Examples with FiltersFunctionScoreQuery org.elasticsearch.common.lucene.search.function.FiltersFunctionScoreQuery used on opensource projects

Example 6 with FiltersFunctionScoreQuery

use of org.elasticsearch.common.lucene.search.function.FiltersFunctionScoreQuery in project elasticsearch by elastic.

the class CustomUnifiedHighlighter method rewriteCustomQuery.

/**
     * Translate custom queries in queries that are supported by the unified highlighter.
     */
private Collection<Query> rewriteCustomQuery(Query query) {
    if (query instanceof MultiPhrasePrefixQuery) {
        MultiPhrasePrefixQuery mpq = (MultiPhrasePrefixQuery) query;
        Term[][] terms = mpq.getTerms();
        int[] positions = mpq.getPositions();
        SpanQuery[] positionSpanQueries = new SpanQuery[positions.length];
        int sizeMinus1 = terms.length - 1;
        for (int i = 0; i < positions.length; i++) {
            SpanQuery[] innerQueries = new SpanQuery[terms[i].length];
            for (int j = 0; j < terms[i].length; j++) {
                if (i == sizeMinus1) {
                    innerQueries[j] = new SpanMultiTermQueryWrapper(new PrefixQuery(terms[i][j]));
                } else {
                    innerQueries[j] = new SpanTermQuery(terms[i][j]);
                }
            }
            if (innerQueries.length > 1) {
                positionSpanQueries[i] = new SpanOrQuery(innerQueries);
            } else {
                positionSpanQueries[i] = innerQueries[0];
            }
        }
        // sum position increments beyond 1
        int positionGaps = 0;
        if (positions.length >= 2) {
            // positions are in increasing order.   max(0,...) is just a safeguard.
            positionGaps = Math.max(0, positions[positions.length - 1] - positions[0] - positions.length + 1);
        }
        //if original slop is 0 then require inOrder
        boolean inorder = (mpq.getSlop() == 0);
        return Collections.singletonList(new SpanNearQuery(positionSpanQueries, mpq.getSlop() + positionGaps, inorder));
    } else if (query instanceof CommonTermsQuery) {
        CommonTermsQuery ctq = (CommonTermsQuery) query;
        List<Query> tqs = new ArrayList<>();
        for (Term term : ctq.getTerms()) {
            tqs.add(new TermQuery(term));
        }
        return tqs;
    } else if (query instanceof AllTermQuery) {
        AllTermQuery atq = (AllTermQuery) query;
        return Collections.singletonList(new TermQuery(atq.getTerm()));
    } else if (query instanceof FunctionScoreQuery) {
        return Collections.singletonList(((FunctionScoreQuery) query).getSubQuery());
    } else if (query instanceof FiltersFunctionScoreQuery) {
        return Collections.singletonList(((FiltersFunctionScoreQuery) query).getSubQuery());
    } else {
        return null;
    }
}

Example 7 with FiltersFunctionScoreQuery

use of org.elasticsearch.common.lucene.search.function.FiltersFunctionScoreQuery in project elasticsearch by elastic.

the class FunctionScoreQueryBuilder method doToQuery.

@Override
protected Query doToQuery(QueryShardContext context) throws IOException {
    FilterFunction[] filterFunctions = new FilterFunction[filterFunctionBuilders.length];
    int i = 0;
    for (FilterFunctionBuilder filterFunctionBuilder : filterFunctionBuilders) {
        Query filter = filterFunctionBuilder.getFilter().toQuery(context);
        ScoreFunction scoreFunction = filterFunctionBuilder.getScoreFunction().toFunction(context);
        filterFunctions[i++] = new FilterFunction(filter, scoreFunction);
    }
    Query query = this.query.toQuery(context);
    if (query == null) {
        query = new MatchAllDocsQuery();
    }
    // handle cases where only one score function and no filter was provided. In this case we create a FunctionScoreQuery.
    if (filterFunctions.length == 0 || filterFunctions.length == 1 && (this.filterFunctionBuilders[0].getFilter().getName().equals(MatchAllQueryBuilder.NAME))) {
        ScoreFunction function = filterFunctions.length == 0 ? null : filterFunctions[0].function;
        CombineFunction combineFunction = this.boostMode;
        if (combineFunction == null) {
            if (function != null) {
                combineFunction = function.getDefaultScoreCombiner();
            } else {
                combineFunction = DEFAULT_BOOST_MODE;
            }
        }
        return new FunctionScoreQuery(query, function, minScore, combineFunction, maxBoost);
    }
    // in all other cases we create a FiltersFunctionScoreQuery
    CombineFunction boostMode = this.boostMode == null ? DEFAULT_BOOST_MODE : this.boostMode;
    return new FiltersFunctionScoreQuery(query, scoreMode, filterFunctions, maxBoost, minScore, boostMode);
}

Example 8 with FiltersFunctionScoreQuery

use of org.elasticsearch.common.lucene.search.function.FiltersFunctionScoreQuery in project elasticsearch by elastic.

the class CustomFieldQuery method flatten.

