org.geotools.referencing.factory
Class ManyAuthoritiesFactory

Object
  AbstractFactory
      ReferencingFactory
          AbstractAuthorityFactory
              AuthorityFactoryAdapter
                  ManyAuthoritiesFactory

All Implemented Interfaces:

RegisterableService, Factory, OptionalFactory, AuthorityFactory, CRSAuthorityFactory, CSAuthorityFactory, DatumAuthorityFactory, CoordinateOperationAuthorityFactory

Direct Known Subclasses:

AllAuthoritiesFactory

public class ManyAuthoritiesFactory
extends AuthorityFactoryAdapter
implements CRSAuthorityFactory, CSAuthorityFactory, DatumAuthorityFactory, CoordinateOperationAuthorityFactory

An authority factory that delegates the object creation to an other factory determined from the authority name in the code. This factory requires that every codes given to a createFoo method are prefixed by the authority name, for example "EPSG:4326". This is different from using a factory from a known authority, in which case the authority part was optional (for example when using the EPSG authority factory, the "EPSG:" part in "EPSG:4326" is optional).

This class parses the authority name and delegates the work the corresponding factory. For example if any createFoo(...) method in this class is invoked with a code starting by "EPSG:", then this class delegates the object creation to one of the authority factories provided to the constructor.

This class is not registered in ReferencingFactoryFinder, because it is not a real authority factory. There is not a single authority name associated to this factory, but rather a set of names determined from all available authority factories.

Since:

2.4

Author:

Martin Desruisseaux (IRD)

Field Summary

Fields inherited from class ReferencingFactory

LOGGER

Fields inherited from class AbstractFactory

hints, MAXIMUM_PRIORITY, MINIMUM_PRIORITY, NORMAL_PRIORITY, priority

Constructor Summary

ManyAuthoritiesFactory(Collection<? extends AuthorityFactory> factories)
Creates a new factory using the specified set of user factories.

Method Summary

IdentifiedObject	createObject(String code) Returns an arbitrary object from a code.
Citation	getAuthority() Returns the organization or party responsible for definition and maintenance of the database.
Set<String>	getAuthorityCodes(Class<? extends IdentifiedObject> type) Returns the set of authority codes of the given type.
protected AuthorityFactory	getAuthorityFactory(String code) Returns a generic object authority factory for the specified "AUTHORITY:NUMBER" code.
Set<String>	getAuthorityNames() Returns the authority names of every factories given at construction time.
String	getBackingStoreDescription() Returns a description of the underlying backing store, or null if unknow.
protected CoordinateOperationAuthorityFactory	getCoordinateOperationAuthorityFactory(String code) Returns the operation authority factory for the specified "AUTHORITY:NUMBER" code.
protected CRSAuthorityFactory	getCRSAuthorityFactory(String code) Returns the CRS authority factory for the specified "AUTHORITY:NUMBER" code.
protected CSAuthorityFactory	getCSAuthorityFactory(String code) Returns the CS authority factory for the specified "AUTHORITY:NUMBER" code.
protected DatumAuthorityFactory	getDatumAuthorityFactory(String code) Returns the datum authority factory for the specified "AUTHORITY:NUMBER" code.
InternationalString	getDescriptionText(String code) Gets a description of the object corresponding to a code.
IdentifiedObjectFinder	getIdentifiedObjectFinder(Class<? extends IdentifiedObject> type) Returns a finder which can be used for looking up unidentified objects.
protected char	getSeparator(String code) Returns the character separator for the specified code.
Citation	getVendor() Returns the vendor responsible for creating this factory implementation.

Methods inherited from class AuthorityFactoryAdapter

createCartesianCS, createCompoundCRS, createCoordinateOperation, createCoordinateReferenceSystem, createCoordinateSystem, createCoordinateSystemAxis, createCylindricalCS, createDatum, createDerivedCRS, createEllipsoid, createEllipsoidalCS, createEngineeringCRS, createEngineeringDatum, createExtent, createFromCoordinateReferenceSystemCodes, createGeocentricCRS, createGeodeticDatum, createGeographicCRS, createImageCRS, createImageDatum, createOperationMethod, createParameterDescriptor, createPolarCS, createPrimeMeridian, createProjectedCRS, createSphericalCS, createTemporalCRS, createTemporalDatum, createTimeCS, createUnit, createVerticalCRS, createVerticalCS, createVerticalDatum, dispose, isAvailable, toBackingFactoryCode

