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

Example 6 with SynonymQuery

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

the class TestQueryParser method testSynonyms.

/** simple synonyms test */
public void testSynonyms() throws Exception {
    Query expected = new SynonymQuery(new Term(FIELD, "dogs"), new Term(FIELD, "dog"));
    QueryParser qp = new QueryParser(FIELD, new MockSynonymAnalyzer());
    assertEquals(expected, qp.parse("dogs"));
    assertEquals(expected, qp.parse("\"dogs\""));
    qp.setDefaultOperator(Operator.AND);
    assertEquals(expected, qp.parse("dogs"));
    assertEquals(expected, qp.parse("\"dogs\""));
    expected = new BoostQuery(expected, 2f);
    assertEquals(expected, qp.parse("dogs^2"));
    assertEquals(expected, qp.parse("\"dogs\"^2"));
}

Example 7 with SynonymQuery

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

the class TestQueryParser method testCJKSynonymsAND2.

/** more complex synonyms with default AND operator */
public void testCJKSynonymsAND2() throws Exception {
    BooleanQuery.Builder expectedB = new BooleanQuery.Builder();
    expectedB.add(new TermQuery(new Term(FIELD, "中")), BooleanClause.Occur.MUST);
    Query inner = new SynonymQuery(new Term(FIELD, "国"), new Term(FIELD, "國"));
    expectedB.add(inner, BooleanClause.Occur.MUST);
    Query inner2 = new SynonymQuery(new Term(FIELD, "国"), new Term(FIELD, "國"));
    expectedB.add(inner2, BooleanClause.Occur.MUST);
    Query expected = expectedB.build();
    QueryParser qp = new QueryParser(FIELD, new MockCJKSynonymAnalyzer());
    qp.setDefaultOperator(Operator.AND);
    assertEquals(expected, qp.parse("中国国"));
    expected = new BoostQuery(expected, 2f);
    assertEquals(expected, qp.parse("中国国^2"));
}

Example 8 with SynonymQuery

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

the class TestQueryParser method testCJKSynonym.

/** simple CJK synonym test */
public void testCJKSynonym() throws Exception {
    Query expected = new SynonymQuery(new Term(FIELD, "国"), new Term(FIELD, "國"));
    QueryParser qp = new QueryParser(FIELD, new MockCJKSynonymAnalyzer());
    assertEquals(expected, qp.parse("国"));
    qp.setDefaultOperator(Operator.AND);
    assertEquals(expected, qp.parse("国"));
    expected = new BoostQuery(expected, 2f);
    assertEquals(expected, qp.parse("国^2"));
}

Example 9 with SynonymQuery

use of org.apache.lucene.search.SynonymQuery 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 10 with SynonymQuery

use of org.apache.lucene.search.SynonymQuery 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
}