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Posted to dev@lucene.apache.org by "Michael McCandless (Commented) (JIRA)" <ji...@apache.org> on 2012/03/31 12:30:32 UTC
[jira] [Commented] (LUCENE-3939) ClassCastException thrown in the
map(String,int,TermVectorOffsetInfo[],int[]) method in
org.apache.lucene.index.SortedTermVectorMapper
[ https://issues.apache.org/jira/browse/LUCENE-3939?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13243108#comment-13243108 ]
Michael McCandless commented on LUCENE-3939:
--------------------------------------------
I'm confused on how something's that not a TermVectorEntry can get into the termToTVE map... can you post a small test case showing this problem?
> ClassCastException thrown in the map(String,int,TermVectorOffsetInfo[],int[]) method in org.apache.lucene.index.SortedTermVectorMapper
> --------------------------------------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-3939
> URL: https://issues.apache.org/jira/browse/LUCENE-3939
> Project: Lucene - Java
> Issue Type: Bug
> Components: core/index
> Affects Versions: 3.0.2, 3.1, 3.4, 3.5
> Reporter: SHIN HWEI TAN
> Original Estimate: 0.05h
> Remaining Estimate: 0.05h
>
> The method "map" in the "SortedTermVectorMapper" class does not check the parameter "term" for the valid values. It throws ClassCastException when called with a invalid string for the parameter "term" (i.e., "var3.map("*", (-1), null, null)"). The exception thrown is due to an explict cast(i.e., casting the return value of termToTVE.get(term) to type "TermVectorEntry").
> Suggested Fixes: Replace the beginning of the method body for the class "SortedTermVectorMapper" by changing it like this:
> public void map(String term, int frequency, TermVectorOffsetInfo[] offsets, int[] positions) {
> if(termToTVE.get(term) instanceof TermVectorEntry){
> TermVectorEntry entry = (TermVectorEntry) termToTVE.get(term);
> ...
> }
> }
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