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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.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.core.UtilityExtensionPoint;
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.BaseTransformer;
import org.apache.tuscany.sca.interfacedef.DataType;
import org.apache.tuscany.sca.interfacedef.FaultExceptionMapper;
import static org.apache.tuscany.sca.interfacedef.Operation.IDL_FAULT;
/**
* This is a special transformer to transform the exception from one IDL to the
* other one
*
* @version $Rev$ $Date$
*/
public class Exception2ExceptionTransformer extends BaseTransformer<Throwable, Throwable> implements
PullTransformer<Throwable, Throwable> {
protected Mediator mediator;
protected FaultExceptionMapper faultExceptionMapper;
public Exception2ExceptionTransformer(ExtensionPointRegistry registry) {
super();
UtilityExtensionPoint utilityExtensionPoint = registry.getExtensionPoint(UtilityExtensionPoint.class);
this.mediator = utilityExtensionPoint.getUtility(Mediator.class);
this.faultExceptionMapper = utilityExtensionPoint.getUtility(FaultExceptionMapper.class);
}
protected Exception2ExceptionTransformer(Mediator mediator, FaultExceptionMapper faultExceptionMapper) {
super();
this.mediator = mediator;
this.faultExceptionMapper = faultExceptionMapper;
}
@Override
public String getSourceDataBinding() {
return IDL_FAULT;
}
@Override
public String getTargetDataBinding() {
return IDL_FAULT;
}
/**
* @see org.apache.tuscany.sca.databinding.BaseTransformer#getSourceType()
*/
@Override
protected Class<Throwable> getSourceType() {
return Throwable.class;
}
/**
* @see org.apache.tuscany.sca.databinding.BaseTransformer#getTargetType()
*/
@Override
protected Class<Throwable> getTargetType() {
return Throwable.class;
}
/**
* @see org.apache.tuscany.sca.databinding.Transformer#getWeight()
*/
@Override
public int getWeight() {
return 10000;
}
@SuppressWarnings("unchecked")
public Throwable transform(Throwable source, TransformationContext context) {
DataType<DataType> sourceType = context.getSourceDataType();
DataType<DataType> targetType = context.getTargetDataType();
Object sourceFaultInfo = faultExceptionMapper.getFaultInfo(source, sourceType.getLogical().getPhysical(), context.getSourceOperation());
Object targetFaultInfo =
mediator.mediate(sourceFaultInfo, sourceType.getLogical(), targetType.getLogical(), context.getMetadata());
Throwable targetException =
faultExceptionMapper.wrapFaultInfo(targetType, source.getMessage(), targetFaultInfo, source.getCause(), context.getTargetOperation());
// FIXME
return targetException == null ? source : targetException;
}
public void setFaultExceptionMapper(FaultExceptionMapper faultExceptionMapper) {
this.faultExceptionMapper = faultExceptionMapper;
}
}
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