ch.qos.cal10n.MessageConveyor Maven / Gradle / Ivy
/*
* Copyright (c) 2009 QOS.ch All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package ch.qos.cal10n;
import java.text.MessageFormat;
import java.util.Locale;
import java.util.ResourceBundle;
import ch.qos.cal10n.util.AnnotationExtractor;
/**
* The default implementation for {@link IMessageConveyor} based on resource
* bundles.
*
*
* See also {@link #getMessage(Enum, Object...)} for details.
*
* @author Ceki Gülcü
*/
public class MessageConveyor implements IMessageConveyor {
Locale locale;
/**
* The {@link Locale} associated with this instance.
*
* @param locale
*/
public MessageConveyor(Locale locale) {
this.locale = locale;
}
/**
* Given an enum as key, find the corresponding resource bundle and return the
* corresponding internationalized.
*
*
* The name of the resource bundle is defined via the
* {@link ResourceBundleName} annotation whereas the locale is specified in
* this MessageConveyor instance's constructor.
*
* @param key
* an enum instance used as message key
*
*/
public > String getMessage(E key, Object... args) {
String keyAsStr = key.toString();
String resouceBundleName = AnnotationExtractor.getResourceBundleName(key
.getClass());
if (resouceBundleName == null) {
throw new IllegalArgumentException(
"Missing @ResourceBundleName annotation in enum type [" + key.getClass().getName()
+ "]. See also " + Cal10nConstants.MISSING_RB_ANNOTATION_URL);
}
ResourceBundle rb = ResourceBundle.getBundle(resouceBundleName, locale);
String value = rb.getString(keyAsStr);
if (value == null) {
return "No key found for " + keyAsStr;
} else {
if (args == null || args.length == 0) {
return value;
} else {
return MessageFormat.format(value, args);
}
}
}
public String getMessage(MessageParameterObj mpo) {
if (mpo == null) {
throw new IllegalArgumentException(
"MessageParameterObj argumument cannot be null");
}
return getMessage(mpo.getKey(), mpo.getArgs());
}
}