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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.databinding.sdo;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import javax.xml.namespace.QName;
import org.apache.tuscany.sca.databinding.ExceptionHandler;
import org.apache.tuscany.sca.interfacedef.DataType;
import org.apache.tuscany.sca.interfacedef.impl.DataTypeImpl;
import org.apache.tuscany.sca.interfacedef.util.XMLType;
import commonj.sdo.Type;
import commonj.sdo.helper.HelperContext;
import commonj.sdo.impl.HelperProvider;
/**
* SDO implementation of ExceptionHandler
*
* @version $Rev$ $Date$
*/
public class SDOExceptionHandler implements ExceptionHandler {
private static final Class[] EMPTY_CLASS_ARRAY = new Class[0];
// FIXME: Need a way to pass in the HelperContext
private HelperContext helperContext = HelperProvider.getDefaultContext();
/**
* <ul>
* <li>WrapperException(String message, FaultBean faultInfo) <br>
* A constructor where WrapperException is replaced with the name of the
* generated wrapper exception and FaultBean is replaced by the name of the
* generated fault bean.
* <li> WrapperException(String message, FaultBean faultInfo, Throwable
* cause) <br>
* A constructor whereWrapperException is replaced with the name of the
* generated wrapper exception and FaultBean is replaced by the name of the
* generated fault bean. The last argument, cause, may be used to convey
* protocol specific fault information
* </ul>
*/
public Exception createException(DataType<DataType> exceptionType, String message, Object faultInfo, Throwable cause) {
Class exceptionClass = exceptionType.getPhysical();
DataType<?> faultBeanType = exceptionType.getLogical();
Class faultBeanClass = faultBeanType.getPhysical();
try {
Constructor constructor =
exceptionClass.getConstructor(new Class[] {String.class, faultBeanClass, Throwable.class});
return (Exception)constructor.newInstance(new Object[] {message, faultInfo, cause});
} catch (Throwable e) {
throw new IllegalArgumentException(e);
}
}
public Object getFaultInfo(Exception exception) {
if (exception == null) {
return null;
}
try {
Method method = exception.getClass().getMethod("getFaultInfo", EMPTY_CLASS_ARRAY);
return method.invoke(exception, (Object[])null);
} catch (Throwable e) {
throw new IllegalArgumentException(e);
}
}
public DataType<?> getFaultType(DataType exceptionDataType) {
Class exceptionType = exceptionDataType.getPhysical();
Class faultBeanClass = null;
try {
Method method = exceptionType.getMethod("getFaultInfo", EMPTY_CLASS_ARRAY);
faultBeanClass = method.getReturnType();
} catch (NoSuchMethodException e) {
faultBeanClass = null;
}
if (faultBeanClass == null) {
return null;
}
QName faultElement = null;
try {
Field field = exceptionType.getField("FAULT_ELEMENT");
faultElement = (QName)field.get(null);
} catch (NoSuchFieldException e) {
// Fall back to type inspection
Type type = helperContext.getTypeHelper().getType(faultBeanClass);
if (type != null && !type.isDataType()) {
String ns = type.getURI();
String name = helperContext.getXSDHelper().getLocalName(type);
faultElement = new QName(ns, name);
}
} catch (Throwable e) {
// Ignore
}
if (faultElement == null) {
return null;
}
DataType<XMLType> faultType =
new DataTypeImpl<XMLType>(SDODataBinding.NAME, faultBeanClass, new XMLType(faultElement, null));
return faultType;
}
}
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