Java Doc for GeometryAttributeType.java in » GIS » GeoTools-2.4.1 » org » geotools » feature » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » GIS » GeoTools 2.4.1 » org.geotools.feature

Source Cross Reference Class Diagram Java Document (Java Doc)

org.geotools.feature .GeometryAttributeType

All known Subclasses:   org.geotools.feature.type .GeometricAttributeType,
GeometryAttributeType
public interface GeometryAttributeType extends AttributeType,PrimativeAttributeType(Code)
A CoordinateSystem aware Geometry AttributeType.
This class is the bridge between our FeatureType/AttributeType classes and the CoordianteSystem.

This also allows access to the GeometryFactory used by this GeometryAttributeType parse( Object ) method.

With JTS14 you can use GeometryFactory to to provide your own CoordianteSequence representation. CoordinateSystem is given the responsiblity of providing this class for the GeometryAttributeType as only it knows the CoordianteSequence class and PercisionModel mosted suitable. It also may know an SRID number suitable for the GeometryFactory to use when constructing new Geometry objects.
It is recomended that the CoordinateSystem GeometryFactory also supply the CoordinateSystem as the value for Geometry.getUserData().

author:
   Jody Garnett, Refractions Research, Inc.

Method Summary
public CoordinateReferenceSystem getCoordinateSystem()
     Retrieve the CS_CoordinateSystem used by this GeometryAttributeType.
OUT OF DATE: The class CoordinateSystem holds a GeometryFactory that is used for creating new content.
public GeometryFactory getGeometryFactory()
     The Geometryfactory used for creating new content.
Filter getRestriction()
     Restriction is assumed to be in agreement with Geometry class indicated.
Class getType()
     Type must be an sub type of Geometry.class.
boolean isGeometry()


Method Detail
getCoordinateSystem
public CoordinateReferenceSystem getCoordinateSystem()(Code)
Retrieve the CS_CoordinateSystem used by this GeometryAttributeType.
OUT OF DATE: The class CoordinateSystem holds a GeometryFactory that is used for creating new content. By extension this includes the SRID, PercisionModel and CoordinateSequenceFactory information.
The coordinate reference system for this GeometryAttributeType

getGeometryFactory
public GeometryFactory getGeometryFactory()(Code)
The Geometryfactory used for creating new content.
Replace with the following code:
Map hints = new HashMap(); hints.put( CoordinateReferneceSystem.class, type.getCoordinateSystem() ); GeometryFactory gf = FactoryFinder.getGeometryFactory( Map hints ); // You can now use gf create methods
GeometryFactory used for new Content

getRestriction
Filter getRestriction()(Code)
Restriction is assumed to be in agreement with Geometry class indicated.
See Also:   org.geotools.feature.AttributeType.getRestriction

getType
Class getType()(Code)
Type must be an sub type of Geometry.class.
If this was java I would say Class. Warning this will need revisiting for Geotools 2.2 when GeoAPI Geometry enters use.

See Also:   org.geotools.feature.AttributeType.getType

isGeometry
boolean isGeometry()(Code)
Must return true
See Also:   org.geotools.feature.AttributeType.isGeometry

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