Methods inherited from class AbstractAuthorityFactory

noSuchAuthorityCode, trimAuthority

Methods inherited from class ReferencingFactory

ensureNonNull

Methods inherited from class AbstractFactory

addImplementationHints, equals, getImplementationHints, getPriority, hashCode, onDeregistration, onRegistration, toString

Methods inherited from class Object

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

Methods inherited from interface CRSAuthorityFactory

createCompoundCRS, createCoordinateReferenceSystem, createDerivedCRS, createEngineeringCRS, createGeocentricCRS, createGeographicCRS, createImageCRS, createProjectedCRS, createTemporalCRS, createVerticalCRS

Methods inherited from interface CSAuthorityFactory

createCartesianCS, createCoordinateSystem, createCoordinateSystemAxis, createCylindricalCS, createEllipsoidalCS, createPolarCS, createSphericalCS, createTimeCS, createUnit, createVerticalCS

Methods inherited from interface DatumAuthorityFactory

createDatum, createEllipsoid, createEngineeringDatum, createGeodeticDatum, createImageDatum, createPrimeMeridian, createTemporalDatum, createVerticalDatum

Methods inherited from interface CoordinateOperationAuthorityFactory

createCoordinateOperation, createFromCoordinateReferenceSystemCodes

Methods inherited from interface Factory

getImplementationHints

Constructor Detail

ManyAuthoritiesFactory

public ManyAuthoritiesFactory(Collection<? extends AuthorityFactory> factories)

Creates a new factory using the specified set of user factories. Any call to a createFoo(code) method will scan the supplied factories in their iteration order. The first factory implementing the appropriate interface and having the expected authority name will be used.

If the factories collection contains more than one factory for the same authority and interface, then all additional factories will be fallbacks, to be tried in iteration order only if the first acceptable factory failed to create the requested object.

Parameters:

factories - A set of user-specified factories to try before to delegate to GeometryFactoryFinder.

Method Detail

getSeparator

protected char getSeparator(String code)

Returns the character separator for the specified code. The default implementation returns the default name separator ':', except if the code looks like a URL (e.g. "http://www.opengis.net/"), in which case this method returns '/'.

In the current implementation, "looks like a URL" means that the first non-aplhanumeric characters are "://". But this heuristic rule may change in future implementations.

getVendor

public Citation getVendor()

Returns the vendor responsible for creating this factory implementation. The default implementation returns Geotools.

Overrides:

getVendor in class AuthorityFactoryAdapter

Returns:

The vendor for this factory implementation.

getAuthority

public Citation getAuthority()

Returns the organization or party responsible for definition and maintenance of the database. The default implementation returns a citation with title "All".

Specified by:

getAuthority in interface AuthorityFactory

Overrides:

getAuthority in class AuthorityFactoryAdapter

Returns:

The organization reponsible for definition of the database.

getAuthorityNames

public Set<String> getAuthorityNames()

Returns the authority names of every factories given at construction time.

getBackingStoreDescription

public String getBackingStoreDescription()
                                  throws FactoryException

Returns a description of the underlying backing store, or null if unknow.

Overrides:

getBackingStoreDescription in class AuthorityFactoryAdapter

Returns:

The description of the underlying backing store, or null.

Throws:

FactoryException - if a failure occured while fetching the engine description.

getAuthorityFactory

protected AuthorityFactory getAuthorityFactory(String code)
                                        throws NoSuchAuthorityCodeException

Returns a generic object authority factory for the specified "AUTHORITY:NUMBER" code.

Overrides:

getAuthorityFactory in class AuthorityFactoryAdapter

Parameters:

code - The code to parse.

Returns:

The authority factory.

Throws:

NoSuchAuthorityCodeException - if no authority name has been found.

getDatumAuthorityFactory

protected DatumAuthorityFactory getDatumAuthorityFactory(String code)
                                                  throws NoSuchAuthorityCodeException

Returns the datum authority factory for the specified "AUTHORITY:NUMBER" code.

