org.deegree_impl.model.cs
Class HorizontalDatum

java.lang.Object
  org.deegree_impl.model.cs.Info
      org.deegree_impl.model.cs.Datum
          org.deegree_impl.model.cs.HorizontalDatum

All Implemented Interfaces:

java.io.Serializable

public class HorizontalDatum

extends Datum

Procedure used to measure positions on the surface of the Earth.

Version:

1.00

Author:

OpenGIS (www.opengis.org), Martin Desruisseaux

See Also:

CS_HorizontalDatum, Serialized Form

Nested Class Summary

private class

HorizontalDatum.Export Wrap a HorizontalDatum object for use with OpenGIS.

Nested classes inherited from class org.deegree_impl.model.cs.Info

Info.AngularUnit, Info.LinearUnit

Field Summary

private Ellipsoid	ellipsoid The ellipsoid for this datum.
private WGS84ConversionInfo	parameters Preferred parameters for a Bursa Wolf transformation.
private static long	serialVersionUID Serial number for interoperability with different versions.
static HorizontalDatum	WGS84 The default WGS 1984 datum.

Fields inherited from class org.deegree_impl.model.cs.Datum

Fields inherited from class org.deegree_impl.model.cs.Info

pool

Constructor Summary

(package private)	HorizontalDatum(java.util.Map properties, DatumType type, Ellipsoid ellipsoid, WGS84ConversionInfo parameters) Creates horizontal datum from ellipsoid and Bursa-Wolf parameters.
	HorizontalDatum(java.lang.String name, DatumType.Horizontal type, Ellipsoid ellipsoid, WGS84ConversionInfo parameters) Creates horizontal datum from ellipsoid and Bursa-Wolf parameters.
	HorizontalDatum(java.lang.String name, Ellipsoid ellipsoid) Creates horizontal datum from an ellipsoid.

Method Summary

(package private) java.lang.String	addString(java.lang.StringBuffer buffer) Fill the part inside "[...]".
boolean	equals(java.lang.Object object) Compares the specified object with this datum for equality.
DatumType	getDatumType() Gets the type of the datum as an enumerated code.
Ellipsoid	getEllipsoid() Returns the ellipsoid.
WGS84ConversionInfo	getWGS84Parameters() Gets preferred parameters for a Bursa Wolf transformation into WGS84.
(package private) java.lang.Object	toOpenGIS(java.lang.Object adapters) Returns an OpenGIS interface for this datum.

Methods inherited from class org.deegree_impl.model.cs.Datum

hashCode

Methods inherited from class org.deegree_impl.model.cs.Info

addUnit, cachedOpenGIS, ensureAngularUnit, ensureLinearUnit, ensureNonNull, ensureNonNull, ensureTimeUnit, getAbbreviation, getAlias, getAuthority, getAuthorityCode, getName, getRemarks, readResolve, toString

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

Serial number for interoperability with different versions.

See Also:

Constant Field Values

WGS84

public static final HorizontalDatum WGS84

The default WGS 1984 datum.

ellipsoid

private final Ellipsoid ellipsoid

The ellipsoid for this datum.

parameters

private final WGS84ConversionInfo parameters

Preferred parameters for a Bursa Wolf transformation.

Constructor Detail

HorizontalDatum

public HorizontalDatum(java.lang.String name,
                       Ellipsoid ellipsoid)

Creates horizontal datum from an ellipsoid. The datum type will be DatumType.Horizontal.OTHER.

Parameters:

name - Name to give new object.

ellipsoid - Ellipsoid to use in new horizontal datum.

HorizontalDatum

public HorizontalDatum(java.lang.String name,
                       DatumType.Horizontal type,
                       Ellipsoid ellipsoid,
                       WGS84ConversionInfo parameters)

Creates horizontal datum from ellipsoid and Bursa-Wolf parameters.

Parameters:

name - Name to give new object.

type - Type of horizontal datum to create.

ellipsoid - Ellipsoid to use in new horizontal datum.

parameters - Suggested approximate conversion from new datum to WGS84, or null if there is none.

HorizontalDatum

HorizontalDatum(java.util.Map properties,
                DatumType type,
                Ellipsoid ellipsoid,
                WGS84ConversionInfo parameters)

Creates horizontal datum from ellipsoid and Bursa-Wolf parameters.

Parameters:

properties - The set of properties (see Info).

type - Type of horizontal datum to create.

ellipsoid - Ellipsoid to use in new horizontal datum.

parameters - Suggested approximate conversion from new datum to WGS84, or null if there is none.

Method Detail

getDatumType

public DatumType getDatumType()

Gets the type of the datum as an enumerated code. Note: return type will be changed to DatumType.Horizontal when we will be able to use generic types (with JDK 1.5).

Overrides:

getDatumType in class Datum

See Also:

CS_Datum.getDatumType()

getEllipsoid

public Ellipsoid getEllipsoid()

Returns the ellipsoid.

See Also:

CS_HorizontalDatum.getEllipsoid()

getWGS84Parameters

public WGS84ConversionInfo getWGS84Parameters()

Gets preferred parameters for a Bursa Wolf transformation into WGS84. The 7 returned values correspond to (dx,dy,dz) in meters, (ex,ey,ez) in arc-seconds, and scaling in parts-per-million. This method will always returns null for horizontal datums with type DatumType.Horizontal.OTHER. This method may also returns null if no suitable transformation is available.

See Also:

CS_HorizontalDatum.getWGS84Parameters()

addString

java.lang.String addString(java.lang.StringBuffer buffer)

Fill the part inside "[...]". Used for formatting Well Know Text (WKT).

Overrides:

addString in class Datum

equals

public boolean equals(java.lang.Object object)

Compares the specified object with this datum for equality.

Overrides:

equals in class Datum

toOpenGIS

final java.lang.Object toOpenGIS(java.lang.Object adapters)

Returns an OpenGIS interface for this datum. The returned object is suitable for RMI use. Note: The returned type is a generic Object in order to avoid too early class loading of OpenGIS interface.

Overrides:

toOpenGIS in class Datum