org.geotools.data.Query.setPropertyNames()方法的使用及代码示例

x33g5p2x  于2022-01-28 转载在 其他  
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本文整理了Java中org.geotools.data.Query.setPropertyNames方法的一些代码示例，展示了Query.setPropertyNames的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Query.setPropertyNames方法的具体详情如下：
包路径：org.geotools.data.Query
类名称：Query
方法名：setPropertyNames

Query.setPropertyNames介绍

[英]Set the names of the properties that this Query should retrieve as part of the returned org.geotools.feature.FeatureCollection.

The available properties can be determined with FeatureSource#getSchema(). If properties that are not part of the source's schema are requested an exception will be thrown.
[中]设置此查询应作为返回组织的一部分检索的属性的名称。地理工具。特色特色系列。
可用属性可通过FeatureSource#getSchema（）确定。如果请求不属于源架构的属性，则会引发异常。

代码示例

代码示例来源：origin: geoserver/geoserver

  1. /** Returns a GeoTools query build with the provided attributes and filters */
  2. private Query buildQuery(List<PropertyName> attributes, Filter filter) {
  3.   if (attributes == null && (filter == null || filter == Filter.INCLUDE)) {
  4.     return Query.ALL;
  5.   } else {
  6.     Query q = new Query();
  7.     q.setFilter(filter);
  8.     // TODO: switch this to property names when possible
  9.     q.setPropertyNames(flattenNames(attributes));
  10.     return q;
  11.   }
  12. }

代码示例来源：origin: geotools/geotools

  1. /**
  2.  * Constructor.
  3.  *
  4.  * @param typeName the name of the featureType to retrieve.
  5.  * @param namespace Namespace for provided typeName, or null if unspecified
  6.  * @param filter the OGC filter to constrain the request.
  7.  * @param maxFeatures the maximum number of features to be returned.
  8.  * @param propNames an array of the properties to fetch.
  9.  * @param handle the name to associate with the query.
  10.  */
  11. public Query(
  12.     String typeName,
  13.     URI namespace,
  14.     Filter filter,
  15.     int maxFeatures,
  16.     String[] propNames,
  17.     String handle) {
  18.   this.typeName = typeName;
  19.   this.filter = filter;
  20.   this.namespace = namespace;
  21.   this.maxFeatures = maxFeatures;
  22.   this.handle = handle;
  23.   setPropertyNames(propNames);
  24. }

代码示例来源：origin: geoserver/geoserver

  1. defQuery.setPropertyNames(propNames);

代码示例来源：origin: geoserver/geoserver

  1. query.setFilter(rangeFilter);
  2. query.setMaxFeatures(maxEntries);
  3. query.setPropertyNames(new String[] {descriptor.getStartAttribute()});
  4. query.setHints(new Hints(StructuredCoverageViewReader.QUERY_FIRST_BAND, true));

代码示例来源：origin: geotools/geotools

  1. @Override
  2. public int getCount(Query query) throws IOException {
  3.   // transforming does not change count, but we have to transform the filter
  4.   Query txQuery = transformer.transformQuery(query);
  5.   txQuery.setPropertyNames(Query.ALL_NAMES);
  6.   // let the world know
  7.   if (LOGGER.isLoggable(Level.FINE)) {
  8.     LOGGER.log(
  9.         Level.FINE,
  10.         "The original query for count computation{0} has been transformed to {1}",
  11.         new Object[] {query, txQuery});
  12.   }
  13.   return source.getCount(txQuery);
  14. }

代码示例来源：origin: geotools/geotools

  1. /**
  2.  * @param metadataName
  3.  * @param attributeName
  4.  * @return
  5.  * @throws IOException
  6.  */
  7. FeatureCalc createExtremaQuery(String metadataName, String attributeName) throws IOException {
  8.   final Query query = new Query(typeName);
  9.   query.setPropertyNames(Arrays.asList(attributeName));
  10.   final FeatureCalc visitor =
  11.       metadataName.toLowerCase().endsWith("maximum")
  12.           ? new MaxVisitor(attributeName)
  13.           : new MinVisitor(attributeName);
  14.   granuleCatalog.computeAggregateFunction(query, visitor);
  15.   return visitor;
  16. }

