org.glassfish.persistence.common.I18NHelper Maven / Gradle / Ivy

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/*
 * Copyright (c) 1997, 2018 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 org.glassfish.persistence.common;

import java.util.*;
import java.text.MessageFormat;

public class I18NHelper {
	private static final String bundleSuffix = ".Bundle";	// NOI18N
	private static Hashtable	bundles = new Hashtable();
  	private static Locale 		locale = Locale.getDefault();

	/**
	 * Constructor
	 */
  	public I18NHelper() {
  	}

	/**
	 * Load ResourceBundle by bundle name
	 */
  	public static ResourceBundle loadBundle(String bundleName) {
		return loadBundle(bundleName, I18NHelper.class.getClassLoader());
  	}

	/**
	 * Load ResourceBundle by bundle name and class loader
	 */
  	public static ResourceBundle loadBundle(String bundleName, ClassLoader loader) {
      		ResourceBundle messages = (ResourceBundle)bundles.get(bundleName);

    		if (messages == null) //not found as loaded - add
		{
      			messages = ResourceBundle.getBundle(bundleName, locale, loader);
			bundles.put(bundleName, messages);
    		}
		return messages;
  	}

	/**
	 * Load ResourceBundle by class object - figure out the bundle name
	 * for the class object's package and use the class' class loader.
	 */
  	public static ResourceBundle loadBundle(Class classObject) {
		return loadBundle(
    			getPackageName(classObject.getName()) + bundleSuffix,
    				classObject.getClassLoader());
	}

  
	/**
	 * Returns message as String
	 */
	final public static String getMessage(ResourceBundle messages, String messageKey) 
	{
    		return messages.getString(messageKey);
  	}

  	/**
	 * Formats message by adding Array of arguments
	 */
	final public static String getMessage(ResourceBundle messages, String messageKey, Object msgArgs[]) 
	{
    		for (int i=0; i