Package org.geotools.referencing.epsg.wkt

Class EPSGCRSAuthorityFactory

Object

AbstractFactory

EPSGCRSAuthorityFactory

All Implemented Interfaces:

AuthorityFactory, CRSAuthorityFactory, Factory, Factory, RegistrableFactory

public class EPSGCRSAuthorityFactory
extends AbstractFactory
implements CRSAuthorityFactory

Default implementation for a coordinate reference system authority factory backed by the EPSG property file. This gives most of the benifits of using the EPSG database backed authority factory, in a nice, portable property file.

Author:

Jody Garnett, Rueben Schulz

Field Summary

Fields

Modifier and Type	Field	Description
static final String	AUTHORITY
static final String	AUTHORITY_PREFIX
protected CRSFactory	crsFactory
protected static EPSGCRSAuthorityFactory	DEFAULT	The default coordinate system authority factory.
protected Properties	epsg	The properties object for our properties file.

Fields inherited from class AbstractFactory

hints, MAXIMUM_PRIORITY, MINIMUM_PRIORITY, NORMAL_PRIORITY, priority

Constructor Summary

Constructors

Modifier	Constructor	Description
	EPSGCRSAuthorityFactory()	Loads from epsg.properties if the file exists, defaults to internal defintions exported from postgis and cubeworks.
protected	EPSGCRSAuthorityFactory(CRSFactory factory)	Loads from epsg.properties if the file exists, defaults to internal defintions exported from postgis and cubeworks.
protected	EPSGCRSAuthorityFactory(CRSFactory factory, URL definition)

Method Summary

Modifier and Type	Method	Description
CompoundCRS	createCompoundCRS(String str)	Creates a 3D coordinate reference system from a code.
CoordinateReferenceSystem	createCoordinateReferenceSystem(String code)	Returns an arbitrary coordinate reference system from a code.
DerivedCRS	createDerivedCRS(String str)	Creates a derived coordinate reference system from a code.
EngineeringCRS	createEngineeringCRS(String str)	Create a engineering coordinate reference system from a code.
GeocentricCRS	createGeocentricCRS(String str)	Returns a geocentric coordinate reference system from a code.
GeographicCRS	createGeographicCRS(String code)	Returns a geographic coordinate reference system from a code.
ImageCRS	createImageCRS(String str)	Create a image coordinate reference system from a code.
IdentifiedObject	createObject(String code)	Returns an arbitrary object from a code.
ProjectedCRS	createProjectedCRS(String code)	Returns a projected coordinate reference system from a code.
TemporalCRS	createTemporalCRS(String str)	Create a temporal coordinate reference system from a code.
VerticalCRS	createVerticalCRS(String str)	Create a vertical coordinate reference system from a code.
Citation	getAuthority()	Returns the organization or party responsible for definition and maintenance of the database.
Set<String>	getAuthorityCodes(Class clazz)	Returns the set of authority codes of the given type.
static CRSAuthorityFactory	getDefault()	Returns a default coordinate system factory backed by the EPSG property file.
InternationalString	getDescriptionText(String code)	Gets a description of the object corresponding to a code.
ObjectFactory	getObjectFactory()
Citation	getVendor()	Returns the vendor responsible for creating this factory implementation.
protected void	loadDefault()	Loads from epsg.properties if the file exists, defaults to internal defintions exported from postgis and cubeworks.

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

Field Details

AUTHORITY

public static final String AUTHORITY

See Also:

• Constant Field Values

AUTHORITY_PREFIX

public static final String AUTHORITY_PREFIX

See Also:

• Constant Field Values

DEFAULT

protected static EPSGCRSAuthorityFactory DEFAULT

The default coordinate system authority factory. Will be constructed only when first requested.

epsg

protected Properties epsg

The properties object for our properties file. Keys are the EPSG code for a coordinate reference system and the associated value is a WKT string for the CRS.

crsFactory

protected CRSFactory crsFactory

Constructor Details

EPSGCRSAuthorityFactory

public EPSGCRSAuthorityFactory()

Loads from epsg.properties if the file exists, defaults to internal defintions exported from postgis and cubeworks.

EPSGCRSAuthorityFactory

protected EPSGCRSAuthorityFactory(CRSFactory factory)

Loads from epsg.properties if the file exists, defaults to internal defintions exported from postgis and cubeworks.

