Joins on File Geodatabase Tables lead to errors and unexpected behaviour

[thorsten-reitz]

Joining multiple tables of a File Geodatabase can lead to unexpected behaviour for all fields that have the same local name in the joined types. Typical errors include:

• Multiple Values for Source node without transformation context match
• Error performing Property transformations (with an NPE stacktrace; see below)

Viewing the properties of an entity in a FGDB schema shows that it does not have a namespace, so maybe one needs to be included.

Stacktrace:

java.lang.NullPointerException
	at eu.esdihumboldt.hale.common.align.model.transformation.tree.visitor.InstanceVisitor.visit(InstanceVisitor.java:142)
	at eu.esdihumboldt.hale.common.align.model.transformation.tree.impl.SourceNodeImpl.accept(SourceNodeImpl.java:167)
	at eu.esdihumboldt.hale.common.align.model.transformation.tree.impl.TransformationTreeImpl.accept(TransformationTreeImpl.java:136)
	at eu.esdihumboldt.cst.internal.TreePropertyTransformer$2.run(TreePropertyTransformer.java:198)
	at eu.esdihumboldt.cst.internal.TreePropertyTransformer.publish(TreePropertyTransformer.java:250)
	at eu.esdihumboldt.cst.functions.groovy.GroovyRetype.execute(GroovyRetype.java:64)
	at eu.esdihumboldt.cst.ConceptualSchemaTransformer.doTypeTransformation(ConceptualSchemaTransformer.java:324)
	at eu.esdihumboldt.cst.ConceptualSchemaTransformer.transform(ConceptualSchemaTransformer.java:154)
	at eu.esdihumboldt.hale.ui.service.instance.internal.orient.OrientInstanceService$5.run(OrientInstanceService.java:464)
	at eu.esdihumboldt.hale.ui.util.io.ThreadProgressMonitor$1.run(ThreadProgressMonitor.java:121)
	at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119)

[thorsten-reitz]

Addendum: The stated exception happens also for joins on other types of data sources. There is no specific FGDB issue at hand.

[Kate-Lyndegaard]

@thorsten-reitz Can you provide an example test case for this issue, including transfo and data?

[github-actions[bot]]

This issue has been automatically marked as stale because it has not had activity in the last 60 days. It will be closed in two weeks if no further activity occurs. Thank you for your contributions.

[github-actions[bot]]

This issue has been automatically closed due to inactivity. If it is still valid, please post a comment.