import org.opengis.filter.sort.SortOrder; //导入依赖的package包/类
@Override
public void setValueAt(Object aValue, int row, int column) {
    SortBy obj = dataList.get(row);

    switch (column) {
    case 0:
        break;
    case COL_SORT_ORDER: {
        Boolean b = (Boolean) aValue;

        SortOrder sortOrder = b.booleanValue() ? SortOrder.ASCENDING : SortOrder.DESCENDING;
        ((SortByImpl) obj).setSortOrder(sortOrder);

        fireTableCellUpdated(row, column);

        if (parentObj != null) {
            parentObj.sortOrderUpdated();
        }
        break;
    }
    default:
        break;
    }
}
 

import org.opengis.filter.sort.SortOrder; //导入依赖的package包/类
static void secondaryIndexExample(String simpleFeatureTypeName,
                                  DataStore dataStore,
                                  String[] attributeFields,
                                  String attributesQuery,
                                  int maxFeatures,
                                  String sortByField)
        throws CQLException, IOException {

    // construct a (E)CQL filter from the search parameters,
    // and use that as the basis for the query
    Filter cqlFilter = CQL.toFilter(attributesQuery);
    Query query = new Query(simpleFeatureTypeName, cqlFilter);

    query.setPropertyNames(attributeFields);
    query.setMaxFeatures(maxFeatures);

    if (!sortByField.equals("")) {
        FilterFactory2 ff = CommonFactoryFinder.getFilterFactory2();
        SortBy[] sort = new SortBy[]{ff.sort(sortByField, SortOrder.DESCENDING)};
        query.setSortBy(sort);
    }

    // submit the query, and get back an iterator over matching features
    FeatureSource featureSource = dataStore.getFeatureSource(simpleFeatureTypeName);
    FeatureIterator featureItr = featureSource.getFeatures(query).features();

    // loop through all results
    int n = 0;
    while (featureItr.hasNext()) {
        Feature feature = featureItr.next();
        StringBuilder sb = new StringBuilder();
        sb.append("Feature ID ").append(feature.getIdentifier());

        for (String field : attributeFields) {
            sb.append(" | ").append(field).append(": ").append(feature.getProperty(field).getValue());
        }
        System.out.println(sb.toString());
    }
    featureItr.close();
}
 

import org.opengis.filter.sort.SortOrder; //导入依赖的package包/类
static void secondaryIndexExample(String simpleFeatureTypeName,
                                  DataStore dataStore,
                                  String[] attributeFields,
                                  String attributesQuery,
                                  int maxFeatures,
                                  String sortByField)
        throws CQLException, IOException {

    // construct a (E)CQL filter from the search parameters,
    // and use that as the basis for the query
    Filter cqlFilter = CQL.toFilter(attributesQuery);
    Query query = new Query(simpleFeatureTypeName, cqlFilter);

    query.setPropertyNames(attributeFields);
    query.setMaxFeatures(maxFeatures);

    if (!sortByField.equals("")) {
        FilterFactory2 ff = CommonFactoryFinder.getFilterFactory2();
        SortBy[] sort = new SortBy[]{ff.sort(sortByField, SortOrder.DESCENDING)};
        query.setSortBy(sort);
    }

    // submit the query, and get back an iterator over matching features
    FeatureSource featureSource = dataStore.getFeatureSource(simpleFeatureTypeName);
    FeatureIterator featureItr = featureSource.getFeatures(query).features();

    // loop through all results
    while (featureItr.hasNext()) {
        Feature feature = featureItr.next();
        StringBuilder sb = new StringBuilder();
        sb.append("Feature ID ").append(feature.getIdentifier());

        for (String field : attributeFields) {
            sb.append(" | ").append(field).append(": ").append(feature.getProperty(field).getValue());
        }
        System.out.println(sb.toString());
    }
    featureItr.close();
}
 

import org.opengis.filter.sort.SortOrder; //导入依赖的package包/类
/**
 * sort the features so no wider polygon covers a smaller polygon.
 * 
 * @param inCollection
 * @return
 */
private SimpleFeatureCollection sortCollection(final SimpleFeatureCollection inCollection) {
	// seems as the sorting does not work with doubles, so this is sorting the indirect way by using the agg_count
	// instead
	SortBy sortBy = CommonFactoryFinder.getFilterFactory().sort(AGG_COUNT_ATTRIBUTE_NAME,
               SortOrder.DESCENDING);
	SimpleFeatureCollection sortedOutputCollection = inCollection.sort(sortBy);
	return sortedOutputCollection;
}
 

import org.opengis.filter.sort.SortOrder; //导入依赖的package包/类
private ElasticRequest prepareSearchRequest(Query query, boolean scroll) throws IOException {
    String naturalSortOrder = SortOrder.ASCENDING.toSQL().toLowerCase();
    final ElasticRequest searchRequest = new ElasticRequest();
    final ElasticDataStore dataStore = getDataStore();
    final String docType = dataStore.getDocType(entry.getName());

