Package org.gvsig.fmap.geom.jts.operation.fromwkt

Class WKTParser

java.lang.Object
org.gvsig.fmap.geom.jts.operation.fromwkt.WKTParser
public class WKTParser extends Object
Converts a Well-Known Text string to a Geometry.

The WKTReader allows extracting Geometry objects from either input streams or internal strings. This allows it to function as a parser to read Geometry objects from text blocks embedded in other data formats (e.g. XML).

The Well-known Text format is defined in the OpenGIS Simple Features Specification for SQL .

Note: There is an inconsistency in the SFS. The WKT grammar states that MultiPoints are represented by MULTIPOINT ( ( x y), (x y) ) , but the examples show MultiPoints as MULTIPOINT ( x y, x y ) . Other implementations follow the latter syntax, so JTS will adopt it as well. A WKTReader is parameterized by a GeometryFactory , to allow it to create Geometry objects of the appropriate implementation. In particular, the GeometryFactory will determine the PrecisionModel and SRID that is used.

The WKTReader will convert the input numbers to the precise internal representation. Reads non-standard "LINEARRING" tags.

Version:
1.5

  • Constructor Summary

    Constructors
    Constructor
    Description
    WKTParser()
    Creates a WKTReader that creates objects using a basic GeometryFactory.

  • Method Summary

    Modifier and Type
    Method
    Description
    org.gvsig.fmap.geom.Geometry
    read(Reader reader)
    Converts a Well-known Text representation to a Geometry.
    org.gvsig.fmap.geom.Geometry
    read(String wellKnownText)
    Converts a Well-known Text representation to a Geometry.

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • WKTParser

      public WKTParser()
      Creates a WKTReader that creates objects using a basic GeometryFactory.

  • Method Details

    • read

      public org.gvsig.fmap.geom.Geometry read(String wellKnownText) throws com.vividsolutions.jts.io.ParseException
      Converts a Well-known Text representation to a Geometry.
      Parameters:
      wellKnownText - one or more strings (see the OpenGIS Simple Features Specification) separated by whitespace
      Returns:
      a Geometry specified by wellKnownText
      Throws:
      com.vividsolutions.jts.io.ParseException - if a parsing problem occurs

    • read

      public org.gvsig.fmap.geom.Geometry read(Reader reader) throws com.vividsolutions.jts.io.ParseException
      Converts a Well-known Text representation to a Geometry.
      Parameters:
      reader - a Reader which will return a string (see the OpenGIS Simple Features Specification)
      Returns:
      a Geometry read from reader
      Throws:
      com.vividsolutions.jts.io.ParseException - if a parsing problem occurs