NPE in StopFilter caused by StandardAnalyzer(boolean replaceInvalidAcronym)
constructor
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Key: LUCENE-1140
URL: https://issues.apache.org/jira/browse/LUCENE-1140
Project: Lucene - Java
Issue Type: Bug
Components: Analysis
Affects Versions: 2.3
Reporter: Alexei Dets
I think that I found a problem with the new code
(https://issues.apache.org/jira/browse/LUCENE-1068).
Usage of the new constructor StandardAnalyzer(boolean replaceInvalidAcronym)
causes NPE in
StopFilter:
java.lang.NullPointerException
at org.apache.lucene.analysis.StopFilter.<init>(StopFilter.java:74)
at org.apache.lucene.analysis.StopFilter.<init>(StopFilter.java:86)
at
org.apache.lucene.analysis.standard.StandardAnalyzer.tokenStream(StandardAnalyzer.java:151)
at
org.apache.lucene.queryParser.QueryParser.getFieldQuery(QueryParser.java:452)
at
org.apache.lucene.queryParser.QueryParser.Term(QueryParser.java:1133)
at
org.apache.lucene.queryParser.QueryParser.Clause(QueryParser.java:1020)
at
org.apache.lucene.queryParser.QueryParser.Query(QueryParser.java:948)
at
org.apache.lucene.queryParser.QueryParser.Clause(QueryParser.java:1024)
at
org.apache.lucene.queryParser.QueryParser.Query(QueryParser.java:948)
at
org.apache.lucene.queryParser.QueryParser.TopLevelQuery(QueryParser.java:937)
at
org.apache.lucene.queryParser.QueryParser.parse(QueryParser.java:147)
The reason is that new constructor forgets to initialize the stopSet field:
public StandardAnalyzer(boolean replaceInvalidAcronym) {
this.replaceInvalidAcronym = replaceInvalidAcronym;
}
I guess this should be changed to something like this:
public StandardAnalyzer(boolean replaceInvalidAcronym) {
this(STOP_WORDS);
this.replaceInvalidAcronym = replaceInvalidAcronym;
}
The bug is present in RC3. Fix is one line, it'll be great to have it in 2.3
release.
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