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Posted to dev@lucene.apache.org by "SHIN HWEI TAN (Commented) (JIRA)" <ji...@apache.org> on 2012/04/01 01:40:26 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=13243607#comment-13243607 ]
SHIN HWEI TAN commented on LUCENE-3939:
---------------------------------------
Thanks for the quick response.
I don't think that passing null as Comparator is the problem. For example, if the first invocation of the method "map" is commented out(as below), then there is no exception thrown. In this case, the Comparator is still null.
org.apache.lucene.index.SortedTermVectorMapper var3 = new org.apache.lucene.index.SortedTermVectorMapper(false, false,(java.util.Comparator)null);
var3.setExpectations("", 0, false, false);
var3.map("*:", (-1), (org.apache.lucene.index.TermVectorOffsetInfo[])null, (int[])null);
> 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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