org.jboss.weld.exceptions.WeldExceptionKeyMessage Maven / Gradle / Ivy
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* JBoss, Home of Professional Open Source
* Copyright 2008, Red Hat, Inc., and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* Licensed 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.jboss.weld.exceptions;
import java.io.Serializable;
import static org.jboss.weld.logging.LoggerFactory.loggerFactory;
/**
* Exception message based on an enumerated key and optional object arguments.
* This includes localization of the message based on the settings in the JVM
* when the {@link java.lang.Throwable#getMessage()} or
* {@link java.lang.Throwable#getLocalizedMessage()} methods are invoked on a
* Weld exception.
*
* @author David Allen
*/
public class WeldExceptionKeyMessage implements WeldExceptionMessage, Serializable {
private static final long serialVersionUID = 3474682221381024558L;
private Enum messageKey;
private String[] messageArguments;
/**
*
* Creates a new exception message based on an enumerated message key. This
* message will not be localized until it is actually logged or other
* software invokes the {@link #getMessage()} method.
*
*
* @param the message key enumeration
* @param key the message key from the above enumeration
* @param args optional arguments for the message
*/
public > WeldExceptionKeyMessage(E key, Object... args) {
this.messageKey = key;
if ((args != null) && (args.length > 0)) {
this.messageArguments = new String[args.length];
int index = 0;
for (Object arg : args) {
messageArguments[index++] = arg == null ? "null" : arg.toString();
}
}
}
/*
* (non-Javadoc)
* @see org.jboss.weld.exceptions.WeldExceptionMessage#getAsString()
*/
public String getAsString() {
String result = null;
try {
result = loggerFactory().getMessageConveyor().getMessage(messageKey, (Object[]) messageArguments);
} catch (Exception e) {
// We want the using exception to be processed, but also include
// this one in its message
result = "Exception message for key " + messageKey + " not found due to " + e.getLocalizedMessage();
}
if (result == null) {
result = "Exception message for key " + messageKey + " not found";
}
return result;
}
}