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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.cxf.aegis.type.encoded;
import javax.xml.namespace.QName;
import org.apache.cxf.aegis.Context;
import org.apache.cxf.aegis.DatabindingException;
import org.apache.cxf.aegis.type.Type;
import org.apache.cxf.aegis.type.basic.BeanType;
import org.apache.cxf.aegis.type.basic.BeanTypeInfo;
import org.apache.cxf.aegis.xml.MessageReader;
import org.apache.cxf.aegis.xml.MessageWriter;
/**
* StructType is a small extension of the BeanType which can properly read and write SOAP encoded structs. The
* modifications are:
*
*
Nested elements MUST be unqualified
*
Nested elements MAY contain a SOAP ref attribute instead of an inline value
*
Struct MAY contain a SOAP id attribute
*
*
* When writting, the class will always write the struct in the following canonical format:
*
*
Struct will contain a SOAP id
*
Nested structs will be written as SOAP references (with SoapRefType)
*
*/
public class StructType extends BeanType {
public StructType() {
}
public StructType(BeanTypeInfo info) {
super(info);
}
/**
* Gets the BeanTypeInfo using an unqualified name.
* @param name the unqualified name of the element
* @return the BeanTypeInfo containing a property with the specified unqualified name
*/
@Override
protected BeanTypeInfo getBeanTypeInfoWithProperty(QName name) {
// nested elements use unqualified names
name = qualifyName(name);
return super.getBeanTypeInfoWithProperty(name);
}
/**
* Returns a SoapRefType wrapping the actual type.
*/
@Override
protected Type getElementType(QName name,
BeanTypeInfo beanTypeInfo,
MessageReader reader,
Context context) {
// nested elements use unqualified names
name = qualifyName(name);
Type type = super.getElementType(name, beanTypeInfo, reader, context);
if (type != null) {
type = new SoapRefType(type);
}
return type;
}
/**
* Adds special handeling for SoapRefs
*/
@Override
protected void writeProperty(QName name,
Object object,
Object property,
Class impl,
BeanTypeInfo inf) throws DatabindingException {
// nested elements use unqualified names
name = qualifyName(name);
if (property instanceof SoapRef) {
SoapRef soapRef = (SoapRef) property;
// register an action with the ref that will set the bean property
// if the reference has already been resolved the action will be
// invoked immedately
soapRef.setAction(new WritePropertyAction(name, object, impl, inf));
} else {
// normal property
super.writeProperty(name, object, property, impl, inf);
}
}
/**
* Writes a nested element with an unqualified name.
*/
@Override
protected void writeElement(QName name, Object value, Type type, MessageWriter writer, Context context) {
// Nested elements are unqualified
name = new QName("", name.getLocalPart());
MessageWriter cwriter = writer.getElementWriter(name);
if (type instanceof BeanType || type instanceof SoapArrayType) {
String refId = MarshalRegistry.get(context).getInstanceId(value);
SoapEncodingUtil.writeRef(cwriter, refId);
} else {
type.writeObject(value, cwriter, context);
}
cwriter.close();
}
/**
* Gets the qualified name of a nested element. Soap encoded structs contain unqualified elements so
* the method searches for a property matching the local part of the unqualified name.
*/
private QName qualifyName(QName name) {
// is the name already qualified, we're done
if (!"".equals(name.getNamespaceURI())) {
return name;
}
// find the matching property and get it's name
for (BeanType sooper = this; sooper != null; sooper = superBeanType(sooper)) {
QName qualifiedName = new QName(sooper.getTypeInfo().getDefaultNamespace(), name.getLocalPart());
if (sooper.getTypeInfo().getType(qualifiedName) != null) {
return qualifiedName;
}
}
return name;
}
private BeanType superBeanType(Type t) {
if (t instanceof BeanType) {
BeanType bt = (BeanType)t;
Type supertype = bt.getSuperType();
if (supertype instanceof BeanType) {
return (BeanType)supertype;
}
}
return null;
}
/**
* When the SoapRef is resolved write the matching property on the target object.
*/
private final class WritePropertyAction implements SoapRef.Action {
private final QName name;
private final Object targetObject;
private final Class targetClass;
private final BeanTypeInfo beanTypeInfo;
private WritePropertyAction(QName name,
Object targetObject,
Class targetClass,
BeanTypeInfo beanTypeInfo) {
this.name = name;
this.targetObject = targetObject;
this.targetClass = targetClass;
this.beanTypeInfo = beanTypeInfo;
}
public void onSet(SoapRef ref) {
writeProperty(name, targetObject, ref.get(), targetClass, beanTypeInfo);
}
}
}