/*

 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

package java.util.spi;

import java.util.ResourceBundle;

/**

 * An interface for service providers that provide implementations of {@link

 * java.util.ResourceBundle.Control}. The <a

 * href="../ResourceBundle.html#default_behavior">default resource bundle loading

 * behavior</a> of the {@code ResourceBundle.getBundle} factory methods that take

 * no {@link java.util.ResourceBundle.Control} instance can be modified with {@code

 * ResourceBundleControlProvider} implementations.

 *

 * <p>Provider implementations must be packaged using the <a

 * href="../../../../technotes/guides/extensions/index.html">Java Extension

 * Mechanism</a> as installed extensions. Refer to {@link java.util.ServiceLoader}

 * for the extension packaging. Any installed {@code

 * ResourceBundleControlProvider} implementations are loaded using {@link

 * java.util.ServiceLoader} at the {@code ResourceBundle} class loading time.

 *

 * @author Masayoshi Okutsu

 * @since 1.8

 * @see ResourceBundle#getBundle(String, java.util.Locale, ClassLoader, ResourceBundle.Control)

 *      ResourceBundle.getBundle

 * @see java.util.ServiceLoader#loadInstalled(Class)

 */

public interface ResourceBundleControlProvider {

    /**

     * Returns a {@code ResourceBundle.Control} instance that is used

     * to handle resource bundle loading for the given {@code

     * baseName}. This method must return {@code null} if the given

     * {@code baseName} isn't handled by this provider.

     *

     * @param baseName the base name of the resource bundle

     * @return a {@code ResourceBundle.Control} instance,

     *         or {@code null} if the given {@code baseName} is not

     *         applicable to this provider.

     * @throws NullPointerException if {@code baseName} is {@code null}

     */

    public ResourceBundle.Control getControl(String baseName);

}