Package org.apache.sedona.core.formatMapper.shapefileParser

Class ShapefileReader

java.lang.Object

org.apache.sedona.core.formatMapper.shapefileParser.ShapefileReader

public class ShapefileReader
extends Object

Constructor Summary

Constructors

Constructor	Description
ShapefileReader()

Method Summary

Modifier and Type	Method	Description
static LineStringRDD	geometryToLineString(SpatialRDD geometryRDD)	convert geometry rdd to
static PointRDD	geometryToPoint(SpatialRDD geometryRDD)	convert geometry rdd to
static PolygonRDD	geometryToPolygon(SpatialRDD geometryRDD)	convert geometry rdd to
static BoundBox	readBoundBox(org.apache.spark.api.java.JavaSparkContext sc, String inputPath)	read and merge bound boxes of all shapefiles user input, if there is no, leave BoundBox null;
static List<String>	readFieldNames(org.apache.spark.api.java.JavaSparkContext sc, String inputPath)
static SpatialRDD<org.locationtech.jts.geom.Geometry>	readToGeometryRDD(org.apache.spark.api.java.JavaSparkContext sc, String inputPath)	read shapefile in inputPath with default GeometryFactory and return an RDD of Geometry.
static SpatialRDD<org.locationtech.jts.geom.Geometry>	readToGeometryRDD(org.apache.spark.api.java.JavaSparkContext sc, String inputPath, org.locationtech.jts.geom.GeometryFactory geometryFactory)	read shapefile in inputPath with customized GeometryFactory and return an RDD of Geometry.
static LineStringRDD	readToLineStringRDD(org.apache.spark.api.java.JavaSparkContext sc, String inputPath)	read shapefile and return as an LineStringRDD
static LineStringRDD	readToLineStringRDD(org.apache.spark.api.java.JavaSparkContext sc, String inputPath, org.locationtech.jts.geom.GeometryFactory geometryFactory)	read shapefile with customized GeometryFactory and return as an LineStringRDD
static PointRDD	readToPointRDD(org.apache.spark.api.java.JavaSparkContext sc, String inputPath)	read shapefile and return as an PointRDD
static PointRDD	readToPointRDD(org.apache.spark.api.java.JavaSparkContext sc, String inputPath, org.locationtech.jts.geom.GeometryFactory geometryFactory)	read shapefile with customized GeometryFactory and return as an PointRDD
static PolygonRDD	readToPolygonRDD(org.apache.spark.api.java.JavaSparkContext sc, String inputPath)	read shapefile and return as an PolygonRDD
static PolygonRDD	readToPolygonRDD(org.apache.spark.api.java.JavaSparkContext sc, String inputPath, org.locationtech.jts.geom.GeometryFactory geometryFactory)	read shapefile with customized GeometryFactory and return as an PolygonRDD

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ShapefileReader

public ShapefileReader()

Method Details

readToGeometryRDD

public static SpatialRDD<org.locationtech.jts.geom.Geometry> readToGeometryRDD(org.apache.spark.api.java.JavaSparkContext sc,
 String inputPath)

read shapefile in inputPath with default GeometryFactory and return an RDD of Geometry.

Parameters:

sc -

inputPath -

Returns:

readToGeometryRDD

public static SpatialRDD<org.locationtech.jts.geom.Geometry> readToGeometryRDD(org.apache.spark.api.java.JavaSparkContext sc,
 String inputPath,
 org.locationtech.jts.geom.GeometryFactory geometryFactory)

read shapefile in inputPath with customized GeometryFactory and return an RDD of Geometry.

Parameters:

sc -

inputPath -

geometryFactory -

Returns:

readBoundBox

public static BoundBox readBoundBox(org.apache.spark.api.java.JavaSparkContext sc,
 String inputPath)

read and merge bound boxes of all shapefiles user input, if there is no, leave BoundBox null;

readFieldNames

public static List<String> readFieldNames(org.apache.spark.api.java.JavaSparkContext sc,
 String inputPath)
                                   throws IOException

Parameters:

sc - Spark Context

inputPath - folder which contains shape file with dbf metadata file

Returns:

List of Strings if dbf file was found; return null if no dbf file

Throws:

IOException

readToPolygonRDD

public static PolygonRDD readToPolygonRDD(org.apache.spark.api.java.JavaSparkContext sc,
 String inputPath)

read shapefile and return as an PolygonRDD

Parameters:

sc -

inputPath -

Returns:

readToPolygonRDD

public static PolygonRDD readToPolygonRDD(org.apache.spark.api.java.JavaSparkContext sc,
 String inputPath,
 org.locationtech.jts.geom.GeometryFactory geometryFactory)

read shapefile with customized GeometryFactory and return as an PolygonRDD

Parameters:

sc -

inputPath -

geometryFactory -

Returns:

geometryToPolygon

public static PolygonRDD geometryToPolygon(SpatialRDD geometryRDD)

convert geometry rdd to

Parameters:

geometryRDD -

Returns:

readToPointRDD

public static PointRDD readToPointRDD(org.apache.spark.api.java.JavaSparkContext sc,
 String inputPath)

read shapefile and return as an PointRDD

Parameters:

sc -

inputPath -

Returns:

readToPointRDD

public static PointRDD readToPointRDD(org.apache.spark.api.java.JavaSparkContext sc,
 String inputPath,
 org.locationtech.jts.geom.GeometryFactory geometryFactory)

read shapefile with customized GeometryFactory and return as an PointRDD

Parameters:

sc -

inputPath -

geometryFactory -

Returns:

geometryToPoint

public static PointRDD geometryToPoint(SpatialRDD geometryRDD)

convert geometry rdd to

Parameters:

geometryRDD -

Returns:

readToLineStringRDD

public static LineStringRDD readToLineStringRDD(org.apache.spark.api.java.JavaSparkContext sc,
 String inputPath)

read shapefile and return as an LineStringRDD

Parameters:

sc -

inputPath -

Returns:

readToLineStringRDD

public static LineStringRDD readToLineStringRDD(org.apache.spark.api.java.JavaSparkContext sc,
 String inputPath,
 org.locationtech.jts.geom.GeometryFactory geometryFactory)

read shapefile with customized GeometryFactory and return as an LineStringRDD

Parameters:

sc -

inputPath -

geometryFactory -

Returns:

geometryToLineString

public static LineStringRDD geometryToLineString(SpatialRDD geometryRDD)

convert geometry rdd to

Parameters:

geometryRDD -

Returns: