hello,
I am having more and more problems with having multiple modifications on
a Datastore.
Actually I am stuck when I try to render and edit geometry.
The fact is I can't find a way be be sure the datastore is not used
be trying to edit/render.
I spend a complete afternoon trying to avoid each one to acces the datastore
at the same time, I have no control and no way to know if the renderer is using
it or not.
I tryed "synchronized" stuff, or even using a kind of "lock" (with a boolean at
true if used)
...
but no... It works a few seconds and randomly it raise a
java.util.ConcurrentModificationException.
I can't finish the editableMap2D will this problem isn't solved.
In this case I only have two possible objects using the datastore... but in the
futur there is high probability that some more will try to access a datastore
at the same time.
the full error :
java.util.ConcurrentModificationException
at
java.util.LinkedHashMap$LinkedHashIterator.nextEntry(LinkedHashMap.java:373)
at java.util.LinkedHashMap$ValueIterator.next(LinkedHashMap.java:388)
at
org.geotools.data.memory.MemoryDataStore$1.next(MemoryDataStore.java:382)
at
org.geotools.data.FilteringFeatureReader.hasNext(FilteringFeatureReader.java:125)
at
org.geotools.data.store.FeatureReaderIterator.hasNext(FeatureReaderIterator.java:44)
at
org.geotools.renderer.lite.StreamingRenderer.processStylers(StreamingRenderer.java:1596)
at
org.geotools.renderer.lite.StreamingRenderer.paint(StreamingRenderer.java:647)
at
org.geotools.renderer.shape.ShapefileRenderer.renderWithStreamingRenderer(ShapefileRenderer.java:1454)
at
org.geotools.renderer.shape.ShapefileRenderer.paint(ShapefileRenderer.java:1325)
at
org.geotools.renderer.shape.ShapefileRenderer.paint(ShapefileRenderer.java:266)
at
org.geotools.renderer.shape.ShapefileRenderer.paint(ShapefileRenderer.java:1479)
at
org.geotools.gui.swing.map.map2d.strategy.SingleBufferedImageStrategy.createBufferImage(SingleBufferedImageStrategy.java:299)
at
org.geotools.gui.swing.map.map2d.strategy.SingleBufferedImageStrategy$DrawingThread.run(SingleBufferedImageStrategy.java:459)
johann sorel
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