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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.sis.referencing.cs;
import java.util.Map;
import javax.measure.Unit;
import javax.xml.bind.annotation.XmlType;
import javax.xml.bind.annotation.XmlRootElement;
import org.opengis.referencing.cs.SphericalCS;
import org.opengis.referencing.cs.AxisDirection;
import org.opengis.referencing.cs.CoordinateSystemAxis;
import org.apache.sis.internal.referencing.AxisDirections;
import org.apache.sis.measure.Units;
/**
* A 3-dimensional coordinate system with one distance measured from the origin and two angular coordinates.
* Not to be confused with an {@linkplain DefaultEllipsoidalCS ellipsoidal coordinate system}
* based on an ellipsoid "degenerated" into a sphere.
*
* <table class="sis">
* <caption>Permitted associations</caption>
* <tr>
* <th>Used with CRS</th>
* <th>Permitted axis names</th>
* </tr><tr>
* <td>{@linkplain org.apache.sis.referencing.crs.DefaultGeocentricCRS Geocentric}</td>
* <td>“Spherical Latitude”, “ Spherical Longitude”, “Geocentric Radius”</td>
* </tr><tr>
* <td>{@linkplain org.apache.sis.referencing.crs.DefaultEngineeringCRS Engineering}</td>
* <td>unspecified</td>
* </tr></table>
*
* <h2>Immutability and thread safety</h2>
* This class is immutable and thus thread-safe if the property <em>values</em> (not necessarily the map itself)
* and the {@link CoordinateSystemAxis} instances given to the constructor are also immutable. Unless otherwise
* noted in the javadoc, this condition holds if all components were created using only SIS factories and static
* constants.
*
* @author Martin Desruisseaux (IRD, Geomatys)
* @version 0.4
*
* @see org.apache.sis.referencing.factory.GeodeticAuthorityFactory#createSphericalCS(String)
*
* @since 0.4
* @module
*/
@XmlType(name = "SphericalCSType")
@XmlRootElement(name = "SphericalCS")
public class DefaultSphericalCS extends AbstractCS implements SphericalCS {
/**
* Serial number for inter-operability with different versions.
*/
private static final long serialVersionUID = 196295996465774477L;
/**
* Creates a new coordinate system from an arbitrary number of axes. This constructor is for
* implementations of the {@link #createForAxes(Map, CoordinateSystemAxis[])} method only,
* because it does not verify the number of axes.
*/
private DefaultSphericalCS(final Map<String,?> properties, final CoordinateSystemAxis[] axes) {
super(properties, axes);
}
/**
* Constructs a three-dimensional coordinate system from a set of properties.
* The properties map is given unchanged to the
* {@linkplain AbstractCS#AbstractCS(Map,CoordinateSystemAxis[]) super-class constructor}.
* The following table is a reminder of main (not all) properties:
*
* <table class="sis">
* <caption>Recognized properties (non exhaustive list)</caption>
* <tr>
* <th>Property name</th>
* <th>Value type</th>
* <th>Returned by</th>
* </tr>
* <tr>
* <td>{@value org.opengis.referencing.IdentifiedObject#NAME_KEY}</td>
* <td>{@link org.opengis.referencing.ReferenceIdentifier} or {@link String}</td>
* <td>{@link #getName()}</td>
* </tr>
* <tr>
* <td>{@value org.opengis.referencing.IdentifiedObject#ALIAS_KEY}</td>
* <td>{@link org.opengis.util.GenericName} or {@link CharSequence} (optionally as array)</td>
* <td>{@link #getAlias()}</td>
* </tr>
* <tr>
* <td>{@value org.opengis.referencing.IdentifiedObject#IDENTIFIERS_KEY}</td>
* <td>{@link org.opengis.referencing.ReferenceIdentifier} (optionally as array)</td>
* <td>{@link #getIdentifiers()}</td>
* </tr>
* <tr>
* <td>{@value org.opengis.referencing.IdentifiedObject#REMARKS_KEY}</td>
* <td>{@link org.opengis.util.InternationalString} or {@link String}</td>
* <td>{@link #getRemarks()}</td>
* </tr>
* </table>
*
* @param properties the properties to be given to the identified object.
* @param axis0 the first axis (e.g. “Spherical latitude”).
* @param axis1 the second axis (e.g. “Spherical longitude”).
