Hi Robby, Oleg,
First of all, doc("$indexes") is not internal. It's one of the documented
and officially supported meta-documents.
Then, it doesn't return keys set (that's what Robby asked, am I right?)
AFAIR.
Finally, it should be really easy to implement index-keys("index-name")
function if we don't have one right now. Oleg, please check that we 100%
don't have such function already.
Ivan Shcheklein,
Sedna Team
On Mon, Jan 14, 2013 at 1:22 PM, Олег Борисенко <[email protected]> wrote:
> Hello! It's very simple to do. Sedna has special internal command that
> shows all the information about indexes without scanning them.
>
> For example:
>
> test> *create index "testind" on
> doc("test")/mediawiki/namespaces/namespace by @key as xs:string &*
>
> UPDATE is executed successfully
>
> test> *doc("$indexes") &*
>
>
>
> <indexes>
> <index name="testind" backend="btree" as_type="xs:string"
> on_path="child::element(mediawiki)/child::element(namespaces)/child::element(namespace)"
> by_path="attribute::attribute(key)" object_name="test"
> object_type="document"/>
> </indexes>
>
>
> Best regards, Borisenko Oleg, Sedna team.
>
>
> On Mon, Jan 7, 2013 at 6:17 PM, Robby Pelssers <[email protected]>wrote:
>
>> Hi all,
>>
>> I was wondering if Sedna also has some functionality available to just
>> read all keys from an index. So far I could only find the index-scan() in
>> the docs which I already heavily use but this time I only want a set of
>> keys.
>>
>> My use case is that I have indexes per collection for all logical
>> document indentifiers. Ideally I'd want to use the index to retrieve the
>> list of those identifiers by only using the index. As Sedna has this info
>> stored (in my context), it would be great to get hold of it.
>>
>> So is it possible in some way?
>>
>> Robby
>>
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