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From "Tim Smith (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENE-1825) AttributeSource.getAttribute() should throw better IllegalArgumentException
Date Thu, 20 Aug 2009 15:54:14 GMT
AttributeSource.getAttribute() should throw better IllegalArgumentException
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                 Key: LUCENE-1825
                 URL: https://issues.apache.org/jira/browse/LUCENE-1825
             Project: Lucene - Java
          Issue Type: Improvement
          Components: Analysis
    Affects Versions: 2.9
            Reporter: Tim Smith
            Priority: Minor


when seting "use only new API" for TokenStream, i received the following exception:

{code}
   [junit] Caused by: java.lang.IllegalArgumentException: This AttributeSource does not have
the attribute 'interface org.apache.lucene.analysis.tokenattributes.TermAttribute'.
    [junit] 	at org.apache.lucene.util.AttributeSource.getAttribute(AttributeSource.java:249)
    [junit] 	at org.apache.lucene.index.TermsHashPerField.start(TermsHashPerField.java:252)
    [junit] 	at org.apache.lucene.index.DocInverterPerField.processFields(DocInverterPerField.java:145)
    [junit] 	at org.apache.lucene.index.DocFieldProcessorPerThread.processDocument(DocFieldProcessorPerThread.java:244)
    [junit] 	at org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:772)
    [junit] 	at org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:755)
    [junit] 	at org.apache.lucene.index.IndexWriter.updateDocument(IndexWriter.java:2613)
{code}

However, i can't actually see the culprit that caused this exception

suggest that the IllegalArgumentException include "getClass().getName()" in order to be able
to identify which TokenStream implementation actually caused this


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