[ 
http://issues.apache.org/jira/browse/HIVEMIND-87?page=comments#action_12417457 
] 

Knut Wannheden commented on HIVEMIND-87:
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The initializer approach as described in the previous comment does 
unfortunately not work as the object translator is contributed as a (already 
initialized) service object. Other possible solutions would be:

1. let the client of the translator implement the required assignability logic
2. contribute the object translator as a translator factory service (3rd kind 
of translator contribution)
3. integrate the initializer as an optional parameter to the 
Translator#translate() method

Any other ideas or thoughts?

> object translator: optionally, specify interface
> ------------------------------------------------
>
>          Key: HIVEMIND-87
>          URL: http://issues.apache.org/jira/browse/HIVEMIND-87
>      Project: HiveMind
>         Type: New Feature

>   Components: framework
>     Reporter: Howard M. Lewis Ship

>
> It is very commonly the case when using the  object translator that the 
> object must be assignable to a particular interface (or extend a particular 
> class). In most cases, the value obtained will be injected into a property of 
> an object and a ClassCastException will occur that will (hopefully) identify 
> the invalid contribution.
> In some cases, the object may go into some form of untyped collection, 
> causing a class cast exception at a later point.
> It would be nice if the object translator could enforce an assignability 
> check directly, ie.
> <attribute name="object" translator="object:java.lang.Runnable"/>

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