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From Grant Ingersoll <gsing...@apache.org>
Subject Re: BoostingNearQuery
Date Fri, 21 Aug 2009 12:27:16 GMT

On Aug 21, 2009, at 8:23 AM, Mark Miller wrote:

> Grant Ingersoll wrote:
>>
>> On Aug 20, 2009, at 3:44 PM, Mark Miller wrote:
>>
>>> And what is the purpose of the marker interface PayloadQuery?
>>>
>>> Is there a use case for this?
>>
>> At the time I was adding it, I was thinking about adding a Payload
>> query that took in other Payload queries, i.e. something like:
>> CoolNewQuery(PayloadQuery [] clauses), but then I found a different
>> way to do it.
>>
>> Still, it seems like there should be a way of, in certain cases,
>> distinguishing Payload queries from SpanQueries, and there currently
>> isn't.
>>
>> I'm fine with removing it until I have a more concrete reason for it.
>>
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> Thanks Grant - my though is just - well what can you do knowing its a
> Payload query? The interface defines no methods - so I just can't come
> up with a use case myself ... to do anything, you'd have to know the
> actual class of the Query anyway right?
>

Marker interfaces just give you a little bit of type safety.  We can  
remove it.  When the time comes, it will be more obvious as to what  
should be in a payload query and we can make the decision then.  I  
will remove it. 
  

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