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package com.sun.xml.ws.spi.db;
import java.lang.reflect.Array;
import java.lang.reflect.Field;
import java.lang.reflect.GenericArrayType;
import java.lang.reflect.Method;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlElementRef;
import javax.xml.bind.annotation.XmlElementWrapper;
import javax.xml.namespace.QName;
/**
* JAXBWrapperAccessor
*
* @author shih-chang.chen@oracle.com
*/
@SuppressWarnings({ "unchecked", "rawtypes" })
public class JAXBWrapperAccessor extends WrapperAccessor {
protected Class<?> contentClass;
protected HashMap<Object, Class> elementDeclaredTypes;
public JAXBWrapperAccessor(Class<?> wrapperBean) {
contentClass = (Class<?>) wrapperBean;
HashMap<Object, PropertySetter> setByQName = new HashMap<Object, PropertySetter>();
HashMap<Object, PropertySetter> setByLocalpart = new HashMap<Object, PropertySetter>();
HashMap<String, Method> publicSetters = new HashMap<String, Method>();
HashMap<Object, PropertyGetter> getByQName = new HashMap<Object, PropertyGetter>();
HashMap<Object, PropertyGetter> getByLocalpart = new HashMap<Object, PropertyGetter>();
HashMap<String, Method> publicGetters = new HashMap<String, Method>();
HashMap<Object, Class> elementDeclaredTypesByQName = new HashMap<Object, Class>();
HashMap<Object, Class> elementDeclaredTypesByLocalpart = new HashMap<Object, Class>();
for (Method method : contentClass.getMethods()) {
if (PropertySetterBase.setterPattern(method)) {
String key = method.getName()
.substring(3, method.getName().length()).toLowerCase();
publicSetters.put(key, method);
}
if (PropertyGetterBase.getterPattern(method)) {
String methodName = method.getName();
String key = methodName.startsWith("is") ? methodName
.substring(2, method.getName().length()).toLowerCase()
: methodName.substring(3, method.getName().length())
.toLowerCase();
publicGetters.put(key, method);
}
}
HashSet<String> elementLocalNames = new HashSet<String>();
for (Field field : getAllFields(contentClass)) {
XmlElementWrapper xmlElemWrapper = field.getAnnotation(XmlElementWrapper.class);
XmlElement xmlElem = field.getAnnotation(XmlElement.class);
XmlElementRef xmlElemRef = field.getAnnotation(XmlElementRef.class);
String fieldName = field.getName().toLowerCase();
String namespace = "";
String localName = field.getName();
if (xmlElemWrapper != null) {
namespace = xmlElemWrapper.namespace();
if (xmlElemWrapper.name() != null && !xmlElemWrapper.name().equals("")
&& !xmlElemWrapper.name().equals("##default")) {
localName = xmlElemWrapper.name();
}
}else if (xmlElem != null) {
namespace = xmlElem.namespace();
if (xmlElem.name() != null && !xmlElem.name().equals("")
&& !xmlElem.name().equals("##default")) {
localName = xmlElem.name();
}
} else if (xmlElemRef != null) {
namespace = xmlElemRef.namespace();
if (xmlElemRef.name() != null && !xmlElemRef.name().equals("")
&& !xmlElemRef.name().equals("##default")) {
localName = xmlElemRef.name();
}
}
if (elementLocalNames.contains(localName)) {
this.elementLocalNameCollision = true;
} else {
elementLocalNames.add(localName);
}
QName qname = new QName(namespace, localName);
if (field.getType().equals(JAXBElement.class)) {
if (field.getGenericType() instanceof ParameterizedType) {
Type arg = ((ParameterizedType) field.getGenericType())
.getActualTypeArguments()[0];
if (arg instanceof Class) {
elementDeclaredTypesByQName.put(qname, (Class) arg);
elementDeclaredTypesByLocalpart.put(localName,
(Class) arg);
} else if (arg instanceof GenericArrayType) {
Type componentType = ((GenericArrayType) arg)
.getGenericComponentType();
if (componentType instanceof Class) {