EPSGCRSAuthorityFactory

protected EPSGCRSAuthorityFactory(CRSFactory factory,
 URL definition)
                           throws FactoryException

Throws:

FactoryException

Method Details

loadDefault

protected void loadDefault()
                    throws IOException

Loads from epsg.properties if the file exists, defaults to internal defintions exported from postgis and cubeworks.

Throws:

IOException

getDefault

public static CRSAuthorityFactory getDefault()

Returns a default coordinate system factory backed by the EPSG property file.

Returns:

The default factory.

Throws:

SQLException - if the connection to the database can't be etablished.

createCoordinateReferenceSystem

public CoordinateReferenceSystem createCoordinateReferenceSystem(String code)
                                                          throws FactoryException

Description copied from interface: CRSAuthorityFactory

Returns an arbitrary coordinate reference system from a code. If the coordinate reference system type is know at compile time, it is recommended to invoke the most precise method instead of this one (for example createGeographicCRS(code) instead of createCoordinateReferenceSystem(code) if the caller know he is asking for a geographic coordinate reference system).

Specified by:

createCoordinateReferenceSystem in interface CRSAuthorityFactory

Parameters:

code - Value allocated by authority.

Returns:

The coordinate reference system for the given code.

Throws:

NoSuchAuthorityCodeException - if the specified code was not found.

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

See Also:

• CRSAuthorityFactory.createGeographicCRS(java.lang.String)
• CRSAuthorityFactory.createProjectedCRS(java.lang.String)
• CRSAuthorityFactory.createVerticalCRS(java.lang.String)
• CRSAuthorityFactory.createTemporalCRS(java.lang.String)
• CRSAuthorityFactory.createCompoundCRS(java.lang.String)

createObject

public IdentifiedObject createObject(String code)
                              throws FactoryException

Description copied from interface: AuthorityFactory

Returns an arbitrary object from a code. The returned object will typically be an instance of Datum, CoordinateSystem, ReferenceSystem or CoordinateOperation. If the type of the object is know at compile time, it is recommended to invoke the most precise method instead of this one (for example createCoordinateReferenceSystem(code) instead of createObject(code) if the caller know he is asking for a coordinate reference system).

Specified by:

createObject in interface AuthorityFactory

Parameters:

code - Value allocated by authority.

Returns:

The object for the given code.

Throws:

NoSuchAuthorityCodeException - if the specified code was not found.

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

See Also:

• DatumAuthorityFactory.createDatum(java.lang.String)
• CRSAuthorityFactory.createCoordinateReferenceSystem(java.lang.String)

createProjectedCRS

public ProjectedCRS createProjectedCRS(String code)
                                throws FactoryException

Description copied from interface: CRSAuthorityFactory

Returns a projected coordinate reference system from a code.

Specified by:

createProjectedCRS in interface CRSAuthorityFactory

Parameters:

code - Value allocated by authority.

Returns:

The coordinate reference system for the given code.

Throws:

NoSuchAuthorityCodeException - if the specified code was not found.

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

See Also:

• DatumAuthorityFactory.createGeodeticDatum(java.lang.String)

createGeographicCRS

public GeographicCRS createGeographicCRS(String code)
                                  throws FactoryException

Description copied from interface: CRSAuthorityFactory

Returns a geographic coordinate reference system from a code.

Specified by:

createGeographicCRS in interface CRSAuthorityFactory

Parameters:

code - Value allocated by authority.

Returns:

The coordinate reference system for the given code.

Throws:

NoSuchAuthorityCodeException - if the specified code was not found.

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

See Also:

• DatumAuthorityFactory.createGeodeticDatum(java.lang.String)

getAuthority

public Citation getAuthority()

Description copied from interface: AuthorityFactory

Returns the organization or party responsible for definition and maintenance of the database.

Specified by:

getAuthority in interface AuthorityFactory

Returns:

The organization reponsible for definition of the database.

getAuthorityCodes

public Set<String> getAuthorityCodes(Class clazz)
                              throws FactoryException

Returns the set of authority codes of the given type. The type argument specify the base class. For example if this factory is an instance of CRSAuthorityFactory, then:

• CoordinateReferenceSystem.class asks for all authority codes accepted by createGeographicCRS, createProjectedCRS, createVerticalCRS, createTemporalCRS and their friends.
• ProjectedCRS.class asks only for authority codes accepted by createProjectedCRS.

