Showing posts with label java reflection bean validation. Show all posts
Showing posts with label java reflection bean validation. Show all posts

Tuesday, April 14, 2009

Java Bean validation using reflection


public static boolean validateBeanFields(Object obj) {

if (obj == null)
return false;

Class objClass = obj.getClass();
Method[] methods = objClass.getMethods();
for (Method aMethod : methods) {
String methodName = aMethod.getName();
if (methodName.startsWith("get")) {
try {
Object retObj = aMethod.invoke(obj, null);

if (retObj == null)
return false;
else if (retObj instanceof Enum) // skip enum values
continue;
else if (retObj instanceof String) {
if (((String)retObj).length() == 0)
return false;
}
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
}
return true;
}