代码示例来源：origin: geotools/geotools

  1. /**
  2.  * Extract the domain of a dimension as a set of unique values.
  3.  *
  4.  * <p>It retrieves a comma separated list of values as a Set of {@link String}.
  5.  *
  6.  * @return a comma separated list of values as a {@link String}.
  7.  * @throws IOException
  8.  */
  9. Set extractDomain(final String attribute) throws IOException {
  10.   Query query = new Query(typeName);
  11.   query.setPropertyNames(Arrays.asList(attribute));
  12.   final UniqueVisitor visitor = new UniqueVisitor(attribute);
  13.   granuleCatalog.computeAggregateFunction(query, visitor);
  14.   return visitor.getUnique();
  15. }

代码示例来源：origin: geotools/geotools

  1. public boolean isEmpty() {
  2.   // build a minimal query
  3.   Query notEmptyQuery = new Query(query);
  4.   notEmptyQuery.setMaxFeatures(1);
  5.   AttributeDescriptor smallAttribute = getSmallAttributeInSchema();
  6.   if (smallAttribute != null) {
  7.     notEmptyQuery.setPropertyNames(
  8.         Collections.singletonList(smallAttribute.getLocalName()));
  9.   }
  10.   try {
  11.     FeatureReader<?, ?> fr = featureSource.getReader(notEmptyQuery);
  12.     try {
  13.       return !fr.hasNext();
  14.     } finally {
  15.       fr.close();
  16.     }
  17.   } catch (IOException e) {
  18.     throw new RuntimeException(e);
  19.   }
  20. }

代码示例来源：origin: geotools/geotools

  1. private List<String> collectFilesFromTable(DataStore sourceStore, String table)
  2.     throws IOException {
  3.   final SimpleFeatureSource featureSource = sourceStore.getFeatureSource(table);
  4.   final Properties properties = getCoverageConfiguration(table);
  5.   String locationAttribute =
  6.       getProperty(
  7.           properties,
  8.           Utils.Prop.LOCATION_ATTRIBUTE,
  9.           Utils.DEFAULT_LOCATION_ATTRIBUTE);
  10.   PathType pathType =
  11.       PathType.RELATIVE.valueOf(
  12.           getProperty(properties, Utils.Prop.PATH_TYPE, PathType.ABSOLUTE.name()));
  13.   // query the location attribute
  14.   Query q = new Query(table);
  15.   q.setPropertyNames(new String[] {locationAttribute});
  16.   // extract unique values
  17.   UniqueVisitor uniqueLocations = new UniqueVisitor(locationAttribute);
  18.   featureSource.getFeatures(q).accepts(uniqueLocations, null);
  19.   Set<String> locations = uniqueLocations.getUnique();
  20.   // map via pathtype and return
  21.   return locations
  22.       .stream()
  23.       .map(l -> pathType.resolvePath(configuration.getMosaicDirectory().getPath(), l))
  24.       .map(url -> URLs.urlToFile(url).getAbsolutePath())
  25.       .collect(Collectors.toList());
  26. }

代码示例来源：origin: geotools/geotools

  1. @Test
  2. public void testRetypeCannotSortFullyCovered() throws Exception {
  3.   Query q = new Query();
  4.   q.setPropertyNames(
  5.       new String[] {
  6.         "name",
  7.       });
  8.   q.setSortBy(new SortBy[] {ff.sort("z", SortOrder.ASCENDING)});
  9.   Query expected = new Query(q);
  10.   expected.setPropertyNames(new String[] {"name", "z"});
  11.   checkRetypeCannotSort(q, expected);
  12. }

代码示例来源：origin: geotools/geotools

  1. @Test
  2. public void testRetypeCannotSortPartiallyCovered() throws Exception {
  3.   Query q = new Query();
  4.   q.setPropertyNames(
  5.       new String[] {
  6.         "name",
  7.       });
  8.   q.setSortBy(
  9.       new SortBy[] {
  10.         ff.sort("name", SortOrder.ASCENDING), ff.sort("z", SortOrder.ASCENDING)
  11.       });
  12.   Query expected = new Query(q);
  13.   expected.setPropertyNames(new String[] {"name", "z"});
  14.   checkRetypeCannotSort(q, expected);
  15. }

代码示例来源：origin: geotools/geotools

  1. @Test
  2. public void testRetypeCannotSortCovered() throws Exception {
  3.   Query q = new Query();
  4.   q.setPropertyNames(new String[] {"name", "z"});
  5.   q.setSortBy(new SortBy[] {ff.sort("z", SortOrder.ASCENDING)});
  6.   checkRetypeCannotSort(q, q);
  7. }

