How to get a Class literal from a generically specific Class
- by h2g2java
There are methods like these which require Class literals as argument.
Collection<EmpInfo> emps =
SomeSqlUtil.select(
EmpInfo.class,
"select * from emps");
or
GWT.create(Razmataz.class);
The problem presents itself when I need to supply generic specific classes like
EmpInfo<String>
Razmataz<Integer>
The following would be wrong syntax
Collection<EmpInfo<String>> emps =
SomeSqlUtil.select(
EmpInfo<String>.class,
"select * from emps");
or
GWT.create(Razmataz<Integer>.class);
Because you cannot do syntax like
Razmataz<Integer>.class
So, how would I be able to squeeze a class literal out of
EmpInfo<String>
Razmataz<Integer>
so that I could feed them as arguments to methods requiring Class literals?
Further info
Okay, I confess that I am asking this primarily for GWT.
I have a pair of GWT RPC interface Razmataz. (FYI, GWT RPC interface has to be defined in server-client pairs). I plan to use the same interface pair for communicating whether it be String, Integer, Boolean, etc.
GWT.create(Razmataz) for Razmataz<T>
complains that, since I did not specify T, GWT compiler treated it as Object. Then GWT compiler would not accept Object class. It needs to be more specific than being an Object.
So, it seems there is no way for me to tell GWT.create what T is because a Class literal is a runtime concept while generics is a compile time concept, Right?
