aries-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Guillaume Nodet (JIRA)" <>
Subject [jira] [Commented] (ARIES-1500) Conversion fails with generics
Date Thu, 03 Mar 2016 16:43:18 GMT


Guillaume Nodet commented on ARIES-1500:

See "Type Conversion", section 121.9.3 of the OSGi specs for available conversions.

To implement a converter, define a class implementing {{org.osgi.service.blueprint.container.Converter}}
and register it this way:
        <bean class="org.apache.aries.blueprint.pojos.ConverterA"/>

You'll find an example at

As for the factory returning a generic type, I know it should be possible to store the information
somewhere, but this would be very intrusive in the current code base I think.

> Conversion fails with generics
> ------------------------------
>                 Key: ARIES-1500
>                 URL:
>             Project: Aries
>          Issue Type: Bug
>          Components: Blueprint
>    Affects Versions: blueprint-core-1.5.0
>         Environment: All
>            Reporter: Jean-Philippe CLEMENT
> Let's take a bean with the method setSomething(Something<T>) called via blueprint
with another bean implementing Something => exception saying that bean conversion is not
possible. But, if I change the method signature without the generic type setSomething(Something),
then it works as expected.
> Blueprint should not care for the generic type as Java is type erasure and do not exceed
the spec.
> There is no nice work around. Have to change all APIs used via Blueprint and take note
for all deviations. This is really heavy.

This message was sent by Atlassian JIRA

View raw message