Java generics are a compile-time feature only. The compiler uses your
extra information (parameterized types) in order to detect some errors
and eliminate the drudgery of some casting for you. However, when you
run the JVM it has no knowledge of generics. Therefore, if you have an
instance of List<User> it will just be "List" when it actually gets used.
In this context, I do not believe that struts needs to know anything
more than type="java.util.List" for it to work.
Cheers,
Mike
------------------------------------------------------------------------
Michael Taylor
TXE Systems, Inc.
[EMAIL PROTECTED]
Laurie Harper wrote:
I'd say it depends on how Struts processes the form bean declaration.
Assuming it's using straight reflection, I don't see why generics
wouldn't work.
However, Kent, you will need to correct your XML: the error you're
seeing is becuase what you have can't be parsed (it's not well
formed). Give this a try and see if it works:
<form-property name="users"
type="java.util.ArrayList<testpackage.User>"/>
L.
Nitesh Naveen wrote:
Generics is a Java 5.0 feature...
Don't think the features with 5.0 are introduced to Struts framework
yet!
Thanks & Regards,
Nitesh
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_____________________________
-----Original Message-----
From: Kent Boogaart [mailto:[EMAIL PROTECTED] Sent: Wednesday,
July 06, 2005 1:11 PM
To: user@struts.apache.org
Subject: Struts and Generics
Hi there,
I'm wondering whether it's possible to use generics with struts.
Something
like:
<form-bean name="test"
type="org.apache.struts.validator.DynaValidatorForm">
<form-property name="users"
type="java.util.ArrayList<testpackage.User>"/>
</form-bean>
I tried doing this (with my class names of course) and I get this
exception
on startup:
javax.servlet.ServletException: Can't get definitions factory from
context.
Thanks,
Kent
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