Cannot download layers from maps view

[Daniele Viganò]

The layers download from a map doesn't work (http://oq-platform/maps/23/download). An error is triggered by geoserver:

24 Nov 15:48:17 WARN [batchdownload.shp] - Error while writing featuretype 'ghec_viewer_measure' to shapefile.
java.io.IOException: Current fid index is null, next must be called before write()
        at org.geotools.data.shapefile.fid.IndexedFidWriter.write(IndexedFidWriter.java:253)
        at org.geotools.data.shapefile.IndexedShapefileFeatureWriter.write(IndexedShapefileFeatureWriter.java:95)
        at org.geotools.data.shapefile.ShapefileFeatureWriter.close(ShapefileFeatureWriter.java:220)
        at org.geotools.data.shapefile.IndexedShapefileFeatureWriter.close(IndexedShapefileFeatureWriter.java:103)
        at org.geotools.data.InProcessLockingManager$1.close(InProcessLockingManager.java:350)
        at org.geonode.process.batchdownload.shp.ShapeZipWriter.writeCollectionToShapefile(ShapeZipWriter.java:254)
        at org.geonode.process.batchdownload.shp.ShapeZipWriter.doWrite(ShapeZipWriter.java:184)
        at org.geonode.process.batchdownload.shp.ShapeZipWriter.write(ShapeZipWriter.java:125)
        at org.geonode.process.batchdownload.BatchDownload.zipVectorLayer(BatchDownload.java:294)
        at org.geonode.process.batchdownload.BatchDownload.zipLayer(BatchDownload.java:262)
        at org.geonode.process.batchdownload.BatchDownload.zipLayers(BatchDownload.java:232)
        at org.geonode.process.batchdownload.BatchDownload.buildZippFile(BatchDownload.java:129)
        at org.geonode.process.batchdownload.BatchDownload.executeInternal(BatchDownload.java:78)
        at org.geonode.process.control.AsyncProcess.execute(AsyncProcess.java:62)
        at org.geotools.process.ProgressTask$Synchronizer.innerRun(ProgressTask.java:302)
        at org.geotools.process.ProgressTask.run(ProgressTask.java:121)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:701)

This is the returned value in browser inspector:

{"process":{"id":7,"status":"FAILED","progress":0,"reasonForFailure":"java.io.IOException: Current fid index is null, next must be called before write()"}}

[Daniele Viganò (daniele-vigano)]

This feature works with icebox generated maps. We need to check if the problem is related to our layers.

[Daniele Viganò (daniele-vigano)]

Some experiments

- Created a new map with one of our layers
- Download -> NOT WORKING

- Exported one layer as SHP (from layer app)
- Uploaded the saved SHP using the layer upload form
- Created a map with this new layer
- Download -> WORKS

There's something wrong in our layers...

[Daniele Viganò (daniele-vigano)]

Looks related to the "the_geom" column position in the table: https://groups.google.com/forum/#!msg/geoscript/8XQQClbSt9E/ThgV1j5DtxkJ

fid | the_geom | ... | ... | ... WORKS
fid | ... | ... | ... | the_geom DOES NOT WORK

In our DB, after the installation we have the_geom as last column (looks a Django problem)

[Daniele Viganò (daniele-vigano)]

Fixed in https://github.com/gem/oq-platform/pull/280