Overrides:

getDatumAuthorityFactory in class AuthorityFactoryAdapter

Parameters:

code - The code to parse.

Returns:

The authority factory.

Throws:

NoSuchAuthorityCodeException - if no authority name has been found.

getCSAuthorityFactory

protected CSAuthorityFactory getCSAuthorityFactory(String code)
                                            throws NoSuchAuthorityCodeException

Returns the CS authority factory for the specified "AUTHORITY:NUMBER" code.

Overrides:

getCSAuthorityFactory in class AuthorityFactoryAdapter

Parameters:

code - The code to parse.

Returns:

The authority factory.

Throws:

NoSuchAuthorityCodeException - if no authority name has been found.

getCRSAuthorityFactory

protected CRSAuthorityFactory getCRSAuthorityFactory(String code)
                                              throws NoSuchAuthorityCodeException

Returns the CRS authority factory for the specified "AUTHORITY:NUMBER" code.

Overrides:

getCRSAuthorityFactory in class AuthorityFactoryAdapter

Parameters:

code - The code to parse.

Returns:

The authority factory.

Throws:

NoSuchAuthorityCodeException - if no authority name has been found.

getCoordinateOperationAuthorityFactory

protected CoordinateOperationAuthorityFactory getCoordinateOperationAuthorityFactory(String code)
                                                                              throws NoSuchAuthorityCodeException

Returns the operation authority factory for the specified "AUTHORITY:NUMBER" code.

Overrides:

getCoordinateOperationAuthorityFactory in class AuthorityFactoryAdapter

Parameters:

code - The code to parse.

Returns:

The authority factory.

Throws:

NoSuchAuthorityCodeException - if no authority name has been found.

getAuthorityCodes

public Set<String> getAuthorityCodes(Class<? extends IdentifiedObject> type)
                              throws FactoryException

Returns the set of authority codes of the given type.

Specified by:

getAuthorityCodes in interface AuthorityFactory

Overrides:

getAuthorityCodes in class AuthorityFactoryAdapter

Parameters:

type - The spatial reference objects type (may be IdentifiedObject.class).

Returns:

The set of authority codes for spatial reference objects of the given type. If this factory doesn't contains any object of the given type, then this method returns an empty set.

Throws:

FactoryException - if access to the underlying database failed.

getDescriptionText

public InternationalString getDescriptionText(String code)
                                       throws FactoryException

Gets a description of the object corresponding to a code.

Specified by:

getDescriptionText in interface AuthorityFactory

Overrides:

getDescriptionText in class AuthorityFactoryAdapter

Parameters:

code - Value allocated by authority.

Returns:

A description of the object, or null if the object corresponding to the specified code has no description.

Throws:

NoSuchAuthorityCodeException - if the specified code was not found.

FactoryException - if the query failed for some other reason.

createObject

public IdentifiedObject createObject(String code)
                              throws FactoryException

Returns an arbitrary object from a code.

Specified by:

createObject in interface AuthorityFactory

Overrides:

createObject in class AuthorityFactoryAdapter

Parameters:

code - Value allocated by authority.

Returns:

The object for the given code.

Throws:

FactoryException - if the object creation failed.

See Also:

AuthorityFactoryAdapter.createCoordinateReferenceSystem(java.lang.String), AuthorityFactoryAdapter.createDatum(java.lang.String), AuthorityFactoryAdapter.createEllipsoid(java.lang.String), AuthorityFactoryAdapter.createUnit(java.lang.String)

getIdentifiedObjectFinder

public IdentifiedObjectFinder getIdentifiedObjectFinder(Class<? extends IdentifiedObject> type)
                                                 throws FactoryException

Returns a finder which can be used for looking up unidentified objects. The default implementation delegates the lookups to the underlying factories.

Overrides:

getIdentifiedObjectFinder in class AuthorityFactoryAdapter

Parameters:

type - The type of objects to look for. Should be a GeoAPI interface like GeographicCRS.class, but this method accepts also implementation class. If the type is unknown, use IdentifiedObject.class. A more accurate type may help to speed up the search, since it reduces the amount of tables to scan in some implementations like the factories backed by EPSG database.

Returns:

A finder to use for looking up unidentified objects.

Throws:

FactoryException - if the object creation failed.