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

Example 26 with TermRangeQuery

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

the class SynonymTokenizer method testGetRangeFragments.

public void testGetRangeFragments() throws Exception {
    TestHighlightRunner helper = new TestHighlightRunner() {

        @Override
        public void run() throws Exception {
            numHighlights = 0;
            // Need to explicitly set the QueryParser property to use TermRangeQuery
            // rather
            // than RangeFilters
            TermRangeQuery rangeQuery = new TermRangeQuery(FIELD_NAME, new BytesRef("kannedy"), new BytesRef("kznnedy"), true, true);
            rangeQuery.setRewriteMethod(MultiTermQuery.SCORING_BOOLEAN_REWRITE);
            query = rangeQuery;
            doSearching(query);
            doStandardHighlights(analyzer, searcher, hits, query, HighlighterTest.this);
            assertTrue("Failed to find correct number of highlights " + numHighlights + " found", numHighlights == 5);
        }
    };
    helper.start();
}

Example 27 with TermRangeQuery

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

the class SynonymTokenizer method testNotRewriteMultiTermQuery.

public void testNotRewriteMultiTermQuery() throws IOException {
    // field "bar": (not the field we ultimately want to extract)
    MultiTermQuery mtq = new TermRangeQuery("bar", new BytesRef("aa"), new BytesRef("zz"), true, true);
    WeightedSpanTermExtractor extractor = new WeightedSpanTermExtractor() {

        @Override
        protected void extract(Query query, float boost, Map<String, WeightedSpanTerm> terms) throws IOException {
            assertEquals(mtq, query);
            super.extract(query, boost, terms);
        }
    };
    extractor.setExpandMultiTermQuery(true);
    extractor.setMaxDocCharsToAnalyze(51200);
    extractor.getWeightedSpanTerms(mtq, 3, new CannedTokenStream(new Token("aa", 0, 2), new Token("bb", 2, 4)), // field "foo"
    "foo");
}

Example 28 with TermRangeQuery

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

the class MultiTermHighlighting method extractAutomata.

/**
   * Extracts MultiTermQueries that match the provided field predicate.
   * Returns equivalent automata that will match terms.
   */
public static CharacterRunAutomaton[] extractAutomata(Query query, Predicate<String> fieldMatcher, boolean lookInSpan, Function<Query, Collection<Query>> preRewriteFunc) {
    // TODO Lucene needs a Query visitor API!  LUCENE-3041
    List<CharacterRunAutomaton> list = new ArrayList<>();
    Collection<Query> customSubQueries = preRewriteFunc.apply(query);
    if (customSubQueries != null) {
        for (Query sub : customSubQueries) {
            list.addAll(Arrays.asList(extractAutomata(sub, fieldMatcher, lookInSpan, preRewriteFunc)));
        }
    } else if (query instanceof BooleanQuery) {
        for (BooleanClause clause : (BooleanQuery) query) {
            if (!clause.isProhibited()) {
                list.addAll(Arrays.asList(extractAutomata(clause.getQuery(), fieldMatcher, lookInSpan, preRewriteFunc)));
            }
        }
    } else if (query instanceof ConstantScoreQuery) {
        list.addAll(Arrays.asList(extractAutomata(((ConstantScoreQuery) query).getQuery(), fieldMatcher, lookInSpan, preRewriteFunc)));
    } else if (query instanceof BoostQuery) {
        list.addAll(Arrays.asList(extractAutomata(((BoostQuery) query).getQuery(), fieldMatcher, lookInSpan, preRewriteFunc)));
    } else if (query instanceof DisjunctionMaxQuery) {
        for (Query sub : ((DisjunctionMaxQuery) query).getDisjuncts()) {
            list.addAll(Arrays.asList(extractAutomata(sub, fieldMatcher, lookInSpan, preRewriteFunc)));
        }
    } else if (lookInSpan && query instanceof SpanOrQuery) {
        for (Query sub : ((SpanOrQuery) query).getClauses()) {
            list.addAll(Arrays.asList(extractAutomata(sub, fieldMatcher, lookInSpan, preRewriteFunc)));
        }
    } else if (lookInSpan && query instanceof SpanNearQuery) {
        for (Query sub : ((SpanNearQuery) query).getClauses()) {
            list.addAll(Arrays.asList(extractAutomata(sub, fieldMatcher, lookInSpan, preRewriteFunc)));
        }
    } else if (lookInSpan && query instanceof SpanNotQuery) {
        list.addAll(Arrays.asList(extractAutomata(((SpanNotQuery) query).getInclude(), fieldMatcher, lookInSpan, preRewriteFunc)));
    } else if (lookInSpan && query instanceof SpanPositionCheckQuery) {
        list.addAll(Arrays.asList(extractAutomata(((SpanPositionCheckQuery) query).getMatch(), fieldMatcher, lookInSpan, preRewriteFunc)));
    } else if (lookInSpan && query instanceof SpanBoostQuery) {
        list.addAll(Arrays.asList(extractAutomata(((SpanBoostQuery) query).getQuery(), fieldMatcher, lookInSpan, preRewriteFunc)));
    } else if (lookInSpan && query instanceof SpanMultiTermQueryWrapper) {
        list.addAll(Arrays.asList(extractAutomata(((SpanMultiTermQueryWrapper<?>) query).getWrappedQuery(), fieldMatcher, lookInSpan, preRewriteFunc)));
    } else if (query instanceof PrefixQuery) {
        final PrefixQuery pq = (PrefixQuery) query;
        Term prefix = pq.getPrefix();
        if (fieldMatcher.test(prefix.field())) {
            list.add(new CharacterRunAutomaton(Operations.concatenate(Automata.makeString(prefix.text()), Automata.makeAnyString())) {

