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• MultivaluedMap.java

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javax.ws.rs.core.MultivaluedMap Maven / Gradle / Ivy

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010-2012 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
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 */
package javax.ws.rs.core;

import java.util.List;
import java.util.Map;

/**
 * A map of key-values pairs. Each key can have zero or more values.
 *
 * @param  the type of keys maintained by this map
 * @param  the type of mapped values
 * @author Paul Sandoz
 * @author Marc Hadley
 * @author Marek Potociar
 * @since 1.0
 */
public interface MultivaluedMap extends Map> {

    /**
     * Set the key's value to be a one item list consisting of the supplied value.
     * Any existing values will be replaced.
     *
     * @param key   the key
     * @param value the single value of the key
     */
    void putSingle(K key, V value);

    /**
     * Add a value to the current list of values for the supplied key.
     *
     * @param key   the key
     * @param value the value to be added.
     */
    void add(K key, V value);

    /**
     * A shortcut to get the first value of the supplied key.
     *
     * @param key the key
     * @return the first value for the specified key or null if the key is
     *         not in the map.
     */
    V getFirst(K key);

    /**
     * Add multiple values to the current list of values for the supplied key. If
     * the supplied array of new values is empty, method returns immediately.
     * Method throws a {@code NullPointerException} if the supplied array of values
     * is {@code null}.
     *
     * @param key       the key.
     * @param newValues the values to be added.
     * @throws NullPointerException if the supplied array of new values is {@code null}.
     * @since 2.0
     */
    void addAll(K key, V... newValues);

    /**
     * Add all the values from the supplied value list to the current list of
     * values for the supplied key. If the supplied value list is empty, method
     * returns immediately. Method throws a {@code NullPointerException} if the
     * supplied array of values is {@code null}.
     *
     * @param key       the key.
     * @param valueList the list of values to be added.
     * @throws NullPointerException if the supplied value list is {@code null}.
     * @since 2.0
     */
    void addAll(K key, List valueList);

    /**
     * Add a value to the first position in the current list of values for the
     * supplied key.
     *
     * @param key   the key
     * @param value the value to be added.
     * @since 2.0
     */
    void addFirst(K key, V value);

    /**
     * Compare the specified map with this map for equality modulo the order
     * of values for each key. Specifically, the values associated with
     * each key are compared as if they were ordered lists.
     *
     * @param otherMap map to be compared to this one.
     * @return true if the maps are equal modulo value ordering.
     * @since 2.0
     */
    boolean equalsIgnoreValueOrder(MultivaluedMap otherMap);

}