provider (... and a class in DBManager), > people may choose not to ship it with their binary version of QGIS if > they don't want to. > > So ... is there any objection against that being pushed as a new vector > data provider for the 2.12 ? > > On 11/05/2015 16:11, Hugo Mercier wrote: > > Hi all, > > > > I've been recently involved in the development of "virtual layers" for > > QGIS. The topic has already been discussed previously. In a few words it > > allows to craft SQL queries (with spatial support) on any vector > > layer(s) that QGIS is able to load. > > > > Now I have a plugin that is usuable and allows you to get familiar with > > the concept and test it. > > > > More details are given here (with links to some videos): > > https://github.com/mhugo/qgis_vlayers > > > > A binary version of the plugins for Windows 32bits is available here : > > http://91.121.102.10/vlayers/qgis_28_vlayers_4_win32.zip > > > > An integration of virtual layers in db manager is provided, but it is > > better served with an improved version of db manager. A pull request > > about this is being reviewed (https://github.com/qgis/QGIS/pull/2025). > > You can also directly find it here : > > > http://91.121.102.10/vlayers/db_manager_with_query_builder_and_vlayers.zip > > > > Please do not hesitate to test this new functionality and report bugs or > > requests (here or on the github page) > > > > Now the next step would be to lead toward a proper integration into QGIS > > core. I am already aware of some limitations that I have listed. I would > > be happy to have any other feedback. > > > > The hackfest next week could also be a good place to discuss it (I will > > be presenting it during the conference) > > > > Cheers. > > Hugo > > _______________________________________________ > > Qgis-developer mailing list > > [email protected] > > http://lists.osgeo.org/mailman/listinfo/qgis-developer > > > > > > _______________________________________________ > Qgis-developer mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-developer >
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