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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.datum;
import java.util.Map;
import javax.xml.bind.annotation.XmlType;
import javax.xml.bind.annotation.XmlRootElement;
import org.opengis.util.GenericName;
import org.opengis.util.InternationalString;
import org.opengis.referencing.ReferenceIdentifier;
import org.opengis.referencing.datum.EngineeringDatum;
import org.apache.sis.internal.referencing.WKTKeywords;
import org.apache.sis.io.wkt.Formatter;
/**
* Defines the origin of an engineering coordinate reference system.
* An engineering datum is used in a region around that origin.
* This origin can be fixed with respect to the earth (such as a defined point at a construction site),
* or be a defined point on a moving vehicle (such as on a ship or satellite).
*
* <div class="section">Immutability and thread safety</div>
* This class is immutable and thus thread-safe if the property <em>values</em> (not necessarily the map itself)
* 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.crs.DefaultEngineeringCRS
* @see org.apache.sis.referencing.factory.GeodeticAuthorityFactory#createEngineeringDatum(String)
*
* @since 0.4
* @module
*/
@XmlType(name = "EngineeringDatumType")
@XmlRootElement(name = "EngineeringDatum")
public class DefaultEngineeringDatum extends AbstractDatum implements EngineeringDatum {
/**
* Serial number for inter-operability with different versions.
*/
private static final long serialVersionUID = 1498304918725248637L;
/**
* Creates an engineering datum from the given properties. The properties map is given
* unchanged to the {@linkplain AbstractDatum#AbstractDatum(Map) 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 ReferenceIdentifier} or {@link String}</td>
* <td>{@link #getName()}</td>
* </tr>
* <tr>
* <td>{@value org.opengis.referencing.IdentifiedObject#ALIAS_KEY}</td>
* <td>{@link 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 ReferenceIdentifier} (optionally as array)</td>
* <td>{@link #getIdentifiers()}</td>
* </tr>
* <tr>
* <td>{@value org.opengis.referencing.IdentifiedObject#REMARKS_KEY}</td>
* <td>{@link InternationalString} or {@link String}</td>
* <td>{@link #getRemarks()}</td>
* </tr>
* <tr>
* <td>{@value org.opengis.referencing.datum.Datum#ANCHOR_POINT_KEY}</td>
* <td>{@link InternationalString} or {@link String}</td>
* <td>{@link #getAnchorPoint()}</td>
* </tr>
* <tr>
* <td>{@value org.opengis.referencing.datum.Datum#REALIZATION_EPOCH_KEY}</td>
* <td>{@link java.util.Date}</td>
* <td>{@link #getRealizationEpoch()}</td>
* </tr>
* <tr>
* <td>{@value org.opengis.referencing.datum.Datum#DOMAIN_OF_VALIDITY_KEY}</td>
* <td>{@link org.opengis.metadata.extent.Extent}</td>
* <td>{@link #getDomainOfValidity()}</td>
* </tr>
* <tr>
* <td>{@value org.opengis.referencing.datum.Datum#SCOPE_KEY}</td>
* <td>{@link InternationalString} or {@link String}</td>
* <td>{@link #getScope()}</td>
* </tr>
* </table>
*
* @param properties the properties to be given to the identified object.
*
* @see org.apache.sis.referencing.factory.GeodeticObjectFactory#createEngineeringDatum(Map)
*/
public DefaultEngineeringDatum(final Map<String,?> properties) {
super(properties);
}
/**
* Creates a new datum 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 datum the datum to copy.
*
* @see #castOrCopy(EngineeringDatum)
*/
protected DefaultEngineeringDatum(final EngineeringDatum datum) {
super(datum);
}
/**
* Returns a SIS datum 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 DefaultEngineeringDatum castOrCopy(final EngineeringDatum object) {
return (object == null) || (object instanceof DefaultEngineeringDatum) ?
(DefaultEngineeringDatum) object : new DefaultEngineeringDatum(object);
}
/**
* Returns the GeoAPI interface implemented by this class.
* The SIS implementation returns {@code EngineeringDatum.class}.
*
* <div class="note"><b>Note for implementers:</b>
* Subclasses usually do not need to override this method since GeoAPI does not define {@code EngineeringDatum}
* sub-interface. Overriding possibility is left mostly for implementers who wish to extend GeoAPI with their
* own set of interfaces.</div>
*
* @return {@code EngineeringDatum.class} or a user-defined sub-interface.
*/
@Override
public Class<? extends EngineeringDatum> getInterface() {
return EngineeringDatum.class;
}
/**
* Formats this datum as a <cite>Well Known Text</cite> {@code EngineeringDatum[…]} element.
*
* @return {@code "EngineeringDatum"} (WKT 2) or {@code "Local_Datum"} (WKT 1).
*
* @see <a href="http://docs.opengeospatial.org/is/12-063r5/12-063r5.html#76">WKT 2 specification §11.2</a>
*/
@Override
protected String formatTo(final Formatter formatter) {
super.formatTo(formatter);
if (formatter.getConvention().majorVersion() == 1) {
/*
* Datum type was provided for all kind of datum in the legacy OGC 01-009 specification.
* Datum types became provided only for vertical datum in the ISO 19111:2003 specification,
* then removed completely in the ISO 19111:2007 revision. We are supposed to format them
* in WKT 1, but do not have any indication about what the values should be.
*/
formatter.append(0);
return WKTKeywords.Local_Datum;
}
return formatter.shortOrLong(WKTKeywords.EDatum, WKTKeywords.EngineeringDatum);
}
//////////////////////////////////////////////////////////////////////////////////////////////////
//////// ////////
//////// 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 datum in which every attributes are set to a null 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 DefaultEngineeringDatum() {
}
}