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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.VerticalCS;
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 1-dimensional coordinate system for heights or depths of points.
* OGC/ISO do not provide an exact definition, since the complexity of vertical CS fall outside the scope of ISO 19111.
* Some examples of vertical coordinate systems are:
*
* <ul>
* <li>Height in metres from a surface dependent on the Earth's gravity field</li>
* <li>Height or depth represented by an atmospheric or water pressure measurement.</li>
* <li>Depth represented by the time needed for an echo signal to travel.</li>
* <li>"Sigma-level depth" (used in oceanography) as a dimensionless quantity.</li>
* </ul>
*
* The above examples show the variety of units of measurement which can be associated to vertical positions.
*
* <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.DefaultVerticalCRS Vertical}</td>
* <td>“Gravity-related height” or “Depth”</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 0.8
*
* @see org.apache.sis.referencing.crs.DefaultVerticalCRS
* @see org.apache.sis.referencing.datum.DefaultVerticalDatum
* @see org.apache.sis.referencing.factory.GeodeticAuthorityFactory#createVerticalCS(String)
*
* @since 0.4
* @module
*/
@XmlType(name = "VerticalCSType")
@XmlRootElement(name = "VerticalCS")
public class DefaultVerticalCS extends AbstractCS implements VerticalCS {
/**
* Serial number for inter-operability with different versions.
*/
private static final long serialVersionUID = 1201155778896630499L;
/**
* 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.
*/
DefaultVerticalCS(final Map<String,?> properties, final CoordinateSystemAxis[] axes) {
super(properties, axes);
}
/**
* Constructs a 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.metadata.Identifier} 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.metadata.Identifier} (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 axis the single axis (e.g. “height” or “depth”).
*
* @see org.apache.sis.referencing.factory.GeodeticObjectFactory#createVerticalCS(Map, CoordinateSystemAxis)
*/
public DefaultVerticalCS(final Map<String,?> properties, final CoordinateSystemAxis axis) {
super(properties, axis);
}
/**
* 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(VerticalCS)
*/
protected DefaultVerticalCS(final VerticalCS 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 DefaultVerticalCS castOrCopy(final VerticalCS object) {
return (object == null) || (object instanceof DefaultVerticalCS)
? (DefaultVerticalCS) object : new DefaultVerticalCS(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.
* The current implementation accepts only temporal directions (i.e. {@link AxisDirection#UP}
* and {@link AxisDirection#DOWN}).
*/
@Override
final int validateAxis(final AxisDirection direction, Unit<?> unit) {
if (!AxisDirection.UP.equals(AxisDirections.absolute(direction))) {
return INVALID_DIRECTION;
}
unit = unit.getSystemUnit();
if (unit.equals(Units.METRE) || // Most usual case.
unit.equals(Units.PASCAL) || // Height or depth estimated by the atmospheric or ocean pressure.
unit.equals(Units.SECOND) || // Depth estimated by the time needed for an echo to travel.
unit.equals(Units.UNITY)) // Sigma-level (percentage from sea surface to ocean floor).
{
return VALID;
}
return INVALID_UNIT;
}
/**
* Returns the GeoAPI interface implemented by this class.
* The SIS implementation returns {@code VerticalCS.class}.
*
* <div class="note"><b>Note for implementers:</b>
* Subclasses usually do not need to override this method since GeoAPI does not define {@code VerticalCS}
* sub-interface. Overriding possibility is left mostly for implementers who wish to extend GeoAPI with
* their own set of interfaces.</div>
*
* @return {@code VerticalCS.class} or a user-defined sub-interface.
*/
@Override
public Class<? extends VerticalCS> getInterface() {
return VerticalCS.class;
}
/**
* {@inheritDoc}
*
* @return {@inheritDoc}
*/
@Override
public DefaultVerticalCS forConvention(final AxesConvention convention) {
return (DefaultVerticalCS) 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 1: return new DefaultVerticalCS(properties, axes);
default: throw unexpectedDimension(properties, axes, 1);
}
}
//////////////////////////////////////////////////////////////////////////////////////////////////
//////// ////////
//////// 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 DefaultVerticalCS() {
}
}