[hibernate-issues] [Hibernate-JIRA] Created: (HV-492) Validation of CGLIB enhanced Objects always return null
Validation of CGLIB enhanced Objects always return null
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Key: HV-492
URL: http://opensource.atlassian.com/projects/hibernate/browse/HV-492
Project: Hibernate Validator
Issue Type: Bug
Affects Versions: 4.2.0.Beta2, 4.1.0.Final
Environment: Hibernate Validator 4.1.0-final and 4.2.0-BETA2, cglib 2.2
Reporter: Christian Fehmer
A validation of a cglib enhanced object will always validate "null".
The validator (i tested it with an custom validator) always gets "null" as the
value in the isValid method. The cglib enhanced object has a field "selection"
and a getter/setter pair for this field. The hibernate validator uses the
org.hibernate.validator.util.ReflectionHelper to access the field selection directly. That
fails on a cglib enhanced object.
My workaround for now: I replaced the
org.hibernate.validator.util.ReflectionHelper.getValue method. When object is a cglib
enhanced object i invoke the getter method instead of accessing the field directly.
replaced method:
public static Object getValue(Member member, Object object) {
Object value = null;
if (member instanceof Method) {
...
} else if (member instanceof Field) {
// FIX: use getter method on cglib fields
if (object.getClass().getName().contains("$$")) {
String methodName = member.getName();
methodName = "get"+ String.valueOf(methodName.charAt(0)).toUpperCase()+
methodName.substring(1);
try {
Method method = member.getDeclaringClass().getMethod(
methodName);
method.setAccessible(true);
value = method.invoke(object);
} catch (Exception e) {
throw new ValidationException("Unable to access "
+ methodName, e);
}
} else {
...
}
}
return value;
}
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