Package org.h2gis.functions.io.geojson

Class GeoJsonWriteDriver

java.lang.Object

org.h2gis.functions.io.geojson.GeoJsonWriteDriver

public class GeoJsonWriteDriver
extends Object

A simple GeoJSON driver to write a spatial table to a GeoJSON file. GeoJSON is a format for encoding a variety of geographic data structures. A GeoJSON object may represent a geometry, a feature, or a collection of features. GeoJSON supports the following geometry types: POINT, LINESTRING, POLYGON, MULTIPOINT, MULTILINESTRING, MULTIPOLYGON, and GEOMETRYCOLLECTION. Syntax: { "type": "FeatureCollection", "features": [ { "type": "Feature", "geometry":{"type": "Point", "coordinates": [102.0, 0.5]}, "properties": {"prop0": "value0"} } ]}

Author:

Erwan Bocher, Hai Trung Pham

Constructor Summary

Constructors

Constructor	Description
GeoJsonWriteDriver(Connection connection)	A simple GeoJSON driver to write a spatial table to a GeoJSON file.

Method Summary

Modifier and Type	Method	Description
boolean	isSupportedPropertyType(String columnName, int sqlTypeId, String sqlTypeName)	Return true is the SQL type is supported by the GeoJSON driver.
void	write(org.h2gis.api.ProgressVisitor progress, String tableName, File fileName, String encoding, boolean deleteFile)	Write the spatial table to GeoJSON format.
void	write(org.h2gis.api.ProgressVisitor progress, ResultSet rs, File fileName, String encoding, boolean deleteFile)	Write a resulset to a geojson file

Methods inherited from class java.lang.Object

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

Constructor Detail

GeoJsonWriteDriver

public GeoJsonWriteDriver(Connection connection)

A simple GeoJSON driver to write a spatial table to a GeoJSON file.

Parameters:

connection - database connection

Method Detail

write

public void write(org.h2gis.api.ProgressVisitor progress,
                  ResultSet rs,
                  File fileName,
                  String encoding,
                  boolean deleteFile)
           throws SQLException,
                  IOException

Write a resulset to a geojson file

Parameters:

progress - Progress visitor following the execution.

rs - input resulset

fileName - the output file

encoding - file encoding

deleteFile - true to delete the file if exist

Throws:

SQLException

IOException

write

public void write(org.h2gis.api.ProgressVisitor progress,
                  String tableName,
                  File fileName,
                  String encoding,
                  boolean deleteFile)
           throws SQLException,
                  IOException

Write the spatial table to GeoJSON format.

Parameters:

progress - Progress visitor following the execution.

tableName - table name

fileName - input file

encoding - file encoding

deleteFile - true to delete the file if exist

Throws:

SQLException

IOException

isSupportedPropertyType

public boolean isSupportedPropertyType(String columnName,
                                       int sqlTypeId,
                                       String sqlTypeName)
                                throws SQLException

Return true is the SQL type is supported by the GeoJSON driver.

Parameters:

columnName - column name

sqlTypeId - sql type id

sqlTypeName - sql type name

Returns:

true if the column is supported

Throws:

SQLException