| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.commons.math.exception.util; |
| |
| import java.text.MessageFormat; |
| import java.util.Locale; |
| |
| /** |
| * Class for constructing localized messages. |
| * |
| * @since 2.2 |
| * @version $Revision$ $Date$ |
| */ |
| public class MessageFactory { |
| /** |
| * Class contains only static methods. |
| */ |
| private MessageFactory() {} |
| |
| /** |
| * Builds a message string by from a pattern and its arguments. |
| * |
| * @param locale Locale in which the message should be translated. |
| * @param pattern Format specifier. |
| * @param arguments Format arguments. |
| * @return a localized message string. |
| */ |
| public static String buildMessage(Locale locale, |
| Localizable pattern, |
| Object ... arguments) { |
| return buildMessage(locale, null, pattern, arguments); |
| } |
| |
| /** |
| * Builds a message string by from two patterns (specific and general) and |
| * an argument list. |
| * |
| * @param locale Locale in which the message should be translated. |
| * @param specific Format specifier (may be null). |
| * @param general Format specifier (may be null). |
| * @param arguments Format arguments. They will be substituted in |
| * <em>both</em> the {@code general} and {@code specific} format specifiers. |
| * @return a localized message string. |
| */ |
| public static String buildMessage(Locale locale, |
| Localizable specific, |
| Localizable general, |
| Object ... arguments) { |
| final StringBuilder sb = new StringBuilder(); |
| if (general != null) { |
| final MessageFormat fmt = new MessageFormat(general.getLocalizedString(locale), locale); |
| sb.append(fmt.format(arguments)); |
| } |
| if (specific != null) { |
| if (general != null) { |
| sb.append(": "); |
| } |
| final MessageFormat fmt = new MessageFormat(specific.getLocalizedString(locale), locale); |
| sb.append(fmt.format(arguments)); |
| } |
| |
| return sb.toString(); |
| } |
| } |