| /* |
| * 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.metadata.simple; |
| |
| import java.util.Objects; |
| import java.io.Serializable; |
| import org.opengis.util.InternationalString; |
| import org.opengis.metadata.citation.Citation; |
| import org.apache.sis.util.CharSequences; |
| import org.apache.sis.util.Classes; |
| import org.apache.sis.util.Deprecable; |
| import org.apache.sis.util.privy.Constants; |
| |
| // Specific to the geoapi-4.0 branch: |
| import java.util.Optional; |
| import org.opengis.metadata.Identifier; |
| |
| |
| /** |
| * An implementation of {@link Identifier} as a wrapper around a {@link Citation}. |
| * |
| * @author Martin Desruisseaux (Geomatys) |
| */ |
| public class SimpleIdentifier implements Identifier, Deprecable, Serializable { |
| /** |
| * For cross-version compatibility. |
| */ |
| private static final long serialVersionUID = -3544709943777129514L; |
| |
| /** |
| * Organization or party responsible for definition and maintenance of the |
| * {@linkplain #code}, or {@code null} if none. It can be a bibliographical |
| * reference to an international standard such as ISO 19115. |
| * |
| * @see #getAuthority() |
| * @see #getCodeSpace() |
| * @see #getVersion() |
| */ |
| @SuppressWarnings("serial") // Most SIS implementations are serializable. |
| protected final Citation authority; |
| |
| /** |
| * Alphanumeric value identifying an instance in the namespace. |
| * It can be for example the name of a class defined by the international standard |
| * referenced by the {@linkplain #authority} citation. |
| * |
| * @see #getCode() |
| */ |
| protected final String code; |
| |
| /** |
| * {@code true} if this identifier is deprecated. |
| */ |
| protected final boolean isDeprecated; |
| |
| /** |
| * Creates a new reference identifier. |
| * |
| * @param authority responsible party for definition and maintenance of the code, or null. |
| * @param code alphanumeric value identifying an instance in the namespace. |
| * @param isDeprecated {@code true} if this identifier is deprecated. |
| */ |
| public SimpleIdentifier(final Citation authority, final String code, final boolean isDeprecated) { |
| this.authority = authority; |
| this.code = code; |
| this.isDeprecated = isDeprecated; |
| } |
| |
| /** |
| * Returns the organization or party responsible for definition and maintenance |
| * of the {@linkplain #getCode() code}, or {@code null} if none. It can be a |
| * bibliographical reference to an international standard such as ISO 19115. |
| * |
| * <p>The default implementation returns the citation specified at construction time.</p> |
| * |
| * @return the authority given at construction time, or {@code null} if none. |
| */ |
| @Override |
| public Citation getAuthority() { |
| return authority; |
| } |
| |
| /** |
| * Returns the identifier or namespace in which the code is valid, or {@code null} if none. |
| * The default implementation returns the shortest identifier of the {@linkplain #getAuthority() authority}, |
| * if any. |
| * |
| * @return a code space inferred from the authority given at construction time, or {@code null} if none. |
| */ |
| @Override |
| public String getCodeSpace() { |
| return org.apache.sis.metadata.iso.citation.Citations.toCodeSpace(authority); |
| } |
| |
| /** |
| * Returns the alphanumeric value identifying an instance in the namespace. |
| * It can be for example the name of a class defined by the international standard |
| * referenced by the {@linkplain #getAuthority() authority} citation. |
| * |
| * <p>The default implementation returns the code specified at construction time.</p> |
| * |
| * @return the code given at construction time, or {@code null} if none. |
| */ |
| @Override |
| public String getCode() { |
| return code; |
| } |
| |
| /** |
| * Version identifier for the namespace, as specified by the code authority. |
| * When appropriate, the edition is identified by the effective date, coded |
| * using ISO 8601 date format. |
| * |
| * @return a version inferred from the authority given at construction time, or {@code null} if none. |
| */ |
| @Override |
| public String getVersion() { |
| if (authority != null) { |
| final InternationalString version = authority.getEdition(); |
| if (version != null) { |
| return version.toString(); |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * An optional free text. |
| */ |
| @Override |
| public Optional<InternationalString> getRemarks() { |
| return Optional.empty(); |
| } |
| |
| /** |
| * {@code true} if this identifier is deprecated. |
| */ |
| @Override |
| public boolean isDeprecated() { |
| return isDeprecated; |
| } |
| |
| /** |
| * Returns {@code true} if the given object is of the same class as this |
| * {@code SimpleIdentifier} and has the same values. |
| * |
| * @param obj the object to compare with this {@code SimpleIdentifier} for equality. |
| * @return {@code true} if both objects are equal. |
| */ |
| @Override |
| public boolean equals(final Object obj) { |
| if (obj != null && obj.getClass() == getClass()) { |
| final SimpleIdentifier that = (SimpleIdentifier) obj; |
| return Objects.equals(code, that.code) && |
| Objects.equals(authority, that.authority) && |
| isDeprecated == that.isDeprecated; |
| } |
| return false; |
| } |
| |
| /** |
| * Returns a hash code value for this identifier. |
| * |
| * @return a hash code value for this identifier. |
| */ |
| @Override |
| public int hashCode() { |
| return Objects.hash(authority, code, isDeprecated) ^ (int) serialVersionUID; |
| } |
| |
| /** |
| * Returns a string representation of this identifier. |
| * |
| * <p>For customizing this string representation, see {@link #appendStringTo(StringBuilder)}.</p> |
| */ |
| @Override |
| public final String toString() { |
| final String classname = Classes.getShortClassName(this); |
| final StringBuilder buffer = new StringBuilder(classname.length() + CharSequences.length(code) + 10); |
| buffer.append(classname).append('['); |
| final String codespace = getCodeSpace(); // Subclasses may have overridden this method. |
| boolean open = false; |
| if (codespace != null) { |
| buffer.append('“').append(codespace); |
| open = true; |
| } |
| if (code != null) { |
| buffer.append(open ? Constants.DEFAULT_SEPARATOR : '“').append(code); |
| open = true; |
| } |
| if (open) { |
| buffer.append('”'); |
| } |
| appendStringTo(buffer); |
| return buffer.append(']').toString(); |
| } |
| |
| /** |
| * Invoked by {@link #toString()} in order to allow subclasses to add additional information. |
| * This method is invoked just before the final {@code ']'} is appended to the buffer. |
| * |
| * @param buffer a buffer filled with the {@link #toString()} characters, that subclasses can update. |
| */ |
| protected void appendStringTo(final StringBuilder buffer) { |
| } |
| } |