Example usage for org.apache.lucene.search Sort INDEXORDER

List of usage examples for org.apache.lucene.search Sort INDEXORDER

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In this page you can find the example usage for org.apache.lucene.search Sort INDEXORDER.

Prototype

Sort INDEXORDER

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Document

Represents sorting by index order.

Usage

From source file:org.neo4j.kernel.api.impl.index.collector.DocValuesCollector.java

License:Open Source License

/**
 * Replay the search and collect every hit into TopDocs. One {@code ScoreDoc} is allocated
 * for every hit and the {@code Document} instance is loaded lazily with on every iteration step.
 *
 * @param sort how to sort the iterator. If this is null, results will be in index-order.
 * @return an indexhits iterator over all matches
 * @throws IOException//from   w  w  w.  ja v a2s.c o  m
 */
public IndexHits<Document> getIndexHits(Sort sort) throws IOException {
    List<MatchingDocs> matchingDocs = getMatchingDocs();
    int size = getTotalHits();
    if (size == 0) {
        return EMPTY_INDEX_HITS;
    }

    if (sort == null || sort == Sort.INDEXORDER) {
        return new DocsInIndexOrderIterator(matchingDocs, size, isKeepScores());
    }

    TopDocs topDocs = getTopDocs(sort, size);
    LeafReaderContext[] contexts = getLeafReaderContexts(matchingDocs);
    return new TopDocsIterator(topDocs, contexts);
}

From source file:org.neo4j.kernel.api.impl.index.DocValuesCollector.java

License:Open Source License

/**
 * Replay the search and collect every hit into TopDocs. One {@code ScoreDoc} is allocated
 * for every hit and the {@code Document} instance is loaded lazily with on every iteration step.
 *
 * @param sort how to sort the iterator. If this is null, results will be in index-order.
 * @return an indexhits iterator over all matches
 * @throws IOException//w ww.java2  s  .  c o m
 */
public IndexHits<Document> getIndexHits(Sort sort) throws IOException {
    List<MatchingDocs> matchingDocs = getMatchingDocs();
    int size = getTotalHits();
    if (size == 0) {
        return new AbstractIndexHits<Document>() {
            @Override
            public int size() {
                return 0;
            }

            @Override
            public float currentScore() {
                return Float.NaN;
            }

            @Override
            protected Document fetchNextOrNull() {
                return null;
            }
        };
    }

    if (sort == null || sort == Sort.INDEXORDER) {
        return new DocsInIndexOrderIterator(matchingDocs, size, isKeepScores());
    }

    TopDocs topDocs = getTopDocs(sort, size);
    LeafReaderContext[] contexts = getLeafReaderContexts(matchingDocs);
    return new TopDocsIterator(topDocs, contexts);
}

From source file:org.pageseeder.flint.lucene.LuceneIndexQueries.java

License:Apache License

/**
 * Run a search on the given Index.//from w w  w.j  av a  2s. c om
 *
 * @param index  the Index to run the search on
 * @param query  the query to run
 * @param paging paging details (can be <code>null</code>)
 *
 * @return the search results
 *
 * @throws IndexException if any error occurred while performing the search
 */
public static SearchResults query(Index index, SearchQuery query, SearchPaging paging) throws IndexException {
    LuceneIndexIO io = getIndexIO(index);
    IndexSearcher searcher = io.bookSearcher();
    if (searcher != null) {
        try {
            Query lquery = query.toQuery();
            if (lquery == null) {
                io.releaseSearcher(searcher);
                throw new IndexException("Failed performing a query on the Index because the query is null",
                        new NullPointerException("Null query"));
            }
            LOGGER.debug("Performing search [{}] on index {}", query, index);
            Sort sort = query.getSort();
            if (sort == null) {
                sort = Sort.INDEXORDER;
            }
            // load the scores
            TopFieldCollector tfc = TopFieldCollector.create(sort, paging.getHitsPerPage() * paging.getPage(),
                    true, true, false);
            searcher.search(lquery, tfc);
            return new SearchResults(query, tfc.topDocs().scoreDocs, tfc.getTotalHits(), paging, io, searcher);
        } catch (IOException e) {
            io.releaseSearcher(searcher);
            throw new IndexException("Failed performing a query on the Index because of an I/O problem", e);
        }
    }
    return null;
}