代码示例来源：origin: geotools/geotools

  1. /** Test of retrieveAllProperties method, of class org.geotools.data.Query. */
  2. public void testRetrieveAllProperties() {
  3.   // System.out.println("testRetrieveAllProperties");
  4.   Query query = new Query();
  5.   assertTrue(query.retrieveAllProperties());
  6.   query.setPropertyNames(new String[] {"foo", "bar"});
  7.   assertFalse(query.retrieveAllProperties());
  8.   query.setPropertyNames(Query.ALL_NAMES);
  9.   assertTrue(query.retrieveAllProperties());
  10.   query.setProperties(Query.ALL_PROPERTIES);
  11.   assertTrue(query.retrieveAllProperties());
  12.   query.setPropertyNames(new String[] {"foo", "bar"});
  13.   query.setProperties(Query.ALL_PROPERTIES);
  14.   assertTrue(query.retrieveAllProperties());
  15. }

代码示例来源：origin: geotools/geotools

  1. /** Test of getPropertyNames method, of class org.geotools.data.Query. */
  2. public void testPropertyNames() {
  3.   // System.out.println("testPropertyNames");
  4.   Query query = new Query();
  5.   assertNull(query.getPropertyNames());
  6.   query.setPropertyNames(new String[] {"foo", "bar"});
  7.   String names[] = query.getPropertyNames();
  8.   assertNotNull(names);
  9.   assertEquals("foo", names[0]);
  10.   List list = Arrays.asList(names);
  11.   query.setPropertyNames(list);
  12.   names = query.getPropertyNames();
  13.   assertEquals("bar", names[1]);
  14.   // test compatibility with getProperties method
  15.   List<PropertyName> properties2 = query.getProperties();
  16.   assertNotNull(properties2);
  17.   assertEquals("foo", properties2.get(0).getPropertyName());
  18.   assertEquals("bar", properties2.get(1).getPropertyName());
  19.   query.setPropertyNames(Query.ALL_NAMES);
  20.   assertNull(query.getPropertyNames());
  21.   query = new Query("Test", Filter.INCLUDE, new String[] {"foo", "wibble"});
  22.   assertNotNull(query.getPropertyNames());
  23. }

代码示例来源：origin: geotools/geotools

  1. public void testGetFeatureInvalidFilter() throws Exception {
  2.   FilterFactory ff = CommonFactoryFinder.getFilterFactory(null);
  3.   PropertyIsEqualTo f = ff.equals(ff.property("invalidAttribute"), ff.literal(5));
  4.   Query q = new Query(tname("river"));
  5.   q.setPropertyNames(new String[] {aname("geom")});
  6.   q.setFilter(f);
  7.   // make sure a complaint related to the invalid filter is thrown here
  8.   try (FeatureReader<SimpleFeatureType, SimpleFeature> reader =
  9.       dataStore.getFeatureReader(q, Transaction.AUTO_COMMIT)) {
  10.     fail("This query should have failed, it contains an invalid filter");
  11.   } catch (Exception e) {
  12.     // good, it's supposed to fail
  13.   }
  14. }

代码示例来源：origin: geotools/geotools

  1. /** Test of toString method, of class org.geotools.data.Query. */
  2.   public void testToString() {
  3.     // System.out.println("testToString");
  4.     Query query = new Query();
  5.     assertNotNull(query.toString());
  7.     query.setHandle("myquery");
  8.     assertNotNull(query.toString());
  10.     query.setFilter(Filter.EXCLUDE);
  11.     assertNotNull(query.toString());
  13.     query.setPropertyNames(new String[] {"foo", "bar"});
  14.     assertNotNull(query.toString());
  16.     query = new Query();
  17.     query.setSortBy(new SortBy[] {SortBy.NATURAL_ORDER});
  18.     assertTrue(query.toString().contains("[sort by: NATURAL]"));
  19.     query.setSortBy(new SortBy[] {SortBy.REVERSE_ORDER});
  20.     assertTrue(query.toString().contains("[sort by: REVERSE]"));
  21.   }
  22. }

