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

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Here is the source code for org.n52.shetland.ogc.ows.OwsValuesReference.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.net.URI;
import java.util.Objects;

import com.google.common.base.Strings;

/**
 * Reference to externally specified list of all the valid values and/or ranges
 * of values for this quantity.
 *
 * @author Christian Autermann
 */
public class OwsValuesReference implements OwsPossibleValues {

    private final URI reference;
    private final String value;

    public OwsValuesReference(URI reference, String value) {
        this.reference = Objects.requireNonNull(reference);
        this.value = Strings.nullToEmpty(value);
    }

    public OwsValuesReference(URI reference) {
        this(reference, null);
    }

    @Override
    public boolean isValuesReference() {
        return true;
    }

    @Override
    public OwsValuesReference asValuesReference() {
        return this;
    }

    public URI getReference() {
        return this.reference;
    }

    /**
     * Human-readable name of the list of values provided by the referenced
     * document. Can be empty string when this list has no name.
     *
     * @return the value
     */
    public String getValue() {
        return this.value;
    }

    @Override
    public int hashCode() {
        int hash = 3;
        hash = 89 * hash + Objects.hashCode(this.reference);
        hash = 89 * hash + Objects.hashCode(this.value);
        return hash;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final OwsValuesReference other = (OwsValuesReference) obj;
        return Objects.equals(this.value, other.value) && Objects.equals(this.reference, other.reference);
    }

    @Override
    public String toString() {
        return "OwsValuesReference{" + "reference=" + reference + ", value=" + value + '}';
    }

}