/*
* $Id: MissingParserProblemReporter.java 20321 2010-11-24 15:21:24Z dfeist $
* --------------------------------------------------------------------------------------
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
*
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.config.spring;
import org.springframework.beans.factory.parsing.FailFastProblemReporter;
import org.springframework.beans.factory.parsing.Problem;
import org.w3c.dom.Element;
/**
* A very simple extension to {@link org.springframework.beans.factory.parsing.FailFastProblemReporter}
* that intercepts errors related to missing definition parsers to give a more helpful message.
* In the future we may want to replace this by something more sophisticated that allows
* different problems to be resolved by different "pluggable" components...
*/
public class MissingParserProblemReporter extends FailFastProblemReporter
{
public static final String NO_PARSER_PREFIX = "Cannot locate BeanDefinitionParser";
@Override
public void fatal(Problem problem)
{
if (isMissingParser(problem))
{
problem = extendProblemDetails(problem);
}
super.fatal(problem);
}
protected boolean isMissingParser(Problem problem)
{
// Spring doesn't give us much useful data here - parseState and rootCause are null
String message = problem.getMessage();
return (null != message && message.startsWith(NO_PARSER_PREFIX));
}
protected Problem extendProblemDetails(Problem problem)
{
try
{
String element = ((Element) problem.getLocation().getSource()).getLocalName();
String namespace = ((Element) problem.getLocation().getSource()).getNamespaceURI();
String message = "The element '" + element + "' does not have an associated Bean Definition Parser."
+" Is the module or transport associated with " + namespace + " present on the classpath?";
return new Problem(message, problem.getLocation(), problem.getParseState(), problem.getRootCause());
}
catch (Exception e)
{
// fall back to previous message
return problem;
}
}
}