Examples of org.apache.lucene.search.DisjunctionMaxQuery$DisjunctionMaxWeight

org.apache.lucene.search.DisjunctionMaxQuery
Expert: the Weight for DisjunctionMaxQuery, used to normalize, score and explain these queries.
NOTE: this API and implementation is subject to change suddenly in the next release.

    @Override
    protected Query getFieldQuery(String field, String queryText, int slop) throws ParseException {
        Collection<String> fields = extractMultiFields(field);
        if (fields != null) {
            if (settings.useDisMax()) {
                DisjunctionMaxQuery disMaxQuery = new DisjunctionMaxQuery(settings.tieBreaker());
                boolean added = false;
                for (String mField : fields) {
                    Query q = super.getFieldQuery(mField, queryText, slop);
                    if (q != null) {
                        added = true;
                        applyBoost(mField, q);
                        applySlop(q, slop);
                        disMaxQuery.add(q);
                    }
                }
                if (!added) {
                    return null;
                }

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        if (fields.size() == 1) {
            return getRangeQuerySingle(fields.iterator().next(), part1, part2, startInclusive, endInclusive);
        }


        if (settings.useDisMax()) {
            DisjunctionMaxQuery disMaxQuery = new DisjunctionMaxQuery(settings.tieBreaker());
            boolean added = false;
            for (String mField : fields) {
                Query q = getRangeQuerySingle(mField, part1, part2, startInclusive, endInclusive);
                if (q != null) {
                    added = true;
                    applyBoost(mField, q);
                    disMaxQuery.add(q);
                }
            }
            if (!added) {
                return null;
            }

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        if (fields != null) {
            if (fields.size() == 1) {
                return getFuzzyQuerySingle(fields.iterator().next(), termStr, minSimilarity);
            }
            if (settings.useDisMax()) {
                DisjunctionMaxQuery disMaxQuery = new DisjunctionMaxQuery(settings.tieBreaker());
                boolean added = false;
                for (String mField : fields) {
                    Query q = getFuzzyQuerySingle(mField, termStr, minSimilarity);
                    if (q != null) {
                        added = true;
                        applyBoost(mField, q);
                        disMaxQuery.add(q);
                    }
                }
                if (!added) {
                    return null;
                }

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        if (fields != null) {
            if (fields.size() == 1) {
                return getPrefixQuerySingle(fields.iterator().next(), termStr);
            }
            if (settings.useDisMax()) {
                DisjunctionMaxQuery disMaxQuery = new DisjunctionMaxQuery(settings.tieBreaker());
                boolean added = false;
                for (String mField : fields) {
                    Query q = getPrefixQuerySingle(mField, termStr);
                    if (q != null) {
                        added = true;
                        applyBoost(mField, q);
                        disMaxQuery.add(q);
                    }
                }
                if (!added) {
                    return null;
                }

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        if (fields != null) {
            if (fields.size() == 1) {
                return getWildcardQuerySingle(fields.iterator().next(), termStr);
            }
            if (settings.useDisMax()) {
                DisjunctionMaxQuery disMaxQuery = new DisjunctionMaxQuery(settings.tieBreaker());
                boolean added = false;
                for (String mField : fields) {
                    Query q = getWildcardQuerySingle(mField, termStr);
                    if (q != null) {
                        added = true;
                        applyBoost(mField, q);
                        disMaxQuery.add(q);
                    }
                }
                if (!added) {
                    return null;
                }

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        if (fields != null) {
            if (fields.size() == 1) {
                return getRegexpQuerySingle(fields.iterator().next(), termStr);
            }
            if (settings.useDisMax()) {
                DisjunctionMaxQuery disMaxQuery = new DisjunctionMaxQuery(settings.tieBreaker());
                boolean added = false;
                for (String mField : fields) {
                    Query q = getRegexpQuerySingle(mField, termStr);
                    if (q != null) {
                        added = true;
                        applyBoost(mField, q);
                        disMaxQuery.add(q);
                    }
                }
                if (!added) {
                    return null;
                }

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    @Test
    public void testQueryStringFields2Builder() throws Exception {
        IndexQueryParserService queryParser = queryParser();
        Query parsedQuery = queryParser.parse(queryString("test").field("content").field("name").useDisMax(true)).query();
        assertThat(parsedQuery, instanceOf(DisjunctionMaxQuery.class));
        DisjunctionMaxQuery disMaxQuery = (DisjunctionMaxQuery) parsedQuery;
        List<Query> disjuncts = disMaxQuery.getDisjuncts();
        assertThat(((TermQuery) disjuncts.get(0)).getTerm(), equalTo(new Term("content", "test")));
        assertThat(((TermQuery) disjuncts.get(1)).getTerm(), equalTo(new Term("name", "test")));
    }

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    public void testQueryStringFields2() throws Exception {
        IndexQueryParserService queryParser = queryParser();
        String query = copyToStringFromClasspath("/org/elasticsearch/index/query/query-fields2.json");
        Query parsedQuery = queryParser.parse(query).query();
        assertThat(parsedQuery, instanceOf(DisjunctionMaxQuery.class));
        DisjunctionMaxQuery disMaxQuery = (DisjunctionMaxQuery) parsedQuery;
        List<Query> disjuncts = disMaxQuery.getDisjuncts();
        assertThat(((TermQuery) disjuncts.get(0)).getTerm(), equalTo(new Term("content", "test")));
        assertThat(((TermQuery) disjuncts.get(1)).getTerm(), equalTo(new Term("name", "test")));
    }

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    @Test
    public void testQueryStringFields3Builder() throws Exception {
        IndexQueryParserService queryParser = queryParser();
        Query parsedQuery = queryParser.parse(queryString("test").field("content", 2.2f).field("name").useDisMax(true)).query();
        assertThat(parsedQuery, instanceOf(DisjunctionMaxQuery.class));
        DisjunctionMaxQuery disMaxQuery = (DisjunctionMaxQuery) parsedQuery;
        List<Query> disjuncts = disMaxQuery.getDisjuncts();
        assertThat(((TermQuery) disjuncts.get(0)).getTerm(), equalTo(new Term("content", "test")));
        assertThat((double) disjuncts.get(0).getBoost(), closeTo(2.2, 0.01));
        assertThat(((TermQuery) disjuncts.get(1)).getTerm(), equalTo(new Term("name", "test")));
        assertThat((double) disjuncts.get(1).getBoost(), closeTo(1, 0.01));
    }

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    public void testQueryStringFields3() throws Exception {
        IndexQueryParserService queryParser = queryParser();
        String query = copyToStringFromClasspath("/org/elasticsearch/index/query/query-fields3.json");
        Query parsedQuery = queryParser.parse(query).query();
        assertThat(parsedQuery, instanceOf(DisjunctionMaxQuery.class));
        DisjunctionMaxQuery disMaxQuery = (DisjunctionMaxQuery) parsedQuery;
        List<Query> disjuncts = disMaxQuery.getDisjuncts();
        assertThat(((TermQuery) disjuncts.get(0)).getTerm(), equalTo(new Term("content", "test")));
        assertThat((double) disjuncts.get(0).getBoost(), closeTo(2.2, 0.01));
        assertThat(((TermQuery) disjuncts.get(1)).getTerm(), equalTo(new Term("name", "test")));
        assertThat((double) disjuncts.get(1).getBoost(), closeTo(1, 0.01));
    }

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