Hi, Andreas, thanks for your help. We tried the built-in relation support, combined with the edit widgets and form view. Is that what you mean? Powerful features as they are, they don’t fit our needs, however. There are quite a few tables, with two-level relationships; the generated forms and the workflow using the built-in solution is still too complex for our digitizers daily work. We also had doubts regarding to how to handle referential integrity constraints in edit mode. That’s why we finally decided to build our own plugin. In any case, I have taken a look at it again; it feels somewhat slower than our solution when not editing, and roughly the same in edit mode (no measures, though, just my first subjective impressions).
De: Neumann, Andreas [mailto:[email protected]] Enviado el: viernes, 08 de abril de 2016 16:02 Para: Manuel Hernández Martínez CC: '[email protected]' Asunto: Re: [Qgis-developer] PostGIS queries slow when in edit mode Hi Manuel, QGIS already has built-in relation support (1:n and n:m) - they should support server side queries. Do you really need to write your own plugin? Are the built-in relations not good enough? Andreas On 2016-04-08 15:26, Manuel Hernández Martínez wrote: Hi! I'm developing a plugin for QGIS. When the user selects a feature, it queries a few other layers from Postgis to fill in a form with related data. The queries are slow, unless I check the option to run queries server-side. After that, the queries run instantaneously. Yay! However, if the layers are put in edit mode, the queries are slow again! :( After checking the Postgis logs it seems that the run queries server-side option has no effect when the layers are in edit mode. Does anyone know whether it is a known, well-founded limitation or a bug? Regards, Manuel ________________________________ Manuel Hernández Martínez [email protected]<mailto:[email protected]> Agencia de Medio Ambiente y Agua de Andalucía. http://www.agenciamedioambienteyagua.es<http://www.agenciamedioambienteyagua.es/> Subdirección de Tecnologías de la Información. Red de Información Ambiental de Andalucía, REDIAM. Johan G. Gutenberg, 1. Isla de la Cartuja 41092 - SEVILLA, Sevilla. (Spain) Tel: +34 955 26 00 00 / +34 902 52 51 00 Fax: +34 955 04 46 10 En la medida de lo posible, evite imprimir este correo. Este correo electrónico y los documentos que en él se puedan adjuntar, contiene información de carácter confidencial dirigida exclusivamente a su/s destinatario/s. Si Usted no es el destinatario de este mensaje, le ruego que lo destruya sin hacer copia digital o física, comunicando por correo electrónico, fax o teléfono a la Agencia de Medio Ambiente y Agua de Andalucía la recepción del mismo. Así mismo, queda expresamente prohibida su divulgación, copia o distribución a terceros sin la previa autorización escrita de la Agencia de Medio Ambiente y Agua de Andalucía. _______________________________________________ Qgis-developer mailing list [email protected]<mailto:[email protected]> List info: http://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-developer
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