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

Example 21 with ConstantScoreQuery

use of org.apache.lucene.search.ConstantScoreQuery in project lucene-solr by apache.

the class FieldQueryTest method testFlattenConstantScoreQuery.

public void testFlattenConstantScoreQuery() throws Exception {
    initBoost();
    Query query = new ConstantScoreQuery(pqF("A"));
    query = new BoostQuery(query, boost);
    FieldQuery fq = new FieldQuery(query, true, true);
    Set<Query> flatQueries = new HashSet<>();
    fq.flatten(query, reader, flatQueries, 1f);
    assertCollectionQueries(flatQueries, tq(boost, "A"));
}

Example 22 with ConstantScoreQuery

use of org.apache.lucene.search.ConstantScoreQuery in project lucene-solr by apache.

the class BBoxStrategy method makeQuery.

//---------------------------------
// Query Building
//---------------------------------
//  Utility on SpatialStrategy?
//  public Query makeQueryWithValueSource(SpatialArgs args, ValueSource valueSource) {
//    return new CustomScoreQuery(makeQuery(args), new FunctionQuery(valueSource));
//or...
//  return new BooleanQuery.Builder()
//      .add(new FunctionQuery(valueSource), BooleanClause.Occur.MUST)//matches everything and provides score
//      .add(filterQuery, BooleanClause.Occur.FILTER)//filters (score isn't used)
//  .build();
//  }
@Override
public Query makeQuery(SpatialArgs args) {
    Shape shape = args.getShape();
    if (!(shape instanceof Rectangle))
        throw new UnsupportedOperationException("Can only query by Rectangle, not " + shape);
    Rectangle bbox = (Rectangle) shape;
    Query spatial;
    // Useful for understanding Relations:
    // http://edndoc.esri.com/arcsde/9.1/general_topics/understand_spatial_relations.htm
    SpatialOperation op = args.getOperation();
    if (op == SpatialOperation.BBoxIntersects)
        spatial = makeIntersects(bbox);
    else if (op == SpatialOperation.BBoxWithin)
        spatial = makeWithin(bbox);
    else if (op == SpatialOperation.Contains)
        spatial = makeContains(bbox);
    else if (op == SpatialOperation.Intersects)
        spatial = makeIntersects(bbox);
    else if (op == SpatialOperation.IsEqualTo)
        spatial = makeEquals(bbox);
    else if (op == SpatialOperation.IsDisjointTo)
        spatial = makeDisjoint(bbox);
    else if (op == SpatialOperation.IsWithin)
        spatial = makeWithin(bbox);
    else {
        //no Overlaps support yet
        throw new UnsupportedSpatialOperation(op);
    }
    return new ConstantScoreQuery(spatial);
}

Example 23 with ConstantScoreQuery

use of org.apache.lucene.search.ConstantScoreQuery in project lucene-solr by apache.

the class WeightedSpanTermExtractor method extract.

