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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.jaxb;
import java.lang.reflect.Method;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.tuscany.sca.databinding.TransformationException;
import org.apache.tuscany.sca.databinding.WrapperHandler;
import org.apache.tuscany.sca.interfacedef.DataType;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.interfacedef.util.ElementInfo;
import org.apache.tuscany.sca.interfacedef.util.WrapperInfo;
/**
* JAXB WrapperHandler implementation
*
* @version $Rev$ $Date$
*/
public class JAXBWrapperHandler implements WrapperHandler<Object> {
private JAXBWrapperHelper helper = new JAXBWrapperHelper();
public Object create(Operation operation, boolean input) {
WrapperInfo inputWrapperInfo = operation.getInputWrapper();
WrapperInfo outputWrapperInfo = operation.getOutputWrapper();
ElementInfo element = input ? inputWrapperInfo.getWrapperElement() : outputWrapperInfo.getWrapperElement();
final Class<?> wrapperClass = input ? inputWrapperInfo.getWrapperClass() : outputWrapperInfo.getWrapperClass();
try {
if (wrapperClass == null) {
return null;
}
return AccessController.doPrivileged(new PrivilegedExceptionAction<Object>() {
public Object run() throws Exception {
return wrapperClass.newInstance();
}
});
} catch (PrivilegedActionException e) {
throw new TransformationException(e);
}
}
public void setChildren(Object wrapper, Object[] childObjects, Operation operation, boolean input) {
WrapperInfo inputWrapperInfo = operation.getInputWrapper();
WrapperInfo outputWrapperInfo = operation.getOutputWrapper();
List<ElementInfo> childElements =
input ? inputWrapperInfo.getChildElements() : outputWrapperInfo.getChildElements();
List<String> childNames = new ArrayList<String>();
Map<String, Object> values = new HashMap<String, Object>();
for (int i = 0; i < childElements.size(); i++) {
ElementInfo e = childElements.get(i);
String name = e.getQName().getLocalPart();
childNames.add(name);
values.put(name, childObjects[i]);
}
// Get the property descriptor map
Map<String, JAXBPropertyDescriptor> pdMap = null;
try {
pdMap = XMLRootElementUtil.createPropertyDescriptorMap(wrapper.getClass());
} catch (Throwable t) {
throw new JAXBWrapperException(t);
}
helper.wrap(wrapper, childNames, values, pdMap);
}
public void setChild(Object wrapper, int i, ElementInfo childElement, Object value) {
Object wrapperValue = wrapper;
Class<?> wrapperClass = wrapperValue.getClass();
// FIXME: We probably should use the jaxb-reflection to handle the properties
try {
String prop = childElement.getQName().getLocalPart();
boolean collection = (value instanceof Collection);
Method getter = null;
for (Method m : wrapperClass.getMethods()) {
Class<?>[] paramTypes = m.getParameterTypes();
if (paramTypes.length == 1 && m.getName().equals("set" + capitalize(prop))) {
m.invoke(wrapperValue, new Object[] {value});
return;
}
if (collection && paramTypes.length == 0 && m.getName().equals("get" + capitalize(prop))) {
getter = m;
}
}
if (getter != null && Collection.class.isAssignableFrom(getter.getReturnType())) {
((Collection)getter.invoke(wrapperValue)).addAll((Collection)value);
}
} catch (Throwable e) {
throw new TransformationException(e);
}
}
private static String capitalize(String name) {
char first = Character.toUpperCase(name.charAt(0));
return first + name.substring(1);
}
/**
* @see org.apache.tuscany.sca.databinding.WrapperHandler#getChildren(java.lang.Object, Operation, boolean)
*/
public List getChildren(Object wrapper, Operation operation, boolean input) {
WrapperInfo inputWrapperInfo = operation.getInputWrapper();
WrapperInfo outputWrapperInfo = operation.getOutputWrapper();
List<ElementInfo> childElements = input? inputWrapperInfo.getChildElements():
outputWrapperInfo.getChildElements();
List<String> childNames = new ArrayList<String>();
for (ElementInfo e : childElements) {
childNames.add(e.getQName().getLocalPart());
}
return Arrays.asList(helper.unwrap(wrapper, childNames));
}
/**
* @see org.apache.tuscany.sca.databinding.WrapperHandler#getWrapperType(Operation, boolean)
*/
public DataType getWrapperType(Operation operation, boolean input) {
WrapperInfo inputWrapperInfo = operation.getInputWrapper();
WrapperInfo outputWrapperInfo = operation.getOutputWrapper();
DataType dt = input ? inputWrapperInfo.getWrapperType() : outputWrapperInfo.getWrapperType();
return dt;
}
/**
* @see org.apache.tuscany.sca.databinding.WrapperHandler#isInstance(java.lang.Object, Operation, boolean)
*/
public boolean isInstance(Object wrapper, Operation operation, boolean input) {
WrapperInfo inputWrapperInfo = operation.getInputWrapper();
WrapperInfo outputWrapperInfo = operation.getOutputWrapper();
Class<?> wrapperClass =
input ? inputWrapperInfo.getWrapperClass() : outputWrapperInfo.getWrapperClass();
return wrapperClass == null ? false : wrapperClass.isInstance(wrapper);
}
}
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