| /* |
| * 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 java.util.Objects; |
| import javax.xml.bind.annotation.XmlType; |
| import javax.xml.bind.annotation.XmlElement; |
| 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.VerticalDatum; |
| import org.opengis.referencing.datum.VerticalDatumType; |
| import org.apache.sis.io.wkt.Formatter; |
| import org.apache.sis.util.ComparisonMode; |
| import org.apache.sis.internal.jaxb.Context; |
| import org.apache.sis.internal.xml.LegacyNamespaces; |
| import org.apache.sis.internal.referencing.WKTKeywords; |
| import org.apache.sis.internal.referencing.VerticalDatumTypes; |
| import org.apache.sis.internal.metadata.MetadataUtilities; |
| |
| import static org.apache.sis.util.ArgumentChecks.ensureNonNull; |
| |
| |
| /** |
| * Identifies a particular reference level surface used as a zero-height surface. |
| * There are several types of vertical datums, and each may place constraints on the |
| * {@linkplain org.opengis.referencing.cs.CoordinateSystemAxis coordinate system axis} with which |
| * it is combined to create a {@linkplain org.opengis.referencing.crs.VerticalCRS vertical CRS}. |
| * |
| * <div class="section">Creating new vertical datum instances</div> |
| * New instances can be created either directly by specifying all information to a factory method (choices 3 |
| * and 4 below), or indirectly by specifying the identifier of an entry in a database (choices 1 and 2 below). |
| * Choice 1 in the following list is the easiest but most restrictive way to get a vertical datum. |
| * The other choices provide more freedom. |
| * |
| * <ol> |
| * <li>Create a {@code VerticalDatum} from one of the static convenience shortcuts listed in |
| * {@link org.apache.sis.referencing.CommonCRS.Vertical#datum()}.</li> |
| * <li>Create a {@code VerticalDatum} from an identifier in a database by invoking |
| * {@link org.opengis.referencing.datum.DatumAuthorityFactory#createVerticalDatum(String)}.</li> |
| * <li>Create a {@code VerticalDatum} by invoking the {@code DatumFactory.createVerticalDatum(…)} method |
| * (implemented for example by {@link org.apache.sis.referencing.factory.GeodeticObjectFactory}).</li> |
| * <li>Create a {@code DefaultVerticalDatum} by invoking the |
| * {@linkplain #DefaultVerticalDatum(Map, VerticalDatumType) constructor}.</li> |
| * </ol> |
| * |
| * <b>Example:</b> the following code gets a vertical datum for height above the geoid: |
| * |
| * {@preformat java |
| * VerticalDatum datum = CommonCRS.Vertical.GEOID.datum(); |
| * } |
| * |
| * <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.CommonCRS.Vertical#datum() |
| * @see org.apache.sis.referencing.cs.DefaultVerticalCS |
| * @see org.apache.sis.referencing.crs.DefaultVerticalCRS |
| * @see org.apache.sis.referencing.factory.GeodeticAuthorityFactory#createVerticalDatum(String) |
| * |
| * @since 0.4 |
| * @module |
| */ |
| @XmlType(name = "VerticalDatumType") |
| @XmlRootElement(name = "VerticalDatum") |
| public class DefaultVerticalDatum extends AbstractDatum implements VerticalDatum { |
| /** |
| * Serial number for inter-operability with different versions. |
| */ |
| private static final long serialVersionUID = 380347456670516572L; |
| |
| /** |
| * The type of this vertical datum. |
| * If {@code null}, a value will be inferred from the name by {@link #type()}. |
| * |
| * @see #type() |
| * @see #getVerticalDatumType() |
| */ |
| private VerticalDatumType type; |
| |
| /** |
| * Creates a vertical 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. |
| * @param type the type of this vertical datum. |
| * |
| * @see org.apache.sis.referencing.factory.GeodeticObjectFactory#createVerticalDatum(Map, VerticalDatumType) |
| */ |
| public DefaultVerticalDatum(final Map<String,?> properties, final VerticalDatumType type) { |
| super(properties); |
| this.type = type; |
| ensureNonNull("type", type); |
| } |
| |
| /** |
| * 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(VerticalDatum) |
| */ |
| protected DefaultVerticalDatum(final VerticalDatum datum) { |
| super(datum); |
| type = datum.getVerticalDatumType(); |
| } |
| |
| /** |
| * 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 DefaultVerticalDatum castOrCopy(final VerticalDatum object) { |
| return (object == null) || (object instanceof DefaultVerticalDatum) ? |
| (DefaultVerticalDatum) object : new DefaultVerticalDatum(object); |
| } |
| |
| /** |
| * Returns the GeoAPI interface implemented by this class. |
| * The SIS implementation returns {@code VerticalDatum.class}. |
| * |
| * <div class="note"><b>Note for implementers:</b> |
| * Subclasses usually do not need to override this method since GeoAPI does not define {@code VerticalDatum} |
| * sub-interface. Overriding possibility is left mostly for implementers who wish to extend GeoAPI with their |
| * own set of interfaces.</div> |
| * |
| * @return {@code VerticalDatum.class} or a user-defined sub-interface. |
| */ |
| @Override |
| public Class<? extends VerticalDatum> getInterface() { |
| return VerticalDatum.class; |
| } |
| |
| /** |
| * Returns the type of this datum, or infers the type from the datum name if no type were specified. |
| * The later case occurs after unmarshalling, since GML 3.2 does not contain any attribute for the datum type. |
