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• MultivaluedMap.java

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

/*
 * Copyright (c) 2010, 2017 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

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);

}