Examples with TopTermsRewrite org.apache.lucene.search.TopTermsRewrite used on opensource projects

Example 1 with TopTermsRewrite

use of org.apache.lucene.search.TopTermsRewrite in project OpenSearch by opensearch-project.

the class SpanMultiTermQueryBuilder method doToQuery.

@Override
protected Query doToQuery(QueryShardContext context) throws IOException {
    // We do the rewrite in toQuery to not have to deal with the case when a multi-term builder rewrites to a non-multi-term
    // builder.
    QueryBuilder multiTermQueryBuilder = Rewriteable.rewrite(this.multiTermQueryBuilder, context);
    if (multiTermQueryBuilder instanceof MatchNoneQueryBuilder) {
        return new SpanMatchNoDocsQuery(this.multiTermQueryBuilder.fieldName(), "Inner query rewrote to match_none");
    } else if (multiTermQueryBuilder instanceof PrefixQueryBuilder) {
        PrefixQueryBuilder prefixBuilder = (PrefixQueryBuilder) multiTermQueryBuilder;
        MappedFieldType fieldType = context.fieldMapper(prefixBuilder.fieldName());
        if (fieldType == null) {
            throw new IllegalStateException("Rewrite first");
        }
        final SpanMultiTermQueryWrapper.SpanRewriteMethod spanRewriteMethod;
        if (prefixBuilder.rewrite() != null) {
            MultiTermQuery.RewriteMethod rewriteMethod = QueryParsers.parseRewriteMethod(prefixBuilder.rewrite(), null, LoggingDeprecationHandler.INSTANCE);
            if (rewriteMethod instanceof TopTermsRewrite) {
                TopTermsRewrite<?> innerRewrite = (TopTermsRewrite<?>) rewriteMethod;
                spanRewriteMethod = new SpanMultiTermQueryWrapper.TopTermsSpanBooleanQueryRewrite(innerRewrite.getSize());
            } else {
                spanRewriteMethod = new SpanBooleanQueryRewriteWithMaxClause();
            }
        } else {
            spanRewriteMethod = new SpanBooleanQueryRewriteWithMaxClause();
        }
        return fieldType.spanPrefixQuery(prefixBuilder.value(), spanRewriteMethod, context);
    } else {
        Query subQuery = multiTermQueryBuilder.toQuery(context);
        while (true) {
            if (subQuery instanceof ConstantScoreQuery) {
                subQuery = ((ConstantScoreQuery) subQuery).getQuery();
            } else if (subQuery instanceof BoostQuery) {
                BoostQuery boostQuery = (BoostQuery) subQuery;
                subQuery = boostQuery.getQuery();
            } else {
                break;
            }
        }
        if (subQuery instanceof MatchNoDocsQuery) {
            return new SpanMatchNoDocsQuery(this.multiTermQueryBuilder.fieldName(), subQuery.toString());
        } else if (subQuery instanceof MultiTermQuery == false) {
            throw new UnsupportedOperationException("unsupported inner query, should be " + MultiTermQuery.class.getName() + " but was " + subQuery.getClass().getName());
        }
        MultiTermQuery multiTermQuery = (MultiTermQuery) subQuery;
        SpanMultiTermQueryWrapper<?> wrapper = new SpanMultiTermQueryWrapper<>(multiTermQuery);
        if (multiTermQuery.getRewriteMethod() instanceof TopTermsRewrite == false) {
            wrapper.setRewriteMethod(new SpanBooleanQueryRewriteWithMaxClause());
        }
        return wrapper;
    }
}

Example 2 with TopTermsRewrite

use of org.apache.lucene.search.TopTermsRewrite in project OpenSearch by opensearch-project.

the class SpanMultiTermQueryBuilderTests method doAssertLuceneQuery.

@Override
protected void doAssertLuceneQuery(SpanMultiTermQueryBuilder queryBuilder, Query query, QueryShardContext context) throws IOException {
    if (query instanceof SpanMatchNoDocsQuery) {
        return;
    }
    assertThat(query, either(instanceOf(SpanMultiTermQueryWrapper.class)).or(instanceOf(FieldMaskingSpanQuery.class)));
    if (query instanceof SpanMultiTermQueryWrapper) {
        SpanMultiTermQueryWrapper wrapper = (SpanMultiTermQueryWrapper) query;
        Query innerQuery = queryBuilder.innerQuery().toQuery(context);
        if (queryBuilder.innerQuery().boost() != AbstractQueryBuilder.DEFAULT_BOOST) {
            assertThat(innerQuery, instanceOf(BoostQuery.class));
            BoostQuery boostQuery = (BoostQuery) innerQuery;
            innerQuery = boostQuery.getQuery();
        }
        assertThat(innerQuery, instanceOf(MultiTermQuery.class));
        MultiTermQuery multiQuery = (MultiTermQuery) innerQuery;
        if (multiQuery.getRewriteMethod() instanceof TopTermsRewrite) {
            assertThat(wrapper.getRewriteMethod(), instanceOf(SpanMultiTermQueryWrapper.TopTermsSpanBooleanQueryRewrite.class));
        } else {
            assertThat(wrapper.getRewriteMethod(), instanceOf(SpanBooleanQueryRewriteWithMaxClause.class));
        }
    } else if (query instanceof FieldMaskingSpanQuery) {
        FieldMaskingSpanQuery mask = (FieldMaskingSpanQuery) query;
        assertThat(mask.getMaskedQuery(), instanceOf(TermQuery.class));
    }
}