| * It may also happen if the datum were created using reflection. |
| * |
| * <p>This method uses heuristic rules and may be changed in any future SIS version. If the type can not be |
| * determined, default on the ellipsoidal type since it will usually implies no additional calculation.</p> |
| * |
| * <p>No synchronization needed; this is not a problem if this value is computed twice. |
| * This method returns only existing immutable instances.</p> |
| * |
| * @see #getVerticalDatumType() |
| * @see #getTypeElement() |
| */ |
| private VerticalDatumType type() { |
| VerticalDatumType t = type; |
| if (t == null) { |
| final ReferenceIdentifier name = super.getName(); |
| type = t = VerticalDatumTypes.guess(name != null ? name.getCode() : null, super.getAlias(), null); |
| } |
| return t; |
| } |
| |
| /** |
| * Returns the type of this vertical datum. |
| * |
| * <div class="note"><b>Historical note:</b> |
| * this property was defined in the ISO 19111 specification published in 2003, |
| * but removed from the revision published 2007. |
| * This property provides an information similar to the {@linkplain #getAnchorPoint() anchor definition}, |
| * but in a programmatic way more suitable to coordinate transformation engines.</div> |
| * |
| * @return the type of this vertical datum. |
| */ |
| @Override |
| public VerticalDatumType getVerticalDatumType() { |
| return type(); |
| } |
| |
| /** |
| * Compare this vertical datum with the specified object for equality. |
| * |
| * @param object the object to compare to {@code this}. |
| * @param mode {@link ComparisonMode#STRICT STRICT} for performing a strict comparison, or |
| * {@link ComparisonMode#IGNORE_METADATA IGNORE_METADATA} for comparing only |
| * properties relevant to coordinate transformations. |
| * @return {@code true} if both objects are equal. |
| */ |
| @Override |
| public boolean equals(final Object object, final ComparisonMode mode) { |
| if (object == this) { |
| return true; // Slight optimization. |
| } |
| if (!super.equals(object, mode)) { |
| return false; |
| } |
| switch (mode) { |
| case STRICT: { |
| return type().equals(((DefaultVerticalDatum) object).type()); |
| } |
| case BY_CONTRACT: { |
| return Objects.equals(getVerticalDatumType(), ((VerticalDatum) object).getVerticalDatumType()); |
| } |
| default: { |
| /* |
| * VerticalDatumType is considered as metadata because it is related to the anchor definition, |
| * which is itself considered as metadata. Furthermore GeodeticObjectParser and EPSGDataAccess |
| * do not always set this property to the same value: the former uses the information provided |
| * by the coordinate system axis while the other does not. |
| */ |
| return true; |
| } |
| } |
| } |
| |
| /** |
| * Invoked by {@code hashCode()} for computing the hash code when first needed. |
| * See {@link org.apache.sis.referencing.AbstractIdentifiedObject#computeHashCode()} |
| * for more information. |
| * |
| * @return the hash code value. This value may change in any future Apache SIS version. |
| */ |
| @Override |
| protected long computeHashCode() { |
| return super.computeHashCode() + type().hashCode(); |
| } |
| |
| /** |
| * Formats this datum as a <cite>Well Known Text</cite> {@code VerticalDatum[…]} element. |
| * |
| * <div class="note"><b>Compatibility note:</b> |
| * OGC 01-009 defined numerical codes for various vertical datum types, for example 2005 for geoidal height |
| * and 2002 for ellipsoidal height. Such codes were formatted for all {@code Datum} subtypes in WKT 1. |
| * Datum types became provided only for vertical datum in the ISO 19111:2003 specification, then removed |
| * completely in ISO 19111:2007.</div> |
| * |
| * @return {@code "VerticalDatum"} (WKT 2) or {@code "Vert_Datum"} (WKT 1). |
| * |
| * @see <a href="http://docs.opengeospatial.org/is/12-063r5/12-063r5.html#71">WKT 2 specification §10.2</a> |
| */ |
| @Override |
| protected String formatTo(final Formatter formatter) { |
| super.formatTo(formatter); |
| if (formatter.getConvention().majorVersion() == 1) { |
| formatter.append(VerticalDatumTypes.toLegacy(type())); |
| return WKTKeywords.Vert_Datum; |
| } |
| return formatter.shortOrLong(WKTKeywords.VDatum, WKTKeywords.VerticalDatum); |
| } |
| |
| |
| |
| |
| ////////////////////////////////////////////////////////////////////////////////////////////////// |
| //////// //////// |
| //////// 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 DefaultVerticalDatum() { |
| } |
| |
| /** |
| * Returns the type to be marshalled to XML. |
| * This element was present in GML 3.0 and 3.1, but has been removed from GML 3.2. |
| * |
| * @see <a href="http://issues.apache.org/jira/browse/SIS-160">SIS-160: Need XSLT between GML 3.1 and 3.2</a> |
| */ |
| @XmlElement(name = "verticalDatumType") |
| private VerticalDatumType getTypeElement() { |
| return Context.isGMLVersion(Context.current(), LegacyNamespaces.VERSION_3_2) ? null : getVerticalDatumType(); |
| } |
| |
| /** |
| * Invoked by JAXB only. The vertical datum type is set only if it has not already been specified. |
| */ |
| private void setTypeElement(final VerticalDatumType t) { |
| if (type == null) { |
| type = t; |
| } else { |
| MetadataUtilities.propertyAlreadySet(DefaultVerticalDatum.class, "setTypeElement", "verticalDatumType"); |
| } |
| } |
| } |
