[LUCENE-9367] Using a queryText which results in zero tokens causes a query to be built as null

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 7.2.1
• Component/s: core/search
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Tim Brier
• Created: 07/May/20 14:19
• Updated: 28/Aug/22 16:03

Description

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:

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);
    }
}