+1, we could really use that. Client-side sorting sucks.

--
Matt Luongo
Co-Founder, Scholr.ly



On Wed, Aug 24, 2011 at 4:43 PM, Aseem Kishore <aseem.kish...@gmail.com>wrote:

> I've just spent a bunch of time reading into how one can control the
> ordering of a traverse beyond simple "breadth first" or "depth first". More
> precisely, even when breadth first, how one can control *which* neighbors
> are traversed first.
>
> (It matters less in which order they're traversed vs. which order they're
> returned if you're returning all results, since you can just sort on the
> client. But it matters a lot if you want to use the paged traverser, since
> you're then only returning the first results.)
>
> I've learned that this is doable from Java by writing your own
> BranchSelector implementation:
>
> http://components.neo4j.org/neo4j/1.4.1/apidocs/
>
> I've found the built-in implementations, e.g. the pre-order breadth-first
> and depth-first:
>
>
> https://github.com/neo4j/community/blob/master/kernel/src/main/java/org/neo4j/kernel/PreorderBreadthFirstSelector.java
>
>
> https://github.com/neo4j/community/blob/master/kernel/src/main/java/org/neo4j/kernel/PreorderDepthFirstSelector.java
>
> To achieve a custom "best first", Igor Dovgiy for example shared that he
> modeled his implementation of the breadth-first selector, except just using
> a PriorityQueue instead of a regular Queue.
>
> My question is: is there any way to specify this sort of thing over the
> REST
> API instead of having to write a plugin? If not, does that sound like a
> reasonable feature request?
>
> I really just want something simple: nodes ordered by some "timestamp"
> property. It's killing us that we can't do this today. We might just have
> to
> look into writing this as a plugin...
>
> Thanks!
>
> Aseem
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