GeoWave实现简单的时空范围查询（HBase数据库）

GIS甲鱼哥2024-12-14 16:31

前言

上一篇文章中利用GeoWave导入矢量数据到HBase/Accumulo数据库-CSDN博客，我介绍了如何利用GeoWave导入数据到HBase/Accumulo数据库中，本文，我将介绍如何使用GeoWave实现简单的时空范围查询。

代码

java 复制代码

 HBaseRequiredOptions hBaseRequiredOptions = new HBaseRequiredOptions();
        hBaseRequiredOptions.setZookeeper("localhost:2181");

        HBaseDataStore hBaseDataStore = (HBaseDataStore) DataStoreFactory.createDataStore(hBaseRequiredOptions);
        System.out.println("connect hbase success!");

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
        Date startTime = sdf.parse("2013-01-01T12:10:01");
        Date endTime = sdf.parse("2013-01-31T12:11:01");
        // 使用 format()方法格式化时间
        String startTimeFormatted = sdf.format(startTime);
        String endTimeFormatted = sdf.format(endTime);

        Long startTimeStamp = System.currentTimeMillis();

        VectorQueryBuilder queryBuilder = VectorQueryBuilder.newBuilder();
        queryBuilder.indexName("track_point_idx");
        queryBuilder.addTypeName("track_point");
        VectorQueryConstraintsFactory vectorQueryConstraintsFactory = queryBuilder.constraintsFactory();



        Query<SimpleFeature> queryOptions = queryBuilder.constraints(vectorQueryConstraintsFactory.
                    cqlConstraints("BBOX(the_geom, 111.6, 21.31, 111.7, 21.41) " +
                    " and " + "( timestamp >= " + startTimeFormatted + " and timestamp <= " + endTimeFormatted + ")")).build();


        List<SimpleFeature> simpleFeatures = new ArrayList<>();
        try (final CloseableIterator<SimpleFeature> iterator =
                     hBaseDataStore.query(queryOptions)) {
            while (iterator.hasNext()) {
                SimpleFeature feature = iterator.next();
                simpleFeatures.add(feature);
            }
            System.out.println("size:" + simpleFeatures.size());
        }

参考资料

GeoWave Developer Guide