[seam-issues] [JBoss JIRA] Commented: (SOLDER-110) @DefaultBean does not work on generic types

[George Gastaldi (JIRA)]

    [ https://issues.jboss.org/browse/SOLDER-110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12609548#comment-12609548 ] 

George Gastaldi commented on SOLDER-110:
----------------------------------------

Here is a snippet to get the actual type arguments from a class:

{code:java}
private Type[] getConverterTypeGenerics(Class<?> clazz) {
     Type[] genericInterfaces = clazz.getGenericInterfaces();
     for (Type type : genericInterfaces) {
         if (type instanceof ParameterizedType) {
             return ((ParameterizedType) type).getActualTypeArguments();
         }
     }
     return null;
}
{code}

> @DefaultBean does not work on generic types
> -------------------------------------------
>
>                 Key: SOLDER-110
>                 URL: https://issues.jboss.org/browse/SOLDER-110
>             Project: Seam Solder
>          Issue Type: Bug
>    Affects Versions: 3.0.0.Final
>            Reporter: George Gastaldi
>
> DefaultBean should work on generic types also, check the example below:
> {code:java}
> public interface Converter<S, T> {
> 	T convert(S source);
> }
> @DefaultBean(Converter.class)
> public class DozerConverter implements Converter<Object, Object> {
>     @Inject
>     public DozerConverter(InjectionPoint ip) {
>     }
>     @Override
>     public Object convert(Object source) {
>     }
> }
> public class ConverterTest {
>     
>     @Inject
>     private Converter<String, Integer> converter;
>     
>     ...   
> }
> {code}
> When running the test, it fails with a org.jboss.weld.exceptions.DeploymentException: WELD-001408 Unsatisfied dependencies for type [Converter<String, Integer>] with qualifiers [@Default] at injection point [[field] @Inject private org.jboss.seam.solder.test.converter.ConverterTest.converter], since the generic types are different (but possible, since the default bean it´s supposed to handle object to object conversion).

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