    LOGGER.fine("Preparing " + docType + " (" + entry.getName() + ") query");
    if (!scroll) {
        if (query.getSortBy()!=null){
            for (final SortBy sort : query.getSortBy()) {
                final String sortOrder = sort.getSortOrder().toSQL().toLowerCase();
                if (sort.getPropertyName() != null) {
                    final String name = sort.getPropertyName().getPropertyName();
                    searchRequest.addSort(name, sortOrder);
                } else {
                    naturalSortOrder = sortOrder;
                }
            }
        }

        // pagination
        searchRequest.setSize(getSize(query));
        searchRequest.setFrom(getStartIndex(query));
    } else {
        if (dataStore.getScrollSize() != null) {
            searchRequest.setSize(dataStore.getScrollSize().intValue());
        }
        if (dataStore.getScrollTime() != null) {
            searchRequest.setScroll(dataStore.getScrollTime());
        }
    }

    if (dataStore.isSourceFilteringEnabled()) {
        // add source includes
        setSourceIncludes(searchRequest);
    }

    // add query and post filter
    final FilterToElastic filterToElastic = new FilterToElastic();
    filterToElastic.setFeatureType(buildFeatureType());
    filterToElastic.encode(query);
    filterFullySupported = filterToElastic.getFullySupported();
    if (!filterFullySupported) {
        LOGGER.fine("Filter is not fully supported by native Elasticsearch."
                + " Additional post-query filtering will be performed.");
    }
    final Map<String,Object> queryBuilder = filterToElastic.getQueryBuilder();

    final Map<String,Object> nativeQueryBuilder = filterToElastic.getNativeQueryBuilder();

    searchRequest.setQuery(queryBuilder);

    if (isSort(query) && nativeQueryBuilder.equals(ElasticConstants.MATCH_ALL)) {
        searchRequest.addSort("_uid", naturalSortOrder);
    }

    if (filterToElastic.getAggregations() != null) {
        final Map<String, Map<String, Map<String, Object>>> aggregations = filterToElastic.getAggregations();
        final Envelope envelope = (Envelope) query.getFilter().accept(ExtractBoundsFilterVisitor.BOUNDS_VISITOR, null);
        final long gridSize;
        if (dataStore.getGridSize() != null) {
            gridSize = dataStore.getGridSize();
        } else {
            gridSize = (Long) ElasticDataStoreFactory.GRID_SIZE.getDefaultValue();
        }
        final double gridThreshold;
        if (dataStore.getGridThreshold() != null) {
            gridThreshold = dataStore.getGridThreshold();
        } else {
            gridThreshold = (Double) ElasticDataStoreFactory.GRID_THRESHOLD.getDefaultValue();
        }
        final int precision = GeohashUtil.computePrecision(envelope, gridSize, gridThreshold);
        LOGGER.fine("Updating GeoHash grid aggregation precision to " + precision);
        GeohashUtil.updateGridAggregationPrecision(aggregations, precision);
        searchRequest.setAggregations(aggregations);
        searchRequest.setSize(0);
    }

    return searchRequest;
}
 

import org.opengis.filter.sort.SortOrder; //导入依赖的package包/类
@Test
public void testGetFeaturesWithSort() throws Exception {
    init();
    FilterFactory ff = dataStore.getFilterFactory();
    SortBy sort = ff.sort("vendor_s", SortOrder.ASCENDING);
    Query query = new Query();
    query.setSortBy(new SortBy[] { sort });

    SimpleFeatureCollection features = featureSource.getFeatures(query);
    assertEquals(11, features.size());

    SimpleFeatureIterator iterator = features.features();
    SimpleFeature f;
    try {
        assertTrue(iterator.hasNext());
        f = iterator.next();
        assertEquals("Asus", f.getAttribute("vendor_s"));
        assertTrue(iterator.hasNext());
        f = iterator.next();
        assertEquals("Cisco", f.getAttribute("vendor_s"));
        assertTrue(iterator.hasNext());
        f = iterator.next();
        assertEquals("Cisco", f.getAttribute("vendor_s"));
    } finally {
        iterator.close();
    }

    sort = ff.sort("vendor_s", SortOrder.DESCENDING);
    query.setSortBy(new SortBy[] { sort });
    features = featureSource.getFeatures(query);
    iterator = features.features();
    try {
        assertTrue(iterator.hasNext());
        f = iterator.next();
        assertEquals("TP-Link", f.getAttribute("vendor_s"));
        assertTrue(iterator.hasNext());
        f = iterator.next();
        assertEquals("Linksys", f.getAttribute("vendor_s"));
        assertTrue(iterator.hasNext());
        f = iterator.next();
        assertEquals("Linksys", f.getAttribute("vendor_s"));
    } finally {
        iterator.close();
    }
}
 

import org.opengis.filter.sort.SortOrder; //导入依赖的package包/类
/**
 * Checks if is ascending sort order.
 *
 * @param obj the obj
 * @return the boolean
 */
private static Boolean isAscendingSortOrder(SortBy obj) {
    return (obj.getSortOrder().name().compareTo(SortOrder.ASCENDING.name()) == 0);
}