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

Introduction

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

Prototype

public Sort(SortField... fields) 

Source Link

Document

Sets the sort to the given criteria in succession: the first SortField is checked first, but if it produces a tie, then the second SortField is used to break the tie, etc.

Usage

From source file:axiom.scripting.rhino.LuceneQueryDispatcher.java

License:Open Source License

private Sort getLuceneSort(SortObject sort) {
    if (sort == null) {
        return null;
    }//  w w  w  . ja  va  2s .  com
    QuerySortField[] fields = sort.getSortFields();
    if (fields == null) {
        return null;
    }

    final int length = fields.length;
    SortField[] sortFields = new SortField[length];
    for (int i = 0; i < length; i++) {
        String s = fields[i].getField();
        if (s == null) {
            return null;
        }
        sortFields[i] = new SortField(s, SortField.STRING, !fields[i].isAscending());
    }

    return new Sort(sortFields);
}

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From source file:br.ufba.dcc.mestrado.computacao.repository.impl.ProjectRepositoryImpl.java

private void configureRelevanceSort(FullTextQuery fullTextQuery) {
    boolean reverse = true;
    SortField userContSortField = new SortField(SearchFieldsEnum.projectUserCount.fieldName(),
            SortField.Type.LONG, reverse);
    SortField ratingContSortField = new SortField(SearchFieldsEnum.projectRatingCount.fieldName(),
            SortField.Type.LONG, reverse);
    SortField reviewContSortField = new SortField(SearchFieldsEnum.projectReviewCount.fieldName(),
            SortField.Type.LONG, reverse);

    List<SortField> sortFieldList = new LinkedList<>();
    sortFieldList.addAll(Arrays.asList(Sort.RELEVANCE.getSort()));
    sortFieldList.add(userContSortField);
    sortFieldList.add(reviewContSortField);
    sortFieldList.add(ratingContSortField);

    Sort sort = new Sort(userContSortField);
    fullTextQuery.setSort(sort);/*from  w  w w .j a  v a 2 s  .  c om*/
}

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From source file:bzh.terrevirtuelle.navisu.gazetteer.impl.lucene.GeoNameResolver.java

License:Apache License

/**
 * Returns a list of location near a certain coordinate.
 *
 * @param latitude, @param longitude - Center of search area
 * @param distanceInMiles - Search Radius in miles
 * @param indexerPath - Path to Lucene index
 * @param count - Upper bound to number of results
 * @return - List of locations sorted by population
 * @throws IOException/*from   w  w  w  .  j  av  a2 s.co  m*/
 */
public List<Location> searchNearby(Double latitude, Double longitude, Double distanceInMiles,
        String indexerPath, int count) throws IOException {

    double distanceInDeg = DistanceUtils.dist2Degrees(distanceInMiles,
            DistanceUtils.EARTH_EQUATORIAL_RADIUS_MI);
    SpatialArgs spatialArgs = new SpatialArgs(SpatialOperation.IsWithin,
            ctx.makeCircle(longitude, latitude, distanceInDeg));

    String key = latitude + "-" + longitude;
    Filter filter = strategy.makeFilter(spatialArgs);

    IndexSearcher searcher = new IndexSearcher(createIndexReader(indexerPath));
    Sort sort = new Sort(populationSort);
    TopDocs topDocs = searcher.search(new MatchAllDocsQuery(), filter, count, sort);

    ScoreDoc[] scoreDocs = topDocs.scoreDocs;
    HashMap<String, List<Location>> allCandidates = new HashMap<String, List<Location>>();

    getMatchingCandidates(searcher, allCandidates, key, scoreDocs);
    List<Location> results = allCandidates.get(key);

    return results;
}

---

From source file:bzh.terrevirtuelle.navisu.gazetteer.impl.lucene.GeoNameResolver.java

License:Apache License

private HashMap<String, List<Location>> resolveEntities(List<String> locationNames, int count,
        IndexReader reader) throws IOException {
    if (locationNames.size() >= 200) {
        hitsPerPage = 5; // avoid heavy computation
    }/*from  w ww  .  j a v  a2 s . c o m*/
    IndexSearcher searcher = new IndexSearcher(reader);
    Query q = null;

    HashMap<String, List<Location>> allCandidates = new HashMap<String, List<Location>>();

    for (String name : locationNames) {

        if (!allCandidates.containsKey(name)) {
            try {
                //query is wrapped in additional quotes (") to avoid query tokenization on space
                q = new MultiFieldQueryParser(new String[] { FIELD_NAME_NAME, FIELD_NAME_ALTERNATE_NAMES },
                        analyzer).parse(String.format("\"%s\"", name));

                Sort sort = new Sort(populationSort);
                //Fetch 3 times desired values, these will be sorted on code and only desired number will be kept
                ScoreDoc[] hits = searcher.search(q, hitsPerPage * 3, sort).scoreDocs;

                getMatchingCandidates(searcher, allCandidates, name, hits);
            } catch (org.apache.lucene.queryparser.classic.ParseException e) {
                e.printStackTrace();
            }
        }
    }

    HashMap<String, List<Location>> resolvedEntities = new HashMap<String, List<Location>>();
    pickBestCandidates(resolvedEntities, allCandidates, count);
    return resolvedEntities;
}

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From source file:ccc.plugins.search.lucene.SimpleLuceneFS.java