* @param axis2 the third axis (e.g. “Geocentric radius”).
*
* @see org.apache.sis.referencing.factory.GeodeticObjectFactory#createSphericalCS(Map, CoordinateSystemAxis, CoordinateSystemAxis, CoordinateSystemAxis)
*/
public DefaultSphericalCS(final Map<String,?> properties,
final CoordinateSystemAxis axis0,
final CoordinateSystemAxis axis1,
final CoordinateSystemAxis axis2)
{
super(properties, axis0, axis1, axis2);
}
/**
* Creates a new coordinate system with the same values than the specified one.
* This copy constructor provides a way to convert an arbitrary implementation into a SIS one
* or a user-defined one (as a subclass), usually in order to leverage some implementation-specific API.
*
* <p>This constructor performs a shallow copy, i.e. the properties are not cloned.</p>
*
* @param cs the coordinate system to copy.
*
* @see #castOrCopy(SphericalCS)
*/
protected DefaultSphericalCS(final SphericalCS cs) {
super(cs);
}
/**
* Returns a SIS coordinate system implementation with the same values than the given arbitrary implementation.
* If the given object is {@code null}, then this method returns {@code null}.
* Otherwise if the given object is already a SIS implementation, then the given object is returned unchanged.
* Otherwise a new SIS implementation is created and initialized to the attribute values of the given object.
*
* @param object the object to get as a SIS implementation, or {@code null} if none.
* @return a SIS implementation containing the values of the given object (may be the
* given object itself), or {@code null} if the argument was null.
*/
public static DefaultSphericalCS castOrCopy(final SphericalCS object) {
return (object == null) || (object instanceof DefaultSphericalCS)
? (DefaultSphericalCS) object : new DefaultSphericalCS(object);
}
/**
* Returns {@code VALID} if the given argument values are allowed for this coordinate system,
* or an {@code INVALID_*} error code otherwise. This method is invoked at construction time.
*
* <p>The current implementation rejects all directions that are known to be non-spatial.</p>
*/
@Override
final int validateAxis(final AxisDirection direction, final Unit<?> unit) {
if (!AxisDirections.isSpatialOrUserDefined(direction, false)) {
return INVALID_DIRECTION;
}
if (!Units.isAngular(unit) && !Units.isLinear(unit)) {
return INVALID_UNIT;
}
return VALID;
}
/**
* Returns the GeoAPI interface implemented by this class.
* The SIS implementation returns {@code SphericalCS.class}.
*
* <div class="note"><b>Note for implementers:</b>
* Subclasses usually do not need to override this method since GeoAPI does not define {@code SphericalCS}
* sub-interface. Overriding possibility is left mostly for implementers who wish to extend GeoAPI with their
* own set of interfaces.</div>
*
* @return {@code SphericalCS.class} or a user-defined sub-interface.
*/
@Override
public Class<? extends SphericalCS> getInterface() {
return SphericalCS.class;
}
/**
* {@inheritDoc}
*
* @return {@inheritDoc}
*/
@Override
public DefaultSphericalCS forConvention(final AxesConvention convention) {
return (DefaultSphericalCS) super.forConvention(convention);
}
/**
* Returns a coordinate system with different axes.
*/
@Override
final AbstractCS createForAxes(final Map<String,?> properties, final CoordinateSystemAxis[] axes) {
switch (axes.length) {
case 2: return new DefaultPolarCS(properties, axes);
case 3: return new DefaultSphericalCS(properties, axes);
default: throw unexpectedDimension(properties, axes, 2);
}
}
//////////////////////////////////////////////////////////////////////////////////////////////////
//////// ////////
//////// XML support with JAXB ////////
//////// ////////
//////// The following methods are invoked by JAXB using reflection (even if ////////
//////// they are private) or are helpers for other methods invoked by JAXB. ////////
//////// Those methods can be safely removed if Geographic Markup Language ////////
//////// (GML) support is not needed. ////////
//////// ////////
//////////////////////////////////////////////////////////////////////////////////////////////////
/**
* Constructs a new coordinate system in which every attributes are set to a null or empty value.
* <strong>This is not a valid object.</strong> This constructor is strictly reserved to JAXB,
* which will assign values to the fields using reflexion.
*/
private DefaultSphericalCS() {
}
}