/**
   * Fills a <code>Map</code> with {@link WeightedSpanTerm}s using the terms from the supplied <code>Query</code>.
   * 
   * @param query
   *          Query to extract Terms from
   * @param terms
   *          Map to place created WeightedSpanTerms in
   * @throws IOException If there is a low-level I/O error
   */
protected void extract(Query query, float boost, Map<String, WeightedSpanTerm> terms) throws IOException {
    if (query instanceof BoostQuery) {
        BoostQuery boostQuery = (BoostQuery) query;
        extract(boostQuery.getQuery(), boost * boostQuery.getBoost(), terms);
    } else if (query instanceof BooleanQuery) {
        for (BooleanClause clause : (BooleanQuery) query) {
            if (!clause.isProhibited()) {
                extract(clause.getQuery(), boost, terms);
            }
        }
    } else if (query instanceof PhraseQuery) {
        PhraseQuery phraseQuery = ((PhraseQuery) query);
        Term[] phraseQueryTerms = phraseQuery.getTerms();
        if (phraseQueryTerms.length == 1) {
            extractWeightedSpanTerms(terms, new SpanTermQuery(phraseQueryTerms[0]), boost);
        } else {
            SpanQuery[] clauses = new SpanQuery[phraseQueryTerms.length];
            for (int i = 0; i < phraseQueryTerms.length; i++) {
                clauses[i] = new SpanTermQuery(phraseQueryTerms[i]);
            }
            // sum position increments beyond 1
            int positionGaps = 0;
            int[] positions = phraseQuery.getPositions();
            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 = (phraseQuery.getSlop() == 0);
            SpanNearQuery sp = new SpanNearQuery(clauses, phraseQuery.getSlop() + positionGaps, inorder);
            extractWeightedSpanTerms(terms, sp, boost);
        }
    } else if (query instanceof TermQuery || query instanceof SynonymQuery) {
        extractWeightedTerms(terms, query, boost);
    } else if (query instanceof SpanQuery) {
        extractWeightedSpanTerms(terms, (SpanQuery) query, boost);
    } else if (query instanceof ConstantScoreQuery) {
        final Query q = ((ConstantScoreQuery) query).getQuery();
        if (q != null) {
            extract(q, boost, terms);
        }
    } else if (query instanceof CommonTermsQuery) {
        // specialized since rewriting would change the result query 
        // this query is TermContext sensitive.
        extractWeightedTerms(terms, query, boost);
    } else if (query instanceof DisjunctionMaxQuery) {
        for (Query clause : ((DisjunctionMaxQuery) query)) {
            extract(clause, boost, terms);
        }
    } else if (query instanceof ToParentBlockJoinQuery) {
        extract(((ToParentBlockJoinQuery) query).getChildQuery(), boost, terms);
    } else if (query instanceof ToChildBlockJoinQuery) {
        extract(((ToChildBlockJoinQuery) query).getParentQuery(), boost, terms);
    } else if (query instanceof MultiPhraseQuery) {
        final MultiPhraseQuery mpq = (MultiPhraseQuery) query;
        final Term[][] termArrays = mpq.getTermArrays();
        final int[] positions = mpq.getPositions();
        if (positions.length > 0) {
            int maxPosition = positions[positions.length - 1];
            for (int i = 0; i < positions.length - 1; ++i) {
                if (positions[i] > maxPosition) {
                    maxPosition = positions[i];
                }
            }
            @SuppressWarnings({ "unchecked", "rawtypes" }) final List<SpanQuery>[] disjunctLists = new List[maxPosition + 1];
            int distinctPositions = 0;
            for (int i = 0; i < termArrays.length; ++i) {
                final Term[] termArray = termArrays[i];
                List<SpanQuery> disjuncts = disjunctLists[positions[i]];
                if (disjuncts == null) {
                    disjuncts = (disjunctLists[positions[i]] = new ArrayList<>(termArray.length));
                    ++distinctPositions;
                }
                for (Term aTermArray : termArray) {
                    disjuncts.add(new SpanTermQuery(aTermArray));
                }
            }
            int positionGaps = 0;
            int position = 0;
            final SpanQuery[] clauses = new SpanQuery[distinctPositions];
            for (List<SpanQuery> disjuncts : disjunctLists) {
                if (disjuncts != null) {
                    clauses[position++] = new SpanOrQuery(disjuncts.toArray(new SpanQuery[disjuncts.size()]));
                } else {
                    ++positionGaps;
                }
            }
            if (clauses.length == 1) {
                extractWeightedSpanTerms(terms, clauses[0], boost);
            } else {
                final int slop = mpq.getSlop();
                final boolean inorder = (slop == 0);
                SpanNearQuery sp = new SpanNearQuery(clauses, slop + positionGaps, inorder);
                extractWeightedSpanTerms(terms, sp, boost);
            }
        }
    } else if (query instanceof MatchAllDocsQuery) {
    //nothing
    } else if (query instanceof CustomScoreQuery) {
        extract(((CustomScoreQuery) query).getSubQuery(), boost, terms);
    } else if (isQueryUnsupported(query.getClass())) {
    // nothing
    } else {
        if (query instanceof MultiTermQuery && (!expandMultiTermQuery || !fieldNameComparator(((MultiTermQuery) query).getField()))) {
            return;
        }
        Query origQuery = query;
        final IndexReader reader = getLeafContext().reader();
        Query rewritten;
        if (query instanceof MultiTermQuery) {
            rewritten = MultiTermQuery.SCORING_BOOLEAN_REWRITE.rewrite(reader, (MultiTermQuery) query);
        } else {
            rewritten = origQuery.rewrite(reader);
        }
        if (rewritten != origQuery) {
            // only rewrite once and then flatten again - the rewritten query could have a special treatment
            // if this method is overwritten in a subclass or above in the next recursion
            extract(rewritten, boost, terms);
        } else {
            extractUnknownQuery(query, terms);
        }
    }
}

Example 24 with ConstantScoreQuery

use of org.apache.lucene.search.ConstantScoreQuery in project lucene-solr by apache.

the class FieldQuery method flatten.

