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/*
* 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.tuscany.sca.core.databinding.transformers;
import org.apache.tuscany.sca.databinding.DataBinding;
import org.apache.tuscany.sca.databinding.ExceptionHandler;
import org.apache.tuscany.sca.databinding.Mediator;
import org.apache.tuscany.sca.databinding.PullTransformer;
import org.apache.tuscany.sca.databinding.TransformationContext;
import org.apache.tuscany.sca.databinding.Transformer;
import org.apache.tuscany.sca.databinding.impl.BaseTransformer;
import org.apache.tuscany.sca.interfacedef.DataType;
import org.osoa.sca.annotations.Reference;
import org.osoa.sca.annotations.Service;
/**
* This is a special transformer to transform the exception from one IDL to the
* other one
*/
@Service(Transformer.class)
public class Exception2ExceptionTransformer extends BaseTransformer<Object[], Object[]> implements
PullTransformer<Exception, Exception> {
protected Mediator mediator;
public Exception2ExceptionTransformer() {
super();
}
@Override
public String getSourceDataBinding() {
return DataBinding.IDL_FAULT;
}
@Override
public String getTargetDataBinding() {
return DataBinding.IDL_FAULT;
}
/**
* @param mediator the mediator to set
*/
@Reference
public void setMediator(Mediator mediator) {
this.mediator = mediator;
}
/**
* @see org.apache.tuscany.sca.databinding.impl.BaseTransformer#getSourceType()
*/
@Override
protected Class getSourceType() {
return Exception.class;
}
/**
* @see org.apache.tuscany.sca.databinding.impl.BaseTransformer#getTargetType()
*/
@Override
protected Class getTargetType() {
return Exception.class;
}
/**
* @see org.apache.tuscany.sca.databinding.Transformer#getWeight()
*/
@Override
public int getWeight() {
return 10000;
}
@SuppressWarnings("unchecked")
public Exception transform(Exception source, TransformationContext context) {
DataType<DataType> sourceType = context.getSourceDataType();
DataType<DataType> targetType = context.getTargetDataType();
ExceptionHandler exceptionHandler = getExceptionHandler(sourceType);
if (exceptionHandler == null) {
return source;
}
Object sourceFaultInfo = exceptionHandler.getFaultInfo(source);
Object targetFaultInfo =
mediator.mediate(sourceFaultInfo, sourceType.getLogical(), targetType.getLogical(), context.getMetadata());
ExceptionHandler targetHandler = getExceptionHandler(targetType);
if (targetHandler != null) {
Exception targetException =
targetHandler.createException(targetType, source.getMessage(), targetFaultInfo, source.getCause());
return targetException;
}
// FIXME
return source;
}
private ExceptionHandler getExceptionHandler(DataType<DataType> targetType) {
DataType targetFaultType = (DataType)targetType.getLogical();
DataBinding targetDataBinding =
mediator.getDataBindings().getDataBinding(targetFaultType.getDataBinding());
if (targetDataBinding == null) {
return null;
}
ExceptionHandler targetHandler = targetDataBinding.getExceptionHandler();
return targetHandler;
}
}
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