Julie Tibshirani created LUCENE-8288:
----------------------------------------
Summary: ContextQuery "." for RegexCompletionQuery produces an
assertion failure
Key: LUCENE-8288
URL: https://issues.apache.org/jira/browse/LUCENE-8288
Project: Lucene - Core
Issue Type: Bug
Reporter: Julie Tibshirani
When a RegexCompletionQuery of "." is provided to ContextQuery, the following
assertion failure occurs:
{code:java}
java.lang.AssertionError: input should not end with a context separator
followed by SEP_LABEL
at
org.apache.lucene.search.suggest.document.ContextQuery$ContextCompletionWeight.setInnerWeight(ContextQuery.java:299)
at
org.apache.lucene.search.suggest.document.ContextQuery$ContextCompletionWeight.setNextMatch(ContextQuery.java:275)
at
org.apache.lucene.search.suggest.document.NRTSuggester.lookup(NRTSuggester.java:221)
at
org.apache.lucene.search.suggest.document.CompletionScorer.score(CompletionScorer.java:70)
at org.apache.lucene.search.BulkScorer.score(BulkScorer.java:39)
at
org.apache.lucene.search.suggest.document.SuggestIndexSearcher.suggest(SuggestIndexSearcher.java:78)
at
org.apache.lucene.search.suggest.document.SuggestIndexSearcher.suggest(SuggestIndexSearcher.java:58)
at
org.apache.lucene.search.suggest.document.TestContextQuery.testDotRegexQuery(TestContextQuery.java:188)
{code}
Note that this is a related, but distinct issue from
https://issues.apache.org/jira/browse/LUCENE-8287, where the
RegexCompletionQuery is empty.
The attached patch provides a reproduction of the issue, as the test case
TestContextQuery#testRegexDotQuery. To reproduce, Java assertions must be
enabled (as in the default configuration for tests).
The patch also provides a test case for the normal behavior of an empty
RegexCompletionQuery, when it is not wrapped in ContextQuery
(TestRegexCompletionQuery#testRegexDotQuery). In this case, there is no error,
and all suggestions are returned.
>From a quick look, it seems as though "." doesn't capture any characters past
>CompletionAnalyzer.SEP_LABEL, so the matching prefix in
>ContextCompletionWeight#setInnerWeight is unexpectedly empty.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org
For additional commands, e-mail: dev-h...@lucene.apache.org
