FilterCapabilities conflict when simultaneously working with different
DataStore types (caused by static field)
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Key: GEOT-848
URL: http://jira.codehaus.org/browse/GEOT-848
Project: GeoTools
Type: Bug
Components: main
Versions: 2.2-RC2
Reporter: Markus Gebhard
Assigned to: James Macgill
Priority: Critical
Steps to reproduce the problem:
- Open an Oracle datastore and read features using a GeometryFilter
- Open an ArcSDE datastore and read features using a GeometryFilter
- You will run into this exception:
Caused by: java.lang.RuntimeException: Subclasses must implement this method in
order to handle geometries
at org.geotools.filter.SQLEncoder.visit(SQLEncoder.java:585)
at
org.geotools.filter.GeometryFilterImpl.accept(GeometryFilterImpl.java:354)
at org.geotools.filter.SQLEncoderSDE.encode(SQLEncoderSDE.java:123)
at org.geotools.filter.SQLEncoder.encode(SQLEncoder.java:236)
at
org.geotools.data.arcsde.ArcSDEQuery$FilterSet.getSeSqlConstruct(ArcSDEQuery.java:958)
at
org.geotools.data.arcsde.ArcSDEQuery.createSeQueryForFetch(ArcSDEQuery.java:320)
at org.geotools.data.arcsde.ArcSDEQuery.getSeQuery(ArcSDEQuery.java:271)
at org.geotools.data.arcsde.ArcSDEQuery.execute(ArcSDEQuery.java:643)
at
org.geotools.data.arcsde.ArcSDEDataStore.getFeatureReader(ArcSDEDataStore.java:567)
The reason for this problem is the static field 'capabilities' in
org.geotools.filter.SQLEncoder. By reading Oracle Spatial features, it is being
filled with Oracle Spatial specific capabilities. When reading ArcSDE features
afterwards, the field is already initialized and will not be changed. So
reading ArcSDE features uses Oracle Spatail capabilities and fails.
Suggested fix:
Make the field 'capabilities' in org.geotools.filter.SQLEncoder.non-static.
So for each instance the correct capabilities will be used.
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