From source file:org.pageseeder.flint.lucene.LuceneIndexQueries.java

License:Apache License

/**
 * Run a search on the given Indexes./*from   w w w .  j a v a  2s  . c o m*/
 *
 * @param indexes  the Indexes to run the search on
 * @param query    the query to run
 * @param paging   paging details (can be <code>null</code>)
 *
 * @return the search results
 *
 * @throws IndexException if any error occurred while performing the search
 */
public static SearchResults query(List<Index> indexes, SearchQuery query, SearchPaging paging)
        throws IndexException {
    Query lquery = query.toQuery();
    if (lquery == null)
        throw new IndexException("Failed performing a query because the query is null",
                new NullPointerException("Null query"));
    // find all readers
    Map<LuceneIndexIO, IndexReader> readersMap = new HashMap<>();
    IndexReader[] readers = new IndexReader[indexes.size()];
    // grab a reader for each indexes
    for (int i = 0; i < indexes.size(); i++) {
        LuceneIndexIO io = getIndexIO(indexes.get(i));
        // make sure index has been setup
        if (io != null) {
            // grab what we need
            IndexReader reader = io.bookReader();
            readers[i] = reader;
            readersMap.put(io, reader);
        }
    }
    try {
        MultiReader reader = new MultiReader(readers);
        IndexSearcher searcher = new IndexSearcher(reader);
        LOGGER.debug("Performing search [{}] on {} indexes", query, readers.length);
        Sort sort = query.getSort();
        if (sort == null)
            sort = Sort.INDEXORDER;
        // load the scores
        TopFieldDocs results = searcher.search(lquery, paging.getHitsPerPage() * paging.getPage(), sort);
        return new SearchResults(query, results, paging, readersMap, searcher);
    } catch (IOException e) {
        for (LuceneIndexIO io : readersMap.keySet())
            io.releaseReader(readersMap.get(io));
        throw new IndexException("Failed performing a query on the Index because of an I/O problem", e);
    }
}

From source file:org.pageseeder.flint.lucene.query.PredicateSearchQuery.java

License:Apache License

/**
 * Creates new predicate search query.//ww  w. jav a  2  s . com
 *
 * @param predicate The predicate for this query.
 * @param sortField The field name to use to order the results.
 *
 * @throws IllegalArgumentException If the predicate is <code>null</code>.
 */
public PredicateSearchQuery(String predicate, String sortField) throws IllegalArgumentException {
    this(predicate, sortField == null ? Sort.INDEXORDER : new Sort(new SortField(sortField, Type.STRING)));
}

From source file:org.pageseeder.flint.lucene.query.PredicateSearchQuery.java

License:Apache License

/**
 * Creates new predicate search query./*  w w w  .  jav  a  2  s.  c  om*/
 *
 * @param predicate The predicate for this query.
 * @param analyzer  The analyzer to use for the query, should be the same as the one used to write the Index.
 * @param sortField The field name to use to order the results.
 *
 * @throws IllegalArgumentException If the predicate is <code>null</code>.
 */
public PredicateSearchQuery(String predicate, Analyzer analyzer, String sortField)
        throws IllegalArgumentException {
    this(predicate, analyzer,
            sortField == null ? Sort.INDEXORDER : new Sort(new SortField(sortField, Type.STRING)));
}

From source file:org.pageseeder.flint.lucene.query.PredicateSearchQuery.java

License:Apache License

/**
 * Creates new predicate search query./*from  w ww.j  a  v  a 2  s.  c o  m*/
 *
 * @param predicate The predicate for this query.
 *
 * @throws IllegalArgumentException If the predicate is <code>null</code>.
 */
public PredicateSearchQuery(String predicate) throws IllegalArgumentException {
    this(predicate, Sort.INDEXORDER);
}

