Support ParameterizedType Injection

[GoogleCodeExporter]

I want to use ParameterizedType injection. But google-gin erase type 
parameters. IMO ParameterizedType injection and Generator make simple 
programing model.

Example:

Get Person's validator from Gininjector.
-----------------------------
 Injector
-----------------------------
@GinModules(PersonModule.class)
public interface PersonsInjector extends Ginjector{
    // get the person's validator
    IValidator<Person> validator();
}
-----------------------------
I'd tried to implement ValidatorGenerator to active this code. But 
Generator erase type parameters from type name.

--------------------------
 validator.gwt.xml
--------------------------
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE module PUBLIC "-//Google Inc.//DTD Google Web Toolkit 2.0.3//EN" 
"http://google-web-toolkit.googlecode.com/svn/tags/2.0.3/distro-
source/core/src/gwt-module.dtd">
<module>
    <source path="client" />
    <generate-with class="validator.rebind.ValidatorGenerator">
        <when-type-assignable
    class="com.google.gwt.validation.client.interfaces.IValidator" />
    </generate-with>
</module>

--------------------------
ValidatorGenerator
--------------------------
public class ValidatorGenerator extends Generator {

    @Override
    public String generate(TreeLogger logger, GeneratorContext context,
            String typeName) throws UnableToCompleteException {

          // erased type parameters from type name.
          assert 
"com.google.gwt.validation.client.interfaces.IValidator".equals(typeName);
          .....
    }
}

-----------------------------

Linkage:
 http://code.google.com/p/google-web-toolkit/issues/detail?id=4897

Original issue reported on code.google.com by takeshi....@gmail.com on 1 May 2010 at 5:16

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

I've created a patch.

http://codereview.appspot.com/1049041/show

Original comment by takeshi....@gmail.com on 1 May 2010 at 6:45

[GoogleCodeExporter]

Adding type parameters (and other kinds of useful information) to GWT.create is 
an often requested feature for GWT and one that Gin could certainly take 
advantage of. No idea if/when this finds its way into GWT though so I'll mark 
it as wont fix until the original issue is resolved. Feel free to request 
reopening of this bug once a change has been made to GWT.

Original comment by aragos on 7 Jul 2010 at 3:32

• Changed state: WontFix
• Added labels: Priority-Low, Type-Enhancement
• Removed labels: Priority-Medium, Type-Defect