代码示例来源：origin: geotools/geotools

  1. public void testGetFeatureReaderFilterPrePostWithNoGeometry()
  2.     throws IOException, IllegalFilterException {
  3.   // GEOT-1069, make sure the post filter is run even if the geom property is not requested
  4.   try (Transaction t = new DefaultTransaction()) {
  5.     FilterFactory factory = CommonFactoryFinder.getFilterFactory(null);
  6.     FilterFunction_geometryType geomTypeExpr = new FilterFunction_geometryType();
  7.     geomTypeExpr.setParameters(
  8.         (List) Collections.singletonList(factory.property(aname("geom"))));
  9.     PropertyIsEqualTo filter = factory.equals(geomTypeExpr, factory.literal("Polygon"));
  10.     Query query = new Query(tname("road"), filter);
  11.     query.setPropertyNames((List) Collections.singletonList(aname("id")));
  12.     try (FeatureReader<SimpleFeatureType, SimpleFeature> reader =
  13.         dataStore.getFeatureReader(query, t)) {
  14.       // if the above statement didn't throw an exception, we're content
  15.       assertNotNull(reader);
  16.     }
  17.     filter = factory.equals(geomTypeExpr, factory.literal("LineString"));
  18.     query.setFilter(filter);
  19.     try (FeatureReader<SimpleFeatureType, SimpleFeature> reader =
  20.         dataStore.getFeatureReader(query, t)) {
  21.       assertTrue(reader.hasNext());
  22.     }
  23.   }
  24. }

代码示例来源：origin: geotools/geotools

  1. public void testGetFeatureReaderFilterWithAttributesNotRequested2() throws Exception {
  2.   SimpleFeatureType type = dataStore.getSchema(tname("river"));
  3.   FilterFactory ff = CommonFactoryFinder.getFilterFactory(null);
  4.   FilterFunction_ceil ceil = new FilterFunction_ceil();
  5.   ceil.setParameters((List) Collections.singletonList(ff.property(aname("flow"))));
  6.   PropertyIsEqualTo f = ff.equals(ceil, ff.literal(5));
  7.   Query q = new Query(tname("river"));
  8.   q.setPropertyNames(new String[] {aname("geom")});
  9.   q.setFilter(f);
  10.   // with GEOT-1069 an exception is thrown here
  11.   try (Transaction t = new DefaultTransaction();
  12.       FeatureReader<SimpleFeatureType, SimpleFeature> reader =
  13.           dataStore.getFeatureReader(q, t)) {
  14.     assertTrue(reader.hasNext());
  15.     assertEquals(1, reader.getFeatureType().getAttributeCount());
  16.     reader.next();
  17.     assertFalse(reader.hasNext());
  18.   }
  19. }

代码示例来源：origin: geotools/geotools

  1. public void testGetFeaturesWithQuery() throws Exception {
  2.   FilterFactory ff = dataStore.getFilterFactory();
  3.   PropertyIsEqualTo filter =
  4.       ff.equals(ff.property(aname("stringProperty")), ff.literal("one"));
  5.   Query query = new Query();
  6.   query.setPropertyNames(new String[] {aname("doubleProperty"), aname("intProperty")});
  7.   query.setFilter(filter);
  8.   SimpleFeatureCollection features = featureSource.getFeatures(query);
  9.   assertEquals(1, features.size());
  10.   try (SimpleFeatureIterator iterator = features.features()) {
  11.     assertTrue(iterator.hasNext());
  12.     SimpleFeature feature = (SimpleFeature) iterator.next();
  13.     assertEquals(2, feature.getAttributeCount());
  14.     assertEquals(new Double(1.1), feature.getAttribute(aname("doubleProperty")));
  15.     assertNotNull(feature.getAttribute(aname("intProperty")));
  16.   }
  17. }

代码示例来源：origin: geotools/geotools

  1. public void testGetFeatureReaderFilterWithAttributesNotRequested() throws Exception {
  2.   // this is here to avoid http://jira.codehaus.org/browse/GEOT-1069
  3.   // to come up again
  4.   SimpleFeatureType type = dataStore.getSchema(tname("river"));
  5.   FilterFactory ff = CommonFactoryFinder.getFilterFactory(null);
  6.   PropertyIsEqualTo f = ff.equals(ff.property(aname("flow")), ff.literal(4.5));
  7.   Query q = new Query(tname("river"));
  8.   q.setPropertyNames(new String[] {aname("geom")});
  9.   q.setFilter(f);
  10.   // with GEOT-1069 an exception is thrown here
  11.   try (Transaction t = new DefaultTransaction();
  12.       FeatureReader<SimpleFeatureType, SimpleFeature> reader =
  13.           dataStore.getFeatureReader(q, t)) {
  14.     assertTrue(reader.hasNext());
  15.     assertEquals(1, reader.getFeatureType().getAttributeCount());
  16.     reader.next();
  17.     assertFalse(reader.hasNext());
  18.   }
  19. }

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