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

Introduction

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

Prototype

public SortField[] getSort() 

Source Link

Document

Representation of the sort criteria.

Usage

From source file:org.infoglue.deliver.externalsearch.ExternalSearchService.java

License:Open Source License

public SearchResult search(SearchRequest params) throws SystemException {
    List<Object> result = new ArrayList<Object>();
    if (isSearchable()) {
        try {/*  w w w .  j  a  v  a  2  s .c  o m*/
            StandardAnalyzer analyzer = new StandardAnalyzer();
            Query query = params.getQuery(analyzer);

            Hits hits;
            if (params.shouldSort()) {
                Sort sort = params.getOrdering();
                if (logger.isDebugEnabled()) {
                    logger.debug("Searching with sort. Sort: " + Arrays.toString(sort.getSort()));
                }
                hits = indexSearcher.search(query, sort);
            } else {
                logger.debug("Searching without sort");
                hits = indexSearcher.search(query);
            }

            // Examine the Hits object to see if there were any matches
            int hitCount = hits.length();
            if (logger.isDebugEnabled()) {
                logger.debug("hit count: " + hitCount + " for query: " + query.toString());
            }
            if (hitCount > 0) {
                if (params.getCount() != null) {
                    hitCount = Math.min(hitCount, params.getStartIndex() + params.getCount());
                }
                for (int i = params.getStartIndex() == null ? 0 : params.getStartIndex(); i < hitCount; i++) {
                    try {
                        Document document = hits.doc(i);

                        if (logger.isDebugEnabled()) {
                            StringBuilder sb = new StringBuilder();
                            for (Object field : document.getFields()) {
                                sb.append(document.get(field.toString())).append(", ");
                            }
                            logger.debug("Search found document: " + sb);
                        }

                        byte[] resultBytes = document
                                .getBinaryValue(SearchResult.getResultLabel(params.getLanguage()));
                        if (resultBytes != null) {
                            ObjectInputStream ois = new ObjectInputStream(
                                    new ByteArrayInputStream(resultBytes));
                            Object post = ois.readObject();
                            result.add(post);
                        }
                    } catch (Exception ex) {
                        logger.warn(
                                "There was an error preparing a search hit for the result list. The item will be excluded from the list. Message: "
                                        + ex.getMessage() + ". Type: " + ex.getClass());
                    }
                }
            }
            return new SearchResult(result, hits.length());
        } catch (ParseException pex) {
            logger.warn("Invalid Lucene search query in external search service. Service.name: " + name
                    + ". Message: " + pex.getMessage());
            throw new SystemException("Invalid Lucene search query. See warning logs for more information.");
        } catch (Throwable tr) {
            logger.error("Error when searching in external search service. Service.name: " + name
                    + ". Message: " + tr.getMessage() + ". Type: " + tr.getClass());
            logger.warn("Error when updating index for external search service. Service.name: " + name, tr);
            throw new SystemException("Error in Lucene search. See warning logs for more information.");
        }
    }

    return new SearchResult(Collections.emptyList(), 0);
}

---

From source file:org.opencms.search.CmsSearchIndex.java

License:Open Source License

/**
 * Checks if the score for the results must be calculated based on the provided sort option.<p>  
 * //from   w w  w .j ava 2  s  . c o m
 * Since Lucene 3 apparently the score is no longer calculated by default, but only if the 
 * searcher is explicitly told so. This methods checks if, based on the given sort, 
 * the score must be calculated.<p> 
 * 
 * @param searcher the index searcher to prepare 
 * @param sort the sort option to use
 */
protected void prepareSortScoring(IndexSearcher searcher, Sort sort) {

    boolean doScoring = false;
    if (sort != null) {
        if ((sort == CmsSearchParameters.SORT_DEFAULT) || (sort == CmsSearchParameters.SORT_TITLE)) {
            // these default sorts do need score calculation
            doScoring = true;
        } else if ((sort == CmsSearchParameters.SORT_DATE_CREATED)
                || (sort == CmsSearchParameters.SORT_DATE_LASTMODIFIED)) {
            // these default sorts don't need score calculation
            doScoring = false;
        } else {
            // for all non-defaults: check if the score field is present, in that case we must calculate the score
            SortField[] fields = sort.getSort();
            for (SortField field : fields) {
                if (field == SortField.FIELD_SCORE) {
                    doScoring = true;
                    break;
                }
            }
        }
    }
    searcher.setDefaultFieldSortScoring(doScoring, doScoring);
}

---

From source file:org.uberfire.ext.metadata.backend.elastic.index.ElasticSearchIndexProvider.java

License:Apache License

protected Optional<SearchResponse> findByQueryRaw(List<String> indices, Query query, Sort sort, int limit) {
    try {//ww w.  j av  a2 s . c  o  m

        List<String> indexes = indices;
        if (indices.isEmpty()) {
            indexes = this.getIndices();
        }
        QueryStringQueryBuilder queryBuilder = QueryBuilders
                .queryStringQuery(escapeSpecialCharacters(query.toString()));
        SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
        searchSourceBuilder.query(queryBuilder);
        if (sort != null) {
            Arrays.stream(sort.getSort()).filter(sortField -> sortField.getField() != null)
                    .forEach(sortField -> {
                        addSort(searchSourceBuilder, sortField);
                    });
        }
        if (limit > 0 && limit <= ELASTICSEARCH_MAX_SIZE) {
            searchSourceBuilder.size(limit);
        } else {
            searchSourceBuilder.size(ELASTICSEARCH_MAX_SIZE);
        }
        return Optional
                .of(this.getClient().prepareSearch(sanitizeIndexes(indexes).toArray(new String[indexes.size()]))
                        .setSource(searchSourceBuilder).get());
    } catch (ElasticsearchException e) {
        logger.debug(MessageFormat.format("Can't perform search: {0}", e.getMessage()));
    }
    return Optional.empty();
}

---

From source file:org.uberfire.ext.metadata.backend.infinispan.ickl.IckleConverter.java

License:Apache License

public String convert(Sort sort) {

    if (sort == null || sort.getSort() == null) {
        return "";
    }//from ww  w. j  ava2 s. c  o m

    List<SortField> fields = Arrays.asList(sort.getSort());

    String sortString = fields.stream().filter(sortField -> sortField.getField() != null).map(sortField -> {
        String key = this.converterImpl.convertKey(sortField.getField());
        String sortDirection = ASC;
        if (sortField.getReverse()) {
            sortDirection = DESC;
        }
        return key + " " + sortDirection;
    }).collect(Collectors.joining(","));

    return sortString;
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• »