From source file:org.pageseeder.flint.lucene.query.PredicateSearchQuery.java

License:Apache License

/**
 * Creates new predicate search query./*  w w  w  .ja v a  2  s  .com*/
 *
 * @param predicate The predicate for this query.
 * @param analyzer  The analyzer to use for the query, should be the same as the one used to write the Index.
 *
 * @throws IllegalArgumentException If the predicate is <code>null</code>.
 */
public PredicateSearchQuery(String predicate, Analyzer analyzer) throws IllegalArgumentException {
    this(predicate, analyzer, Sort.INDEXORDER);
}

From source file:org.sindice.siren.search.TestSirenNumericRangeQuery32.java

License:Open Source License

/** test for both constant score and boolean query, the other tests only use the constant score mode */
private void testRange(final int precisionStep) throws Exception {
    final String field = "field" + precisionStep;
    final int count = 3000;
    final int lower = (distance * 3 / 2) + startOffset, upper = lower + count * distance + (distance / 3);
    final SirenNumericRangeQuery<Integer> q = SirenNumericRangeQuery.newIntRange(field, precisionStep, lower,
            upper, true, true);//from   w ww . j av  a 2  s .  co  m
    final SirenCellQuery cq = new SirenCellQuery(q);
    cq.setConstraint(2);

    TopDocs topDocs;
    String type;
    q.clearTotalNumberOfTerms();

    type = " (constant score boolean rewrite)";
    q.setRewriteMethod(SirenMultiTermQuery.CONSTANT_SCORE_BOOLEAN_QUERY_REWRITE);
    topDocs = searcher.search(cq, null, noDocs, Sort.INDEXORDER);

    final ScoreDoc[] sd = topDocs.scoreDocs;
    assertNotNull(sd);
    assertEquals("Score doc count" + type, count, sd.length);
    Document doc = searcher.doc(sd[0].doc);
    assertEquals("First doc" + type, 2 * distance + startOffset,
            Integer.parseInt(getLiteralValue(doc.get(field))));
    doc = searcher.doc(sd[sd.length - 1].doc);
    assertEquals("Last doc" + type, (1 + count) * distance + startOffset,
            Integer.parseInt(getLiteralValue(doc.get(field))));
}

From source file:org.sindice.siren.search.TestSirenNumericRangeQuery32.java

License:Open Source License

@Test
public void testInverseRange() throws Exception {
    SirenNumericRangeQuery<Integer> q = SirenNumericRangeQuery.newIntRange("field8", 8, 1000, -1000, true,
            true);//from  w ww  .  j a va  2 s.c o m
    q.clearTotalNumberOfTerms();
    q.setRewriteMethod(SirenMultiTermQuery.CONSTANT_SCORE_BOOLEAN_QUERY_REWRITE);
    TopDocs topDocs = searcher.search(q, null, noDocs, Sort.INDEXORDER);
    assertEquals("A inverse range should return the EMPTY_DOCIDSET instance", 0, topDocs.totalHits);

    q = SirenNumericRangeQuery.newIntRange("field8", 8, Integer.MAX_VALUE, null, false, false);
    q.clearTotalNumberOfTerms();
    q.setRewriteMethod(SirenMultiTermQuery.CONSTANT_SCORE_BOOLEAN_QUERY_REWRITE);
    topDocs = searcher.search(q, null, noDocs, Sort.INDEXORDER);
    assertEquals("A exclusive range starting with Integer.MAX_VALUE should return the EMPTY_DOCIDSET instance",
            0, topDocs.totalHits);

    q = SirenNumericRangeQuery.newIntRange("field8", 8, null, Integer.MIN_VALUE, false, false);
    q.clearTotalNumberOfTerms();
    q.setRewriteMethod(SirenMultiTermQuery.CONSTANT_SCORE_BOOLEAN_QUERY_REWRITE);
    topDocs = searcher.search(q, null, noDocs, Sort.INDEXORDER);
    assertEquals("A exclusive range ending with Integer.MIN_VALUE should return the EMPTY_DOCIDSET instance", 0,
            topDocs.totalHits);
}