                @Override
                public String toString() {
                    return pq.toString();
                }
            });
        }
    } else if (query instanceof FuzzyQuery) {
        final FuzzyQuery fq = (FuzzyQuery) query;
        if (fieldMatcher.test(fq.getField())) {
            String utf16 = fq.getTerm().text();
            int[] termText = new int[utf16.codePointCount(0, utf16.length())];
            for (int cp, i = 0, j = 0; i < utf16.length(); i += Character.charCount(cp)) {
                termText[j++] = cp = utf16.codePointAt(i);
            }
            int termLength = termText.length;
            int prefixLength = Math.min(fq.getPrefixLength(), termLength);
            String suffix = UnicodeUtil.newString(termText, prefixLength, termText.length - prefixLength);
            LevenshteinAutomata builder = new LevenshteinAutomata(suffix, fq.getTranspositions());
            String prefix = UnicodeUtil.newString(termText, 0, prefixLength);
            Automaton automaton = builder.toAutomaton(fq.getMaxEdits(), prefix);
            list.add(new CharacterRunAutomaton(automaton) {

                @Override
                public String toString() {
                    return fq.toString();
                }
            });
        }
    } else if (query instanceof TermRangeQuery) {
        final TermRangeQuery tq = (TermRangeQuery) query;
        if (fieldMatcher.test(tq.getField())) {
            final CharsRef lowerBound;
            if (tq.getLowerTerm() == null) {
                lowerBound = null;
            } else {
                lowerBound = new CharsRef(tq.getLowerTerm().utf8ToString());
            }
            final CharsRef upperBound;
            if (tq.getUpperTerm() == null) {
                upperBound = null;
            } else {
                upperBound = new CharsRef(tq.getUpperTerm().utf8ToString());
            }
            final boolean includeLower = tq.includesLower();
            final boolean includeUpper = tq.includesUpper();
            final CharsRef scratch = new CharsRef();
            @SuppressWarnings("deprecation") final Comparator<CharsRef> comparator = CharsRef.getUTF16SortedAsUTF8Comparator();
            // this is *not* an automaton, but its very simple
            list.add(new CharacterRunAutomaton(Automata.makeEmpty()) {

                @Override
                public boolean run(char[] s, int offset, int length) {
                    scratch.chars = s;
                    scratch.offset = offset;
                    scratch.length = length;
                    if (lowerBound != null) {
                        int cmp = comparator.compare(scratch, lowerBound);
                        if (cmp < 0 || (!includeLower && cmp == 0)) {
                            return false;
                        }
                    }
                    if (upperBound != null) {
                        int cmp = comparator.compare(scratch, upperBound);
                        if (cmp > 0 || (!includeUpper && cmp == 0)) {
                            return false;
                        }
                    }
                    return true;
                }

                @Override
                public String toString() {
                    return tq.toString();
                }
            });
        }
    } else if (query instanceof AutomatonQuery) {
        final AutomatonQuery aq = (AutomatonQuery) query;
        if (fieldMatcher.test(aq.getField())) {
            list.add(new CharacterRunAutomaton(aq.getAutomaton()) {

                @Override
                public String toString() {
                    return aq.toString();
                }
            });
        }
    }
    return list.toArray(new CharacterRunAutomaton[list.size()]);
}

Example 29 with TermRangeQuery

use of org.apache.lucene.search.TermRangeQuery in project tika by apache.

the class RecentFiles method generateRSS.

public String generateRSS(File indexFile) throws CorruptIndexException, IOException {
    StringBuffer output = new StringBuffer();
    output.append(getRSSHeaders());
    IndexSearcher searcher = null;
    try {
        reader = IndexReader.open(new SimpleFSDirectory(indexFile));
        searcher = new IndexSearcher(reader);
        GregorianCalendar gc = new java.util.GregorianCalendar(TimeZone.getDefault(), Locale.getDefault());
        gc.setTime(new Date());
        String nowDateTime = ISO8601.format(gc);
        gc.add(java.util.GregorianCalendar.MINUTE, -5);
        String fiveMinsAgo = ISO8601.format(gc);
        TermRangeQuery query = new TermRangeQuery(Metadata.DATE.toString(), fiveMinsAgo, nowDateTime, true, true);
        TopScoreDocCollector collector = TopScoreDocCollector.create(20, true);
        searcher.search(query, collector);
        ScoreDoc[] hits = collector.topDocs().scoreDocs;
        for (int i = 0; i < hits.length; i++) {
            Document doc = searcher.doc(hits[i].doc);
            output.append(getRSSItem(doc));
        }
    } finally {
        if (reader != null)
            reader.close();
        if (searcher != null)
            searcher.close();
    }
    output.append(getRSSFooters());
    return output.toString();
}