com.sun.xml.ws.spi.db.FieldGetter Maven / Gradle / Ivy
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package com.sun.xml.ws.spi.db;
import java.lang.reflect.Field;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
/**
* FieldGetter gets the value of a field from an instance.
*
* @author [email protected]
* @exclude
*/
public class FieldGetter extends PropertyGetterBase {
protected Field field;
public FieldGetter(Field f) {
field = f;
type = f.getType();
}
public Field getField() {
return field;
}
static class PrivilegedGetter implements PrivilegedExceptionAction {
private Object value;
private Field field;
private Object instance;
public PrivilegedGetter(Field field, Object instance) {
super();
this.field = field;
this.instance = instance;
}
public Object run() throws IllegalAccessException {
if (!field.isAccessible()) {
field.setAccessible(true);
}
value = field.get(instance);
return null;
}
}
public Object get(final Object instance) {
if (field.isAccessible()) {
try {
return field.get(instance);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} else {
PrivilegedGetter privilegedGetter = new PrivilegedGetter(field, instance);
try {
AccessController.doPrivileged(privilegedGetter);
} catch (PrivilegedActionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return privilegedGetter.value;
}
return null;
}
public A getAnnotation(Class annotationType) {
Class c = annotationType;
return (A) field.getAnnotation(c);
}
}