Examples of org.apache.lucene.queries.ExtendedCommonTermsQuery

org.apache.lucene.queries.ExtendedCommonTermsQuery
Extended version of {@link CommonTermsQuery} that allows to pass in aminimumNumberShouldMatch specification that uses the actual num of high frequent terms to calculate the minimum matching terms.

                                            Float maxTermFrequency,
                                            FieldMapper mapper) {
            Query booleanQuery = createBooleanQuery(field, queryText, lowFreqOccur);
            if (booleanQuery != null && booleanQuery instanceof BooleanQuery) {
                BooleanQuery bq = (BooleanQuery) booleanQuery;
                ExtendedCommonTermsQuery query = new ExtendedCommonTermsQuery(
                        highFreqOccur, lowFreqOccur, maxTermFrequency,
                        ((BooleanQuery)booleanQuery).isCoordDisabled(), mapper);
                for (BooleanClause clause : bq.clauses()) {
                    if (!(clause.getQuery() instanceof TermQuery)) {
                        return booleanQuery;
                    }
                    query.add(((TermQuery) clause.getQuery()).getTerm());
                }
                return query;
            }
            return booleanQuery;
        }

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    public void testCommonTermsQuery1() throws IOException {
        IndexQueryParserService queryParser = queryParser();
        String query = copyToStringFromClasspath("/org/elasticsearch/index/query/commonTerms-query1.json");
        Query parsedQuery = queryParser.parse(query).query();
        assertThat(parsedQuery, instanceOf(ExtendedCommonTermsQuery.class));
        ExtendedCommonTermsQuery ectQuery = (ExtendedCommonTermsQuery) parsedQuery;
        assertThat(ectQuery.getHighFreqMinimumNumberShouldMatchSpec(), nullValue());
        assertThat(ectQuery.getLowFreqMinimumNumberShouldMatchSpec(), equalTo("2"));
    }

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    public void testCommonTermsQuery2() throws IOException {
        IndexQueryParserService queryParser = queryParser();
        String query = copyToStringFromClasspath("/org/elasticsearch/index/query/commonTerms-query2.json");
        Query parsedQuery = queryParser.parse(query).query();
        assertThat(parsedQuery, instanceOf(ExtendedCommonTermsQuery.class));
        ExtendedCommonTermsQuery ectQuery = (ExtendedCommonTermsQuery) parsedQuery;
        assertThat(ectQuery.getHighFreqMinimumNumberShouldMatchSpec(), equalTo("50%"));
        assertThat(ectQuery.getLowFreqMinimumNumberShouldMatchSpec(), equalTo("5<20%"));
    }

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    public void testCommonTermsQuery3() throws IOException {
        IndexQueryParserService queryParser = queryParser();
        String query = copyToStringFromClasspath("/org/elasticsearch/index/query/commonTerms-query3.json");
        Query parsedQuery = queryParser.parse(query).query();
        assertThat(parsedQuery, instanceOf(ExtendedCommonTermsQuery.class));
        ExtendedCommonTermsQuery ectQuery = (ExtendedCommonTermsQuery) parsedQuery;
        assertThat(ectQuery.getHighFreqMinimumNumberShouldMatchSpec(), nullValue());
        assertThat(ectQuery.getLowFreqMinimumNumberShouldMatchSpec(), equalTo("2"));
    }

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        public Query createCommonTermsQuery(String field, String queryText, Occur highFreqOccur, Occur lowFreqOccur, float maxTermFrequency, FieldMapper<?> mapper) {
            Query booleanQuery = createBooleanQuery(field, queryText, lowFreqOccur);
            if (booleanQuery != null && booleanQuery instanceof BooleanQuery) {
                BooleanQuery bq = (BooleanQuery) booleanQuery;
                ExtendedCommonTermsQuery query = new ExtendedCommonTermsQuery(highFreqOccur, lowFreqOccur, maxTermFrequency, ((BooleanQuery)booleanQuery).isCoordDisabled(), mapper);
                for (BooleanClause clause : bq.clauses()) {
                    if (!(clause.getQuery() instanceof TermQuery)) {
                        return booleanQuery;
                    }
                    query.add(((TermQuery) clause.getQuery()).getTerm());
                }
                return query;
            }
            return booleanQuery;

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            if (analyzer == null) {
                throw new ElasticsearchIllegalArgumentException("No analyzer found for [" + queryAnalyzer + "]");
            }
        }


        ExtendedCommonTermsQuery commonsQuery = new ExtendedCommonTermsQuery(highFreqOccur, lowFreqOccur, maxTermFrequency, disableCoords, mapper);
        commonsQuery.setBoost(boost);
        Query query = parseQueryString(commonsQuery, value.toString(), field, parseContext, analyzer, lowFreqMinimumShouldMatch, highFreqMinimumShouldMatch, smartNameFieldMappers);
        if (queryName != null) {
            parseContext.addNamedQuery(queryName, query);
        }
        return query;

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Related Classes of org.apache.lucene.queries.ExtendedCommonTermsQuery

io.crate.lucene.match.MatchQueryBuilder$InnerQueryBuilder

org.elasticsearch.index.query.CommonTermsQueryParser

org.elasticsearch.index.query.SimpleIndexQueryParserTests

org.elasticsearch.index.search.MatchQuery$MatchQueryBuilder

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