10 Commits

Author SHA1 Message Date
Nyall Dawson
6aa10c6817 [processing] Cleanup some layer/writer related handling
Ensure that layers created by QgsProcessingUtils::createFeatureSink
can always be retrieved using QgsProcessingUtils::mapLayerFromString
2017-05-09 15:29:41 +10:00
Nyall Dawson
06c4dea7ff [processing] Remove vector.createVectorWriter
Use QgsProcessingUtils.createFeatureSink instead
2017-05-07 08:02:54 +10:00
Nyall Dawson
877775d2c0 Remove a bunch of unneeded imports 2017-05-02 14:47:58 +10:00
Nyall Dawson
49c688bbe4 Fix use of QgsProcessingUtils.mapLayerFromString 2017-05-02 13:40:49 +10:00
Nyall Dawson
f84d703234 Add method QgsProcessingUtils::mapLayerFromString
Algorithms and other processing code should use this method
(instead of dataobjects.getLayerFromString) to
retrieve layers from a string, as it considers the processing
context and allows resolving strings to temporarily stored layers.

This permits processing models to function correctly when
intermediate results are stored as memory layers. Subsequent
model algorithms can then access these temporary layers as inputs.
All temporary layers will be removed when the context object
is destroyed after the model algorithm is run.
2017-05-02 12:33:04 +10:00
Nyall Dawson
fd2c18ee16 Refactor processing writer to use QgsFeatureSink, and to store
temporary output layers in the provided processing context

Should fix loss of intermediate memory layers when running
a multi-step model
2017-04-26 17:38:40 +10:00
Nyall Dawson
845027d0a3 Fix failing tests 2017-04-26 12:53:35 +10:00
Nyall Dawson
377b181c4e Port more processing dataobjects methods to c++
Also
- simplify and add tests
- remove large memory leak (persistant store of all non-project layers)
- remove broken support for direct loading postgres/virtual layers
by string (Python version was very broken and would never match
a postgres/virtual layer)
2017-04-05 19:50:46 +10:00
Alexander Bruy
a70e73cd74 minor script fixes 2017-03-16 17:48:39 +02:00
Alexander Bruy
c603df1aa8 [processing] allow tests for scripts 2017-03-16 17:48:39 +02:00