Class arrayClass = Array.newInstance(
(Class) componentType, 0).getClass();
elementDeclaredTypesByQName.put(qname, arrayClass);
elementDeclaredTypesByLocalpart.put(localName,
arrayClass);
}
}
}
}
// _return
if (fieldName.startsWith("_") && !localName.startsWith("_")) {
fieldName = fieldName.substring(1);
}
Method setMethod = publicSetters.get(fieldName);
Method getMethod = publicGetters.get(fieldName);
PropertySetter setter = createPropertySetter(field, setMethod);
PropertyGetter getter = createPropertyGetter(field, getMethod);
setByQName.put(qname, setter);
setByLocalpart.put(localName, setter);
getByQName.put(qname, getter);
getByLocalpart.put(localName, getter);
}
if (this.elementLocalNameCollision) {
this.propertySetters = setByQName;
this.propertyGetters = getByQName;
elementDeclaredTypes = elementDeclaredTypesByQName;
} else {
this.propertySetters = setByLocalpart;
this.propertyGetters = getByLocalpart;
elementDeclaredTypes = elementDeclaredTypesByLocalpart;
}
}
static protected List<Field> getAllFields(Class<?> clz) {
List<Field> list = new ArrayList<Field>();
while (!Object.class.equals(clz)) {
list.addAll(Arrays.asList(getDeclaredFields(clz)));
clz = clz.getSuperclass();
}
return list;
}
static protected Field[] getDeclaredFields(final Class<?> clz) {
try {
return (System.getSecurityManager() == null) ? clz .getDeclaredFields() :
AccessController.doPrivileged(new PrivilegedExceptionAction<Field[]>() {
@Override
public Field[] run() throws IllegalAccessException {
return clz.getDeclaredFields();
}
});
} catch (PrivilegedActionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return null;
}
}
static protected PropertyGetter createPropertyGetter(Field field, Method getMethod) {
if (!field.isAccessible()) {
if (getMethod != null) {
MethodGetter methodGetter = new MethodGetter(getMethod);
if (methodGetter.getType().toString().equals(field.getType().toString())) {
return methodGetter;
}
}
}
return new FieldGetter(field);
}
static protected PropertySetter createPropertySetter(Field field,
Method setter) {
if (!field.isAccessible()) {
if (setter != null) {
MethodSetter injection = new MethodSetter(setter);
if (injection.getType().toString().equals(field.getType().toString())) {
return injection;
}
}
}
return new FieldSetter(field);
}
private Class getElementDeclaredType(QName name) {
Object key = (this.elementLocalNameCollision) ? name : name
.getLocalPart();
return elementDeclaredTypes.get(key);
}
@Override
public PropertyAccessor getPropertyAccessor(String ns, String name) {
final QName n = new QName(ns, name);
final PropertySetter setter = getPropertySetter(n);
final PropertyGetter getter = getPropertyGetter(n);
final boolean isJAXBElement = setter.getType()
.equals(JAXBElement.class);
final boolean isListType = java.util.List.class.isAssignableFrom(setter
.getType());
final Class elementDeclaredType = isJAXBElement ? getElementDeclaredType(n)
: null;
return new PropertyAccessor() {
@Override
public Object get(Object bean) throws DatabindingException {
Object val;
if (isJAXBElement) {
JAXBElement<Object> jaxbElement = (JAXBElement<Object>) getter.get(bean);
val = (jaxbElement == null) ? null : jaxbElement.getValue();
} else {
val = getter.get(bean);
}
if (val == null && isListType) {
val = new java.util.ArrayList();
set(bean, val);
}
return val;
}
@Override
public void set(Object bean, Object value) throws DatabindingException {
if (isJAXBElement) {
JAXBElement<Object> jaxbElement = new JAXBElement<Object>(
n, elementDeclaredType, contentClass, value);
setter.set(bean, jaxbElement);
} else {
setter.set(bean, value);
}
}
};
}
}