[UIMA-464] ClassCastException thrown when using subiterator and moveTo()

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1
• Fix Version/s: 2.2
• Component/s: Core Java Framework

Environment

N/A

• Assignee: Thilo Goetz
• Reporter: Philip Ogren
• Created: 21/Jun/07 17:21
• Updated: 27/Jun/07 11:55
• Resolved: 27/Jun/07 11:55

Description

I am having difficulty with using the FSIterator returned by the AnnotationIndex.subiterator(AnnotationFS) method.
The following is a code fragment:

AnnotationIndex annotationIndex = jCas.getAnnotationIndex(tokenType);
FSIterator tokenIterator = annotationIndex.subiterator(sentenceAnnotation);
tokenIterator.moveTo(tokenAnnotation);

Here is the relevant portion of the stack trace:

java.lang.ClassCastException: edu.colorado.cslr.dessert.types.Token
at java.util.Collections.indexedBinarySearch(Unknown Source)
at java.util.Collections.binarySearch(Unknown Source)
at org.apache.uima.cas.impl.Subiterator.moveTo(Subiterator.java:224)

If I change the second line to the following, then I do not have any problems with an exception being thrown.

FSIterator tokenIterator = annotationIndex.iterator();