/*
* Copyright 2002-2009 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.oxm.xstream;
import com.thoughtworks.xstream.converters.ConversionException;
import com.thoughtworks.xstream.io.StreamException;
import com.thoughtworks.xstream.mapper.CannotResolveClassException;
import org.springframework.oxm.MarshallingFailureException;
import org.springframework.oxm.UncategorizedMappingException;
import org.springframework.oxm.UnmarshallingFailureException;
import org.springframework.oxm.XmlMappingException;
/**
* Generic utility methods for working with XStream. Mainly for internal use within the framework.
*
* @author Arjen Poutsma
* @author Juergen Hoeller
* @since 3.0
*/
abstract class XStreamUtils {
/**
* Convert the given XStream exception to an appropriate exception from the
* <code>org.springframework.oxm</code> hierarchy.
* <p>A boolean flag is used to indicate whether this exception occurs during marshalling or
* unmarshalling, since XStream itself does not make this distinction in its exception hierarchy.
* @param ex XStream exception that occured
* @param marshalling indicates whether the exception occurs during marshalling (<code>true</code>),
* or unmarshalling (<code>false</code>)
* @return the corresponding <code>XmlMappingException</code>
*/
public static XmlMappingException convertXStreamException(Exception ex, boolean marshalling) {
if (ex instanceof StreamException || ex instanceof CannotResolveClassException ||
ex instanceof ConversionException) {
if (marshalling) {
return new MarshallingFailureException("XStream marshalling exception", ex);
}
else {
return new UnmarshallingFailureException("XStream unmarshalling exception", ex);
}
}
else {
// fallback
return new UncategorizedMappingException("Unknown XStream exception", ex);
}
}
}
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