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From Alex Parvulescu <alex.parvule...@gmail.com>
Subject Re: Re (OAK-36) Implement a query parser - what about indexing?
Date Thu, 22 Mar 2012 11:39:07 GMT

On Thu, Mar 22, 2012 at 10:43 AM, Michael Dürig <mduerig@apache.org> wrote:

> On 21.3.12 23:13, Alex Parvulescu wrote:
>> Hi,
>> I've started to scratch the surface a little bit on the subject of
>> queries.
>> OAK-36 covers the Query implementation effort, but I'm wondering if now
>> would be a good time to mention indexing as well.
> We should create a separate JIRA issue for the query execution engine. See
> my last comment on OAK-28. I thought it would be too early for that
> yesterday but since there seems to be some effort already in this area I
> think we should go ahead.
Sorry for not being clear enough. I'm talking about indexing.
If you see the query result as a filtered output of the index, I'm looking
for a way to build the input side.
As far as I know you need some sort of observation events to know whenever
a node has been added/changed so you can keep the index up to date.

Am I making more sense now? :)


> Michael
>> We want to have dedicated indexes, I think that would be accomplished via
>> observation.
>> Any ideas about the availability of this feature?
>> The current index implementation just traverses the existing nodes (albeit
>> applying some path constraints first), but still it doesn't have (for a
>> lack of a better word) a local dedicated index.
>> This helps with testing the query parser&  friends, but a lucene based
>> query engine needs events to update its data.
>> thoughts?
>> best,
>> alex
>> [0] http://markmail.org/message/**vv​7mohr22uqdugah<http://markmail.org/message/vv7mohr22uqdugah>

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