@Override
void flatten(Query sourceQuery, IndexReader reader, Collection<Query> flatQueries, float boost) throws IOException {
    if (sourceQuery instanceof BoostQuery) {
        BoostQuery bq = (BoostQuery) sourceQuery;
        sourceQuery = bq.getQuery();
        boost *= bq.getBoost();
        flatten(sourceQuery, reader, flatQueries, boost);
    } else if (sourceQuery instanceof SpanTermQuery) {
        super.flatten(new TermQuery(((SpanTermQuery) sourceQuery).getTerm()), reader, flatQueries, boost);
    } else if (sourceQuery instanceof ConstantScoreQuery) {
        flatten(((ConstantScoreQuery) sourceQuery).getQuery(), reader, flatQueries, boost);
    } else if (sourceQuery instanceof FunctionScoreQuery) {
        flatten(((FunctionScoreQuery) sourceQuery).getSubQuery(), reader, flatQueries, boost);
    } else if (sourceQuery instanceof MultiPhrasePrefixQuery) {
        flatten(sourceQuery.rewrite(reader), reader, flatQueries, boost);
    } else if (sourceQuery instanceof FiltersFunctionScoreQuery) {
        flatten(((FiltersFunctionScoreQuery) sourceQuery).getSubQuery(), reader, flatQueries, boost);
    } else if (sourceQuery instanceof MultiPhraseQuery) {
        MultiPhraseQuery q = ((MultiPhraseQuery) sourceQuery);
        convertMultiPhraseQuery(0, new int[q.getTermArrays().length], q, q.getTermArrays(), q.getPositions(), reader, flatQueries);
    } else if (sourceQuery instanceof BlendedTermQuery) {
        final BlendedTermQuery blendedTermQuery = (BlendedTermQuery) sourceQuery;
        flatten(blendedTermQuery.rewrite(reader), reader, flatQueries, boost);
    } else if (sourceQuery instanceof ESToParentBlockJoinQuery) {
        ESToParentBlockJoinQuery blockJoinQuery = (ESToParentBlockJoinQuery) sourceQuery;
        flatten(blockJoinQuery.getChildQuery(), reader, flatQueries, boost);
    } else if (sourceQuery instanceof BoostingQuery) {
        BoostingQuery boostingQuery = (BoostingQuery) sourceQuery;
        //flatten positive query with query boost
        flatten(boostingQuery.getMatch(), reader, flatQueries, boost);
        //flatten negative query with negative boost
        flatten(boostingQuery.getContext(), reader, flatQueries, boostingQuery.getBoost());
    } else if (sourceQuery instanceof SynonymQuery) {
        // SynonymQuery should be handled by the parent class directly.
        // This statement should be removed when https://issues.apache.org/jira/browse/LUCENE-7484 is merged.
        SynonymQuery synQuery = (SynonymQuery) sourceQuery;
        for (Term term : synQuery.getTerms()) {
            flatten(new TermQuery(term), reader, flatQueries, boost);
        }
    } else {
        super.flatten(sourceQuery, reader, flatQueries, boost);
    }
}

Example 9 with FiltersFunctionScoreQuery

use of org.elasticsearch.common.lucene.search.function.FiltersFunctionScoreQuery in project elasticsearch by elastic.

the class FunctionScoreEquivalenceTests method testMinScoreAllIncluded.

public void testMinScoreAllIncluded() throws Exception {
    Term term = randomTerm();
    Query query = new TermQuery(term);
    FunctionScoreQuery fsq = new FunctionScoreQuery(query, null, 0f, null, Float.POSITIVE_INFINITY);
    assertSameScores(query, fsq);
    FiltersFunctionScoreQuery ffsq = new FiltersFunctionScoreQuery(query, ScoreMode.SUM, new FilterFunction[0], Float.POSITIVE_INFINITY, 0f, CombineFunction.MULTIPLY);
    assertSameScores(query, ffsq);
}

Example 10 with FiltersFunctionScoreQuery

use of org.elasticsearch.common.lucene.search.function.FiltersFunctionScoreQuery in project elasticsearch by elastic.

the class FunctionScoreEquivalenceTests method testTwoPhaseMinScore.

public void testTwoPhaseMinScore() throws Exception {
    Term term = randomTerm();
    Query query = new TermQuery(term);
    Float minScore = random().nextFloat();
    FunctionScoreQuery fsq1 = new FunctionScoreQuery(query, null, minScore, null, Float.POSITIVE_INFINITY);
    FunctionScoreQuery fsq2 = new FunctionScoreQuery(new RandomApproximationQuery(query, random()), null, minScore, null, Float.POSITIVE_INFINITY);
    assertSameScores(fsq1, fsq2);
    FiltersFunctionScoreQuery ffsq1 = new FiltersFunctionScoreQuery(query, ScoreMode.SUM, new FilterFunction[0], Float.POSITIVE_INFINITY, minScore, CombineFunction.MULTIPLY);
    FiltersFunctionScoreQuery ffsq2 = new FiltersFunctionScoreQuery(query, ScoreMode.SUM, new FilterFunction[0], Float.POSITIVE_INFINITY, minScore, CombineFunction.MULTIPLY);
    assertSameScores(ffsq1, ffsq2);
}