org.geotoolkit.referencing.operation
Class CachingCoordinateOperationFactory

Object
  Factory
      ReferencingFactory
          AbstractCoordinateOperationFactory
              CachingCoordinateOperationFactory

All Implemented Interfaces:

ObjectFactory, CoordinateOperationFactory, Factory

@Buffered
@ThreadSafe
@Decorator(value=org.opengis.referencing.operation.CoordinateOperationFactory.class)
public class CachingCoordinateOperationFactory
extends AbstractCoordinateOperationFactory

Caches the coordinate operations created by an other factory. Those coordinate operations may be expensive to create. During rendering and during data I/O, some implementations make use a lot of coordinate transformations, hence caching them might help.

In most cases, users should not need to create an instance of this class explicitly. An instance of CachingCoordinateOperationFactory should be automatically registered and returned by FactoryFinder in default Geotk configuration.

Since:

2.3

Version:

3.00

Author:

Simone Giannecchini (Geosolutions), Martin Desruisseaux (IRD)

Module:

referencing/geotk-referencing (download)

View source code for this class

Nested Class Summary

Nested classes/interfaces inherited from class Factory

Factory.Availability, Factory.Organizer

Field Summary

Fields inherited from class AbstractCoordinateOperationFactory

AXIS_CHANGES, DATUM_SHIFT, ELLIPSOID_SHIFT, GEOCENTRIC_CONVERSION, IDENTITY, INVERSE_OPERATION

Fields inherited from class ReferencingFactory

LOGGER

Fields inherited from class Factory

EMPTY_HINTS, hints

Constructor Summary

CachingCoordinateOperationFactory()
Creates a buffered factory wrapping the default one.

CachingCoordinateOperationFactory(Hints hints)
Creates a buffered factory wrapping an other factory selected according the specified hints.

Method Summary

CoordinateOperation	createOperation(CoordinateReferenceSystem sourceCRS, CoordinateReferenceSystem targetCRS) Returns an operation for conversion or transformation between two coordinate reference systems.
CoordinateOperation	createOperation(CoordinateReferenceSystem sourceCRS, CoordinateReferenceSystem targetCRS, OperationMethod method) Returns an operation for conversion or transformation between two coordinate reference systems using the specified method.

Methods inherited from class AbstractCoordinateOperationFactory

concatenate, concatenate, createConcatenatedOperation, createDefiningConversion, createFromAffineTransform, createFromMathTransform, createFromMathTransform, createFromParameters, getErrorMessage, getImplementationHints, getMathTransformFactory, inverse, swapAndScaleAxis

Methods inherited from class ReferencingFactory

ensureNonNull, getVendor

Methods inherited from class Factory

availability, dispose, equals, hasCompatibleHints, hashCode, setOrdering, toString

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface Factory

getVendor

Constructor Detail

CachingCoordinateOperationFactory

public CachingCoordinateOperationFactory()

Creates a buffered factory wrapping the default one.

CachingCoordinateOperationFactory

public CachingCoordinateOperationFactory(Hints hints)

Creates a buffered factory wrapping an other factory selected according the specified hints.

Parameters:

hints - The hints to use for choosing a backing factory.

Method Detail

createOperation

public CoordinateOperation createOperation(CoordinateReferenceSystem sourceCRS,
                                           CoordinateReferenceSystem targetCRS)
                                    throws OperationNotFoundException,
                                           FactoryException

Returns an operation for conversion or transformation between two coordinate reference systems. If an operation was already created and still in the cache, the cached operation is returned. Otherwise the operation creation is delegated to the factory specified at construction time and the result is cached.

Parameters:

sourceCRS - Input coordinate reference system.

targetCRS - Output coordinate reference system.

Returns:

A coordinate operation from sourceCRS to targetCRS.

Throws:

OperationNotFoundException - if no operation path was found from sourceCRS to targetCRS.

FactoryException - if the operation creation failed for some other reason.

createOperation

public CoordinateOperation createOperation(CoordinateReferenceSystem sourceCRS,
                                           CoordinateReferenceSystem targetCRS,
                                           OperationMethod method)
                                    throws OperationNotFoundException,
                                           FactoryException

Returns an operation for conversion or transformation between two coordinate reference systems using the specified method. If an operation was already created and still in the cache, the cached operation is returned. Otherwise the operation creation is delegated to the factory specified at construction time and the result is cached.

Parameters:

sourceCRS - Input coordinate reference system.

targetCRS - Output coordinate reference system.

method - The algorithmic method for conversion or transformation.

Returns:

A coordinate operation from sourceCRS to targetCRS.

Throws:

OperationNotFoundException - if no operation path was found from sourceCRS to targetCRS.

FactoryException - if the operation creation failed for some other reason.