void flatten(Query sourceQuery, IndexReader reader, Collection<Query> flatQueries, float boost) throws IOException {
    while (sourceQuery instanceof BoostQuery) {
        BoostQuery bq = (BoostQuery) sourceQuery;
        sourceQuery = bq.getQuery();
        boost *= bq.getBoost();
    }
    if (sourceQuery instanceof BooleanQuery) {
        BooleanQuery bq = (BooleanQuery) sourceQuery;
        for (BooleanClause clause : bq) {
            if (!clause.isProhibited()) {
                flatten(clause.getQuery(), reader, flatQueries, boost);
            }
        }
    } else if (sourceQuery instanceof DisjunctionMaxQuery) {
        DisjunctionMaxQuery dmq = (DisjunctionMaxQuery) sourceQuery;
        for (Query query : dmq) {
            flatten(query, reader, flatQueries, boost);
        }
    } else if (sourceQuery instanceof TermQuery) {
        if (boost != 1f) {
            sourceQuery = new BoostQuery(sourceQuery, boost);
        }
        if (!flatQueries.contains(sourceQuery))
            flatQueries.add(sourceQuery);
    } else if (sourceQuery instanceof SynonymQuery) {
        SynonymQuery synQuery = (SynonymQuery) sourceQuery;
        for (Term term : synQuery.getTerms()) {
            flatten(new TermQuery(term), reader, flatQueries, boost);
        }
    } else if (sourceQuery instanceof PhraseQuery) {
        PhraseQuery pq = (PhraseQuery) sourceQuery;
        if (pq.getTerms().length == 1)
            sourceQuery = new TermQuery(pq.getTerms()[0]);
        if (boost != 1f) {
            sourceQuery = new BoostQuery(sourceQuery, boost);
        }
        flatQueries.add(sourceQuery);
    } else if (sourceQuery instanceof ConstantScoreQuery) {
        final Query q = ((ConstantScoreQuery) sourceQuery).getQuery();
        if (q != null) {
            flatten(q, reader, flatQueries, boost);
        }
    } else if (sourceQuery instanceof CustomScoreQuery) {
        final Query q = ((CustomScoreQuery) sourceQuery).getSubQuery();
        if (q != null) {
            flatten(q, reader, flatQueries, boost);
        }
    } else if (sourceQuery instanceof ToParentBlockJoinQuery) {
        Query childQuery = ((ToParentBlockJoinQuery) sourceQuery).getChildQuery();
        if (childQuery != null) {
            flatten(childQuery, reader, flatQueries, boost);
        }
    } else if (reader != null) {
        Query query = sourceQuery;
        Query rewritten;
        if (sourceQuery instanceof MultiTermQuery) {
            rewritten = new MultiTermQuery.TopTermsScoringBooleanQueryRewrite(MAX_MTQ_TERMS).rewrite(reader, (MultiTermQuery) query);
        } else {
            rewritten = query.rewrite(reader);
        }
        if (rewritten != query) {
            // only rewrite once and then flatten again - the rewritten query could have a speacial treatment
            // if this method is overwritten in a subclass.
            flatten(rewritten, reader, flatQueries, boost);
        }
    // if the query is already rewritten we discard it
    }
// else discard queries
}

Example 25 with ConstantScoreQuery

use of org.apache.lucene.search.ConstantScoreQuery in project lucene-solr by apache.

the class BBoxStrategy method makeQuery.

//---------------------------------
// Query Building
//---------------------------------
//  Utility on SpatialStrategy?
//  public Query makeQueryWithValueSource(SpatialArgs args, ValueSource valueSource) {
//    return new CustomScoreQuery(makeQuery(args), new FunctionQuery(valueSource));
//or...
//  return new BooleanQuery.Builder()
//      .add(new FunctionQuery(valueSource), BooleanClause.Occur.MUST)//matches everything and provides score
//      .add(filterQuery, BooleanClause.Occur.FILTER)//filters (score isn't used)
//  .build();
//  }
@Override
public Query makeQuery(SpatialArgs args) {
    Shape shape = args.getShape();
    if (!(shape instanceof Rectangle))
        throw new UnsupportedOperationException("Can only query by Rectangle, not " + shape);
    Rectangle bbox = (Rectangle) shape;
    Query spatial;
    // Useful for understanding Relations:
    // http://edndoc.esri.com/arcsde/9.1/general_topics/understand_spatial_relations.htm
    SpatialOperation op = args.getOperation();
    if (op == SpatialOperation.BBoxIntersects)
        spatial = makeIntersects(bbox);
    else if (op == SpatialOperation.BBoxWithin)
        spatial = makeWithin(bbox);
    else if (op == SpatialOperation.Contains)
        spatial = makeContains(bbox);
    else if (op == SpatialOperation.Intersects)
        spatial = makeIntersects(bbox);
    else if (op == SpatialOperation.IsEqualTo)
        spatial = makeEquals(bbox);
    else if (op == SpatialOperation.IsDisjointTo)
        spatial = makeDisjoint(bbox);
    else if (op == SpatialOperation.IsWithin)
        spatial = makeWithin(bbox);
    else {
        //no Overlaps support yet
        throw new UnsupportedSpatialOperation(op);
    }
    return new ConstantScoreQuery(spatial);
}