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Posted to dev@lucene.apache.org by "Julie Tibshirani (JIRA)" <ji...@apache.org> on 2018/05/01 21:59:00 UTC
[jira] [Updated] (LUCENE-8288) ContextQuery "." for
RegexCompletionQuery produces an assertion failure
[ https://issues.apache.org/jira/browse/LUCENE-8288?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Julie Tibshirani updated LUCENE-8288:
-------------------------------------
Attachment: LUCENE-8288-repro.patch
> 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
> Priority: Major
> Attachments: LUCENE-8288-repro.patch
>
>
> 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.
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