Combine Hibernate Search query with Lucene query

Hibernate Search
1

We have been using Hibernate Search 5.11.7.Final but because of some features with syntax highlighting we decided to upgrade to Hibernate Search 6.

Until now we have been using a MultiFieldQueryParser for the search term adding some date and numerice range queries like e.g.

final Query fromRangeQuery = builder.range().onField(nqd.getIndexFromDate())
		.above(nqd.getFromDate().atStartOfDay()).createQuery();
booleanQuery.add(fromRangeQuery, BooleanClause.Occur.MUST);

and passing the booleanQuery to Hibernate Search FullTextQuery, working like a charm.

Now we try using something like this:

final SearchQuery<MyEntity> query = session.search(MyEntity.class)
	.where(f -> f.bool(b -> {
		b.must(f.match()
			.fields(IndexField1,
				IndexField1,
				IndexField3)
			.matching("SearchTerm"));
		b.must(f.range().fields(queryDto.getIndex).atLeast(queryDto.getFrom()));
	})).sort(SortOrder.DESC).toQuery();

which is a Hibernate Search Query but the MultiFieldQueryParser seems to be available only in Lucene
and this works:

QueryParser parser = new MultiFieldQueryParser(fields, new StandardAnalyzer());
List<MyClass> hits = searchSession.search( MyClass.class )
        .extension( LuceneExtension.get() )
        .predicate( f -> f.fromLuceneQuery( parser.parse(terms) ) )
        .fetchHits();

Hibernate-search 6 MultiFieldQueryParser equivalent

The only problem left is:
How can I combine those two queries?

Best regards

2

The result of f.fromLuceneQuery is a predicate that you can combine like any other.

So, something like this?

		final SearchQuery<MyEntity> query = session.search(MyEntity.class)
			.extension( LuceneExtension.get() )
			.where(f -> f.bool(b -> {
				b.must(f.match()
					.fields(IndexField1,
						IndexField1,
						IndexField3)
					.matching("SearchTerm"));

				b.must(f.range().fields(queryDto.getIndex).atLeast(queryDto.getFrom()));

				QueryParser parser = new MultiFieldQueryParser(fields, new StandardAnalyzer());
				b.must(f.fromLuceneQuery(parser.parse(terms)));
			})).sort(SortOrder.DESC).toQuery();
2 Likes
3

Man this was a fast reply :smiley:
I will try this out and give you feedback.

Thanks in advance
Best regards

4

I just gave it a try and it seems to work.

Thank you very much.

1 Like