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From "Guillaume Nodet (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (ARIES-672) Erroneous "no type converter available to convert from type" exception for parameterized types
Date Wed, 25 Jul 2012 08:58:34 GMT

     [ https://issues.apache.org/jira/browse/ARIES-672?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Guillaume Nodet resolved ARIES-672.
-----------------------------------

    Resolution: Duplicate
      Assignee: Guillaume Nodet
    
> Erroneous "no type converter available to convert from type" exception for parameterized
types
> ----------------------------------------------------------------------------------------------
>
>                 Key: ARIES-672
>                 URL: https://issues.apache.org/jira/browse/ARIES-672
>             Project: Aries
>          Issue Type: Bug
>          Components: Blueprint
>    Affects Versions: 0.3
>            Reporter: Stephen Saucier
>            Assignee: Guillaume Nodet
>
> org.apache.aries.blueprint.container.AggregateConverter.convert(Object, ReifiedType)
throws an Exception when the ReifiedType has type parameters. The issue is in the "isAssignable"
function line 416 (of version 0.3) where there is a check that "target.size() == 0". This
condition can never be true for parameterized types, so it is assumed that the object is not
assignable.
> For example, consider the following
> public interface Foo<T> {
>     ...
> }
> public interface Bar {
>     ...
> }
> public class ExtendsFoo implements Foo<Bar> {
>     ...
> }
> public class Baz {
>     public void setFoo(Foo<Bar> foo) {
>         ...
>     }
> }
> wiring of an instance of ExtendsFoo to Baz fails with the exception message "no type
converter available to convert from type: ExtendsFoo to the required type: Foo<Bar>"

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