[hibernate-dev] HV - Follow-Up: meta data API for method constraints
Hi,
I pretty much finished the implementation of the meta data API related to
method level constraints for Hibernate Validator (see
https://github.com/gunnarmorling/hibernate-validator/commits/HV-371). The
implementation conforms with what we currently discussed, but right now I'm
wondering whether exposing java.lang.reflect.Method on the API is actually a
good idea. I see two issues:
* Retrieving method objects via the reflection APIs is somewhat nasty, in
particular it requires to handle a checked NoSuchMethodException:
try {
Method bar = Foo.class.getDeclaredMethod( "bar", String.class );
}
catch(Exception e) {
throw new RuntimeException(e);
}
* The handling in inheritance hierarchies with overridden/implemented
methods can be confusing to users not overly familiar with the reflection
API. In particular there are different method objects for a base method and
its implementation/overriding methods. This can be irritating when invoking
MethodDescriptor#getMethod() for instance.
Therefore I would be interested in feedback on the following change:
public interface TypeDescriptor extends ElementDescriptor {
MethodDescriptor getConstraintsForMethod(String name, Class<?>...
parameterTypes);
//instead of MethodDescriptor getConstraintsForMethod(Method method);
...
}
public interface MethodDescriptor extends ElementDescriptor {
String getName();
List<Class<?>> parameterTypes();
//instead of Method getMethod()
...
}
WDYT?
Thanks, Gunnar