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https://issues.apache.org/jira/browse/LUCENE-9367?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17242868#comment-17242868
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Zach Chen edited comment on LUCENE-9367 at 12/3/20, 2:37 AM:
-------------------------------------------------------------
Looks like there's some inconsistency about parsing, as I can get
*MatchNoDocsQuery* from *SimpleQueryParser*
{code:java}
public void test() throws IOException {
Analyzer analyzer = CustomAnalyzer.builder()
.withTokenizer(StandardTokenizerFactory.class)
.addTokenFilter(StopFilterFactory.class)
.build();
QueryBuilder queryBuilder = new QueryBuilder(analyzer);
String onlyStopWords = "the and it";
Query query = queryBuilder.createPhraseQuery("AnyField", onlyStopWords);
assertNull(query);
query = new SimpleQueryParser(analyzer, "AnyField").parse(onlyStopWords);
assertEquals(new MatchNoDocsQuery("empty string passed to query parser"),
query);
}
{code}
I can put out a PR to change it to MatchNoDocsQuery if that's the preferred
direction? I also see additional changes though to check for MatchNoDocsQuery
now instead of null in this situation.
was (Author: zacharymorn):
Looks like there's some inconsistency about parsing, as I can get
*MatchNoDocsQuery* from *SimpleQueryParser*
{code:java}
public void test() throws IOException {
Analyzer analyzer = CustomAnalyzer.builder()
.withTokenizer(StandardTokenizerFactory.class)
.addTokenFilter(StopFilterFactory.class)
.build();
QueryBuilder queryBuilder = new QueryBuilder(analyzer);
String onlyStopWords = "the and it";
Query query = queryBuilder.createPhraseQuery("AnyField", onlyStopWords);
assertNull(query);
query = new SimpleQueryParser(analyzer, "AnyField").parse(onlyStopWords);
assertEquals(new MatchNoDocsQuery("empty string passed to query parser"),
query);
}
{code}
I can put out a PR to change it to MatchNoDocsQuery if that's the preferred
direction? I also see additional changes though to check for MatchNoDocsQuery
now instead of null in this situation.
> Using a queryText which results in zero tokens causes a query to be built as
> null
> ---------------------------------------------------------------------------------
>
> Key: LUCENE-9367
> URL: https://issues.apache.org/jira/browse/LUCENE-9367
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/search
> Affects Versions: 7.2.1
> Reporter: Tim Brier
> Priority: Major
>
> If a queryText produces zero tokens after being processed by an Analyzer,
> when you try to build a Query with it the result is null.
>
> The following code reproduces this bug:
> {code:java}
> public class LuceneBug {
> public Query buildQuery() throws IOException {
> Analyzer analyzer = CustomAnalyzer.builder()
> .withTokenizer(StandardTokenizerFactory.class)
> .addTokenFilter(StopFilterFactory.class)
> .build();
> QueryBuilder queryBuilder = new QueryBuilder(analyzer);
> String onlyStopWords = "the and it";
> return queryBuilder.createPhraseQuery("AnyField", onlyStopWords);
> }
> }
> {code}
>
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