org.n52.shetland.ogc.ows.OwsLanguageString.java Source code

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Here is the source code for org.n52.shetland.ogc.ows.OwsLanguageString.java

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/*
 * Copyright 2015-2018 52North Initiative for Geospatial Open Source
 * Software GmbH
 *
 * Licensed 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.n52.shetland.ogc.ows;

import java.util.Comparator;
import java.util.Objects;
import java.util.Optional;

import org.n52.janmayen.Optionals;
import org.n52.janmayen.i18n.LocalizedString;

import com.google.common.base.MoreObjects;
import com.google.common.base.Strings;

/**
 * TODO JavaDoc
 *
 * @author Christian Autermann
 */
public class OwsLanguageString implements Comparable<OwsLanguageString> {
    private static final Comparator<OwsLanguageString> COMPARATOR = Comparator
            .nullsLast(Comparator.comparing(OwsLanguageString::getLang, Optionals.nullsLast())
                    .thenComparing(OwsLanguageString::getValue));
    private final String lang;
    private final String value;

    public OwsLanguageString(String lang, String value) {
        this.lang = Strings.emptyToNull(lang);
        this.value = Objects.requireNonNull(Strings.emptyToNull(value));
    }

    public OwsLanguageString(LocalizedString s) {
        this(s.getLangString(), s.getText());
    }

    public OwsLanguageString(String value) {
        this(null, value);
    }

    public Optional<String> getLang() {
        return Optional.ofNullable(this.lang);
    }

    public String getValue() {
        return this.value;
    }

    @Override
    public int hashCode() {
        return Objects.hash(this.lang, this.value);
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final OwsLanguageString that = (OwsLanguageString) obj;
        return Objects.equals(this.lang, that.lang) && Objects.equals(this.value, that.value);
    }

    @Override
    public String toString() {
        return MoreObjects.toStringHelper(this).omitNullValues().add("lang", this.lang).add("value", this.value)
                .toString();
    }

    @Override
    public int compareTo(OwsLanguageString o) {
        return COMPARATOR.compare(this, o);
    }

}