/*
* Copyright 2002-2008 the original author or authors.
*
* 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.springframework.core;
/**
* Helper class for implementing exception classes which are capable of
* holding nested exceptions. Necessary because we can't share a base
* class among different exception types.
*
* <p>Mainly for use within the framework.
*
* @author Juergen Hoeller
* @since 2.0
* @see NestedRuntimeException
* @see NestedCheckedException
* @see NestedIOException
* @see org.springframework.web.util.NestedServletException
*/
public abstract class NestedExceptionUtils {
/**
* Build a message for the given base message and root cause.
* @param message the base message
* @param cause the root cause
* @return the full exception message
*/
public static String buildMessage(String message, Throwable cause) {
if (cause != null) {
StringBuilder sb = new StringBuilder();
if (message != null) {
sb.append(message).append("; ");
}
sb.append("nested exception is ").append(cause);
return sb.toString();
}
else {
return message;
}
}
}
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