Hi Manuel,
instead of developping a new plugin my plugin DataDrivenInputMask [1]
might suit your needs. It handles all kinds of relations and referential
integrity out of the box (if thoroughly defined in the DB). Tickets,
feedback, feature requests welcome.
Bernhard
[1] http://plugins.qgis.org/plugins/DataDrivenInputMask/
Am 11.04.2016 um 10:30 schrieb Manuel Hernández Martínez:
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
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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.
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Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-developer
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