org.geotools.geometry.jts

Class JTSFactoryFinder

Object

FactoryFinder

JTSFactoryFinder

public class JTSFactoryFinder
extends FactoryFinder

Defines static methods used to access geometry, coordinate sequence or precision model factories.

Author:

Martin Desruisseaux

Field Summary

Fields inherited from class FactoryFinder

EMPTY_HINTS

Method Summary

Modifier and Type	Method and Description
static Set	getCoordinateSequenceFactories() Returns a set of all available implementations for the CoordinateSequenceFactory interface.
static CoordinateSequenceFactory	getCoordinateSequenceFactory(Hints hints) Returns the first implementation of CoordinateSequenceFactory matching the specified hints.
static Set	getGeometryFactories() Returns a set of all available implementations for the GeometryFactory category.
static GeometryFactory	getGeometryFactory() Returns the first implementation of GeometryFactory, a new one is created if possible or an exception is thrown otherwise.
static GeometryFactory	getGeometryFactory(Hints hints) Returns the first implementation of GeometryFactory matching the specified hints.
static PrecisionModel	getPrecisionModel(Hints hints) Returns the first implementation of PrecisionModel matching the specified hints.
static Set	getPrecisionModels() Returns a set of all available implementations for the PrecisionModel category.
static void	scanForPlugins() Scans for factory plug-ins on the application class path.

Methods inherited from class FactoryFinder

mergeSystemHints

Methods inherited from class Object

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

Method Detail

getGeometryFactory

public static GeometryFactory getGeometryFactory(Hints hints)
                                          throws FactoryRegistryException

Returns the first implementation of GeometryFactory matching the specified hints. If no implementation matches, a new one is created if possible or an exception is thrown otherwise.

Hints that may be understood includes JTS_COORDINATE_SEQUENCE_FACTORY, JTS_PRECISION_MODEL and JTS_SRID.

Parameters:

hints - An optional map of hints, or null if none.

Returns:

The first geometry factory that matches the supplied hints.

Throws:

FactoryRegistryException - if no implementation was found or can be created for the GeometryFactory category and the given hints.

getGeometryFactory

public static GeometryFactory getGeometryFactory()
                                          throws FactoryRegistryException

Returns the first implementation of GeometryFactory, a new one is created if possible or an exception is thrown otherwise.

Returns:

The first geometry factory available on the classpath

Throws:

FactoryRegistryException - if no implementation was found or can be created for the GeometryFactory category.

getGeometryFactories

public static Set getGeometryFactories()

Returns a set of all available implementations for the GeometryFactory category.

Returns:

Set of available geometry factory implementations.

getPrecisionModel

public static PrecisionModel getPrecisionModel(Hints hints)
                                        throws FactoryRegistryException

Returns the first implementation of PrecisionModel matching the specified hints. If no implementation matches, a new one is created if possible or an exception is thrown otherwise.

Parameters:

hints - An optional map of hints, or null if none.

Returns:

The first precision model that matches the supplied hints.

Throws:

FactoryRegistryException - if no implementation was found or can be created for the PrecisionModel category and the given hints.

getPrecisionModels

public static Set getPrecisionModels()

Returns a set of all available implementations for the PrecisionModel category.

Returns:

Set of available precision model implementations.

getCoordinateSequenceFactory

public static CoordinateSequenceFactory getCoordinateSequenceFactory(Hints hints)
                                                              throws FactoryRegistryException

Returns the first implementation of CoordinateSequenceFactory matching the specified hints. If no implementation matches, a new one is created if possible or an exception is thrown otherwise.

Parameters:

hints - An optional map of hints, or null if none.

Returns:

The first coordinate sequence factory that matches the supplied hints.

Throws:

FactoryRegistryException - if no implementation was found or can be created for the CoordinateSequenceFactory interface and the given hints.

getCoordinateSequenceFactories

public static Set getCoordinateSequenceFactories()

Returns a set of all available implementations for the CoordinateSequenceFactory interface.

Returns:

Set of available coordinate sequence factory implementations.

scanForPlugins

public static void scanForPlugins()

Scans for factory plug-ins on the application class path. This method is needed because the application class path can theoretically change, or additional plug-ins may become available. Rather than re-scanning the classpath on every invocation of the API, the class path is scanned automatically only on the first invocation. Clients can call this method to prompt a re-scan. Thus this method need only be invoked by sophisticated applications which dynamically make new plug-ins available at runtime.