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

Example 1 with MultiTermQuery

use of org.apache.lucene.search.MultiTermQuery in project elasticsearch by elastic.

the class SpanMultiTermQueryBuilderTests method doAssertLuceneQuery.

@Override
protected void doAssertLuceneQuery(SpanMultiTermQueryBuilder queryBuilder, Query query, SearchContext context) throws IOException {
    if (queryBuilder.innerQuery().boost() != AbstractQueryBuilder.DEFAULT_BOOST) {
        assertThat(query, instanceOf(SpanBoostQuery.class));
        SpanBoostQuery boostQuery = (SpanBoostQuery) query;
        assertThat(boostQuery.getBoost(), equalTo(queryBuilder.innerQuery().boost()));
        query = boostQuery.getQuery();
    }
    assertThat(query, instanceOf(SpanMultiTermQueryWrapper.class));
    SpanMultiTermQueryWrapper spanMultiTermQueryWrapper = (SpanMultiTermQueryWrapper) query;
    Query multiTermQuery = queryBuilder.innerQuery().toQuery(context.getQueryShardContext());
    if (queryBuilder.innerQuery().boost() != AbstractQueryBuilder.DEFAULT_BOOST) {
        assertThat(multiTermQuery, instanceOf(BoostQuery.class));
        BoostQuery boostQuery = (BoostQuery) multiTermQuery;
        multiTermQuery = boostQuery.getQuery();
    }
    assertThat(multiTermQuery, instanceOf(MultiTermQuery.class));
    assertThat(spanMultiTermQueryWrapper.getWrappedQuery(), equalTo(new SpanMultiTermQueryWrapper<>((MultiTermQuery) multiTermQuery).getWrappedQuery()));
}

Example 2 with MultiTermQuery

use of org.apache.lucene.search.MultiTermQuery in project elasticsearch by elastic.

the class SpanMultiTermQueryBuilderTests method testUnsupportedInnerQueryType.

/**
     * test checks that we throw an {@link UnsupportedOperationException} if the query wrapped
     * by {@link SpanMultiTermQueryBuilder} does not generate a lucene {@link MultiTermQuery}.
     * This is currently the case for {@link RangeQueryBuilder} when the target field is mapped
     * to a date.
     */
public void testUnsupportedInnerQueryType() throws IOException {
    MultiTermQueryBuilder query = new MultiTermQueryBuilder() {

        @Override
        public Query toQuery(QueryShardContext context) throws IOException {
            return new TermQuery(new Term("foo", "bar"));
        }

        @Override
        public Query toFilter(QueryShardContext context) throws IOException {
            return toQuery(context);
        }

        @Override
        public QueryBuilder queryName(String queryName) {
            return this;
        }

        @Override
        public String queryName() {
            return "foo";
        }

        @Override
        public float boost() {
            return 1f;
        }

        @Override
        public QueryBuilder boost(float boost) {
            return this;
        }

        @Override
        public String getName() {
            return "foo";
        }

        @Override
        public String getWriteableName() {
            return "foo";
        }

        @Override
        public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
            return builder;
        }

        @Override
        public void writeTo(StreamOutput out) throws IOException {
        }
    };
    SpanMultiTermQueryBuilder spamMultiTermQuery = new SpanMultiTermQueryBuilder(query);
    UnsupportedOperationException e = expectThrows(UnsupportedOperationException.class, () -> spamMultiTermQuery.toQuery(createShardContext()));
    assertThat(e.getMessage(), containsString("unsupported inner query, should be " + MultiTermQuery.class.getName()));
}

Example 3 with MultiTermQuery

use of org.apache.lucene.search.MultiTermQuery in project elasticsearch by elastic.

the class FuzzyQueryBuilder method doToQuery.

@Override
protected Query doToQuery(QueryShardContext context) throws IOException {
    Query query = null;
    String rewrite = this.rewrite;
    if (rewrite == null && context.isFilter()) {
        rewrite = QueryParsers.CONSTANT_SCORE.getPreferredName();
    }
    MappedFieldType fieldType = context.fieldMapper(fieldName);
    if (fieldType != null) {
        query = fieldType.fuzzyQuery(value, fuzziness, prefixLength, maxExpansions, transpositions);
    }
    if (query == null) {
        int maxEdits = fuzziness.asDistance(BytesRefs.toString(value));
        query = new FuzzyQuery(new Term(fieldName, BytesRefs.toBytesRef(value)), maxEdits, prefixLength, maxExpansions, transpositions);
    }
    if (query instanceof MultiTermQuery) {
        MultiTermQuery.RewriteMethod rewriteMethod = QueryParsers.parseRewriteMethod(rewrite, null);
        QueryParsers.setRewriteMethod((MultiTermQuery) query, rewriteMethod);
    }
    return query;
}

Example 4 with MultiTermQuery

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

the class TestSpanMultiTermQueryWrapper method testWrappedQueryIsNotModified.

@Test
public void testWrappedQueryIsNotModified() {
    final PrefixQuery pq = new PrefixQuery(new Term("field", "test"));
    int pqHash = pq.hashCode();
    SpanMultiTermQueryWrapper<PrefixQuery> wrapper = new SpanMultiTermQueryWrapper<>(pq);
    assertEquals(pqHash, pq.hashCode());
    wrapper.setRewriteMethod(new SpanMultiTermQueryWrapper.SpanRewriteMethod() {

        @Override
        public SpanQuery rewrite(IndexReader reader, MultiTermQuery query) throws IOException {
            return null;
        }
    });
    assertEquals(pqHash, pq.hashCode());
}

Example 5 with MultiTermQuery

use of org.apache.lucene.search.MultiTermQuery 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);
        }
    }
}