The following implementaiton filters the set of codes based on the "PROJCS" and "GEOGCS" at the start of the WKT strings. It is assumed that we only have GeographicCRS and ProjectedCRS's here.

Specified by:

getAuthorityCodes in interface AuthorityFactory

Parameters:

clazz - The spatial reference objects type (may be Object.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.

getObjectFactory

public ObjectFactory getObjectFactory()

getVendor

public Citation getVendor()

Description copied from interface: Factory

Returns the vendor responsible for creating this factory implementation. Many implementations may be available for the same factory interface. Implementations are usually managed by a service registry.

Specified by:

getVendor in interface Factory

Returns:

The vendor for this factory implementation.

getDescriptionText

public InternationalString getDescriptionText(String code)
                                       throws FactoryException

Description copied from interface: AuthorityFactory

Gets a description of the object corresponding to a code.

Specified by:

getDescriptionText in interface AuthorityFactory

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.

createCompoundCRS

public CompoundCRS createCompoundCRS(String str)
                              throws FactoryException

Description copied from interface: CRSAuthorityFactory

Creates a 3D coordinate reference system from a code.

Specified by:

createCompoundCRS in interface CRSAuthorityFactory

Parameters:

str - Value allocated by authority.

Returns:

The coordinate reference system for the given code.

Throws:

NoSuchAuthorityCodeException - if the specified code was not found.

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

createDerivedCRS

public DerivedCRS createDerivedCRS(String str)
                            throws FactoryException

Description copied from interface: CRSAuthorityFactory

Creates a derived coordinate reference system from a code.

Specified by:

createDerivedCRS in interface CRSAuthorityFactory

Parameters:

str - Value allocated by authority.

Returns:

The coordinate reference system for the given code.

Throws:

NoSuchAuthorityCodeException - if the specified code was not found.

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

createEngineeringCRS

public EngineeringCRS createEngineeringCRS(String str)
                                    throws FactoryException

Description copied from interface: CRSAuthorityFactory

Create a engineering coordinate reference system from a code.

Specified by:

createEngineeringCRS in interface CRSAuthorityFactory

Parameters:

str - Value allocated by authority.

Returns:

The coordinate reference system for the given code.

Throws:

NoSuchAuthorityCodeException - if the specified code was not found.

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

createGeocentricCRS

public GeocentricCRS createGeocentricCRS(String str)
                                  throws FactoryException

Description copied from interface: CRSAuthorityFactory

Returns a geocentric coordinate reference system from a code.

Specified by:

createGeocentricCRS in interface CRSAuthorityFactory

Parameters:

str - Value allocated by authority.

Returns:

The coordinate reference system for the given code.

Throws:

NoSuchAuthorityCodeException - if the specified code was not found.

FactoryException - if the object creation failed.

See Also:

• DatumAuthorityFactory.createGeodeticDatum(java.lang.String)

createImageCRS

public ImageCRS createImageCRS(String str)
                        throws FactoryException

Description copied from interface: CRSAuthorityFactory

Create a image coordinate reference system from a code.

Specified by:

createImageCRS in interface CRSAuthorityFactory

Parameters:

str - Value allocated by authority.

Returns:

The coordinate reference system for the given code.

Throws:

NoSuchAuthorityCodeException - if the specified code was not found.

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

createTemporalCRS

public TemporalCRS createTemporalCRS(String str)
                              throws FactoryException

Description copied from interface: CRSAuthorityFactory

Create a temporal coordinate reference system from a code.

Specified by:

createTemporalCRS in interface CRSAuthorityFactory

Parameters:

str - Value allocated by authority.

Returns:

The coordinate reference system for the given code.

Throws:

NoSuchAuthorityCodeException - if the specified code was not found.

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

See Also:

• DatumAuthorityFactory.createTemporalDatum(java.lang.String)

createVerticalCRS

public VerticalCRS createVerticalCRS(String str)
                              throws FactoryException

Description copied from interface: CRSAuthorityFactory

Create a vertical coordinate reference system from a code.

Specified by:

createVerticalCRS in interface CRSAuthorityFactory

Parameters:

str - Value allocated by authority.

Returns:

The coordinate reference system for the given code.

Throws:

NoSuchAuthorityCodeException - if the specified code was not found.

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

See Also:

• DatumAuthorityFactory.createVerticalDatum(java.lang.String)