1 /* 2 * Copyright (c) 2009 QOS.ch All rights reserved. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a copy 5 * of this software and associated documentation files (the "Software"), to deal 6 * in the Software without restriction, including without limitation the rights 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 8 * copies of the Software, and to permit persons to whom the Software is 9 * furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 20 * SOFTWARE. 21 */ 22 23 package ch.qos.cal10n; 24 25 import java.text.MessageFormat; 26 import java.util.Locale; 27 import java.util.ResourceBundle; 28 29 import ch.qos.cal10n.util.AnnotationExtractor; 30 31 /** 32 * The default implementation for {@link IMessageConveyor} based on resource 33 * bundles. 34 * 35 * <p> 36 * See also {@link #getMessage(Enum, Object...)} for details. 37 * 38 * @author Ceki Gülcü 39 */ 40 public class MessageConveyor implements IMessageConveyor { 41 42 Locale locale; 43 44 /** 45 * The {@link Locale} associated with this instance. 46 * 47 * @param locale 48 */ 49 public MessageConveyor(Locale locale) { 50 this.locale = locale; 51 } 52 53 /** 54 * Given an enum e, find the corresponding resource bundle and return the 55 * internationalized message defined by the message code 'e'. 56 * 57 * <p> 58 * The name of the resource bundle is defined via the 59 * {@link ResourceBundleName} annotation whereas the locale was specified in 60 * this MessageConveyor instance's constructor. 61 * 62 * @param e an enum instance used as message code 63 * 64 */ 65 public <E extends Enum<?>> String getMessage(E e, Object... args) { 66 String code = e.toString(); 67 68 String resouceBundleName = AnnotationExtractor.getResourceBundleName(e 69 .getClass()); 70 if (resouceBundleName == null) { 71 throw new IllegalArgumentException( 72 "Missing ResourceBundleAnnotation in [" + e.getClass().getName() 73 + "]. See also " + Cal10nConstants.MISSING_RB_ANNOTATION_URL); 74 } 75 ResourceBundle rb = ResourceBundle.getBundle(resouceBundleName, locale); 76 77 String value = rb.getString(code); 78 if (value == null) { 79 return "No key found for " + code; 80 } else { 81 if (args == null || args.length == 0) { 82 return value; 83 } else { 84 return MessageFormat.format(value, args); 85 } 86 } 87 } 88 89 }