/*
* 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.deltaspike.core.impl.message;
import org.apache.deltaspike.core.api.message.MessageContext;
import org.apache.deltaspike.core.api.message.MessageResolver;
import org.apache.deltaspike.core.util.PropertyFileUtils;
import javax.enterprise.context.Dependent;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
@Dependent
@SuppressWarnings("UnusedDeclaration")
public class DefaultMessageResolver implements MessageResolver
{
private static final long serialVersionUID = 5834411208472341006L;
@Override
public String getMessage(MessageContext messageContext, String messageTemplate, String category)
{
// we can use {{ as escaping for now
if (messageTemplate.startsWith("{{"))
{
// in which case we just cut of the first '{'
return messageTemplate.substring(1);
}
if (messageTemplate.startsWith("{") && messageTemplate.endsWith("}"))
{
String resourceKey = messageTemplate.substring(1, messageTemplate.length() - 1);
List<String> messageSources = getMessageSources(messageContext);
if (messageSources == null || messageSources.isEmpty())
{
// using {} without a bundle is always an error
return null;
}
Iterator<String> messageSourceIterator = messageSources.iterator();
Locale locale = messageContext.getLocale();
String currentMessageSource;
while (messageSourceIterator.hasNext())
{
currentMessageSource = messageSourceIterator.next();
try
{
ResourceBundle messageBundle = PropertyFileUtils.getResourceBundle(currentMessageSource, locale);
if (category != null && category.length() > 0)
{
try
{
return messageBundle.getString(resourceKey + "_" + category);
}
catch (MissingResourceException e)
{
// we fallback on the version without the category
return messageBundle.getString(resourceKey);
}
}
return messageBundle.getString(resourceKey);
}
catch (MissingResourceException e)
{
if (!messageSourceIterator.hasNext())
{
return null;
}
}
}
}
return messageTemplate;
}
protected List<String> getMessageSources(MessageContext messageContext)
{
return messageContext.getMessageSources();
}
}