License:Open Source License

/** {@inheritDoc} */
@Override/*from  ww w  .  java  2  s  . c  om*/
public SearchResult find(final String searchTerms, final String sort, final SortOrder order,
        final int nofOfResultsPerPage, final int pageNo) {
    final int page = pageNo - 1;
    final Sort sorter = (null == sort) ? null
            : new Sort(new SortField(sort, SortField.STRING_VAL, (SortOrder.DESC == order)));

    if (searchTerms == null || searchTerms.trim().equals("")) {
        return new SearchResult(new HashSet<UUID>(), 0, nofOfResultsPerPage, searchTerms, page);
    }

    final int maxHits = (page + 1) * nofOfResultsPerPage;
    final CapturingHandler capturingHandler = new CapturingHandler(nofOfResultsPerPage, page);

    find(searchTerms, maxHits, sorter, null, capturingHandler);

    return new SearchResult(capturingHandler.getHits(), capturingHandler.getTotalResultsCount(),
            nofOfResultsPerPage, searchTerms, page);

}

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From source file:ccc.plugins.search.lucene.SimpleLuceneFS.java

License:Open Source License

/** {@inheritDoc} */
@Override//from www .ja  va2s  .  co  m
public SearchResult find(final String searchTerms, final String sort, final SortOrder order,
        final ACL userPerms, final int nofOfResultsPerPage, final int pageNo) {
    final int page = pageNo - 1;
    final Sort sorter = (null == sort) ? null
            : new Sort(new SortField(sort, SortField.STRING_VAL, (SortOrder.DESC == order)));

    if (searchTerms == null || searchTerms.trim().equals("")) {
        return new SearchResult(new HashSet<UUID>(), 0, nofOfResultsPerPage, searchTerms, page);
    }

    final int maxHits = (page + 1) * nofOfResultsPerPage;
    final CapturingHandler capturingHandler = new CapturingHandler(nofOfResultsPerPage, page);

    find(searchTerms, maxHits, sorter, userPerms, capturingHandler);

    return new SearchResult(capturingHandler.getHits(), capturingHandler.getTotalResultsCount(),
            nofOfResultsPerPage, searchTerms, page);

}

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From source file:com.aistor.modules.cms.service.ArticleService.java

License:Open Source License

/**
 * // w ww .  j  a v  a2  s .  co m
 */
public Page<Article> search(Page<Article> page, String q) {

    // ?
    BooleanQuery query = articleDao.getFullTextQuery(q, "title", "keywords", "desciption",
            "articleData.content");
    // ?
    BooleanQuery queryFilter = articleDao.getFullTextQuery(
            new BooleanClause(new TermQuery(new Term("status", Article.STATUS_RELEASE)), Occur.MUST));
    // ?
    Sort sort = new Sort(new SortField("updateDate", SortField.DOC, true));
    // 
    articleDao.search(page, query, queryFilter, sort);
    // 
    articleDao.keywordsHighlight(query, page.getList(), "desciption", "articleData.content");

    return page;
}

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From source file:com.aliasi.lingmed.medline.IndexMedline.java

License:Lingpipe license

private String getLastUpdate(File index) throws IOException {
    System.out.println("Got index" + index);
    IndexReader reader = null;//from ww  w .  ja  va2s.com
    IndexSearcher searcher = null;
    try {
        if (isNewDirectory(mIndex))
            return LOW_SORT_STRING;
        Directory fsDir = FSDirectory.open(mIndex);
        reader = IndexReader.open(fsDir);
        searcher = new IndexSearcher(reader);

        Term term = new Term(Fields.MEDLINE_DIST_FIELD, Fields.MEDLINE_DIST_VALUE);
        SortField sortField = new SortField(Fields.MEDLINE_FILE_FIELD, SortField.STRING);
        Sort sort = new Sort(sortField);
        Query query = new TermQuery(term);
        TopFieldDocs results = searcher.search(query, null, 1, sort);
        if (results.totalHits == 0) {
            searcher.close();
            reader.close();
            return LOW_SORT_STRING;
        }
        //            if (mLogger.isDebugEnabled())
        //                mLogger.debug("num MEDLINE_FILE docs: " + results.totalHits);
        Document d = searcher.doc(results.scoreDocs[0].doc);
        return d.get(Fields.MEDLINE_FILE_FIELD);
    } finally {
        if (searcher != null)
            searcher.close();
        if (reader != null)
            reader.close();
    }
}

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From source file:com.amalto.core.storage.hibernate.FullTextQueryHandler.java

License:Open Source License

@Override
public StorageResults visit(OrderBy orderBy) {
    TypedExpression field = orderBy.getExpression();
    if (field instanceof Field) {
        FieldMetadata fieldMetadata = ((Field) field).getFieldMetadata();
        SortField sortField = new SortField(fieldMetadata.getName(), getSortType(fieldMetadata),
                orderBy.getDirection() == OrderBy.Direction.DESC);
        query.setSort(new Sort(sortField));
        return null;
    } else {/*from   ww w  .  java2 s .c  o  m*/
        throw new NotImplementedException("No support for order by for full text search on non-field.");
    }
}

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From source file:com.b2international.index.lucene.IndexFieldBase.java

License:Apache License

@Override
public final Sort createSort() {
    return new Sort(new SortField(fieldName(), getSortFieldType()));
}

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