[Xapian-devel] Initial patch for ExternalPostList

[Alexander Lind]

Pardon my ignorance, but can you explain a little of what one can do
with your addition here?  I mean what kind of functionality does it add
to Xapian?
I have read your posts about it, but don't feel like I've wrapped my
head around it entirely :-)

Alec

Rusty Conover wrote:
> Hi Everybody,
>
> Here is the first version of my match for an ExternalPostList, it
> should apply cleanly to 0.9.5 and 0.9.6.
>
> You can use it by first implementing an ExternalPostingSource, then
> creating a new Query object passing a reference an instance of
> your implementation to the constructor, see query.h. The
> ExternalPostingSource implementation is reference counted, so when its
> no longer needed it can clean itself up.
>
> It works well for filtering results but it has a problem that once it
> filters all of the results are returned with 100% relevancy. I'm not
> quite sure how to fix that but I think its because I just used the
> default weight implementations in matcher/externalsourcepostlist.h. 
> Any hints or patches to fix that so it works correctly would be
> greatly appreciated.  
>
> Also the use of an ExternalPostList query breaks the network method of
> transmitting queries, I haven't written code to serialize the post
> list or even decide if that's worth doing.
>
> I realize there has been some stylistic license taken with the
> formatting of this patch. I didn't pay much attention to following
> existing indentation and bracket rules and what not.  If you're up for
> including this into the release branch, I'd be glad to take the time
> and clean it up even further.
>
> Thanks for all of your help,
>
> Rusty
> --
> Rusty Conover
> InfoGears Inc.
> Web: http://www.infogears.com
>
>
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