-boun...@developer.marklogic.com
<mailto:general-boun...@developer.marklogic.com>
[general-boun...@developer.marklogic.com
<mailto:general-boun...@developer.marklogic.com> ] on behalf of Ron Hitchens
[r...@ronsoft.com <mailto:r...@ronsoft.com> ]
Sent: 04 June 2014 19:31
To: MarkLog
chens
Verzonden: donderdag 5 juni 2014 00:19
Aan: MarkLogic Developer Discussion
Onderwerp: Re: [MarkLogic Dev General] New Feature Request: Unique Value
Range Indexes
Unless your unique-uri() function is running in a non-update query, in
which case it runs lock free at a timestamp. If you'
ock and the other would fail and retry.
>>>> Maybe I'm missing something though.
>>>>
>>>> But anyway, I agree unique indexes would be a handy feature. e.g. our docs
>>>> have a DOI element which *should* be unique but occasionally aren't, w
oun...@developer.marklogic.com] on behalf of Ron Hitchens
> [r...@ronsoft.com]
> Sent: 04 June 2014 19:31
> To: MarkLogic Developer Discussion
> Subject: Re: [MarkLogic Dev General] New Feature Request: Unique Value Range
> Indexes
>
> Rob,
>
> I believe there is
gic.com
[general-boun...@developer.marklogic.com] on behalf of Ron Hitchens
[r...@ronsoft.com]
Sent: 04 June 2014 19:31
To: MarkLogic Developer Discussion
Subject: Re: [MarkLogic Dev General] New Feature Request: Unique Value Range
Indexes
Rob,
I believe there is a race condition here.
ich *should* be unique but occasionally aren't, would
>> be nice to enforce that rather than have to code defensively.
>>
>> Rob
>> ________________________
>> From: general-boun...@developer.marklogic.com
>> [general-boun...@developer.marklogic.com] on beha
l-boun...@developer.marklogic.com>]
On Behalf Of Whitby, Rob
Sent: woensdag 4 juni 2014 19:59
To: MarkLogic Developer Discussion
Subject: Re: [MarkLogic Dev General] New Feature Request: Unique Value Range
Indexes
How about something like this?
declare function unique-uri() {
let $uri := &quo
zethat.nl
> L: http://nl.linkedin.com/in/brinkjohanvanden
>
> -Original Message-
> From: general-boun...@developer.marklogic.com [mailto:
> general-boun...@developer.marklogic.com] On Behalf Of Whitby, Rob
> Sent: woensdag 4 juni 2014 19:59
> To: MarkLogic Developer Discu
r Discussion
Subject: [MarkLogic Dev General] New Feature Request: Unique Value Range
Indexes
I'm working on a project, one aspect of which requires minting unique IDs
and assuring that no two documents with the same ID wind up in the database. I
know how to accomplish this using locks
arklogic.com
[general-boun...@developer.marklogic.com] on behalf of Ron Hitchens
[r...@ronsoft.com]
Sent: 04 June 2014 19:31
To: MarkLogic Developer Discussion
Subject: Re: [MarkLogic Dev General] New Feature Request: Unique Value Range
Indexes
Rob,
I believe there is a race condition here. A
June 2014 19:31
To: MarkLogic Developer Discussion
Subject: Re: [MarkLogic Dev General] New Feature Request: Unique Value Range
Indexes
Rob,
I believe there is a race condition here. A document may not exit as-of the
timestamp when this request starts running, but some other request co
John,
What I'm interested in is not so much a strategy for generating unique IDs
but rather imposing a constraint on the content in the database. Yes, there
are ways of creating IDs that are very unlikely to clash, but that's not really
the crux of the new feature I'm suggesting.
I wan
On 04/06/2014 19:31, Ron Hitchens wrote:
> In my case, the naming space is actually quite small because I want the
> IDs to be meaningful but unique. For example "images:cats:fluffy:XX.png",
> where XX can increment or be set randomly until the ID is unique.
Make XX a random number. Or two
Maybe you could consider using sem:uuid() in MarkLogic 7? You are much
better off with a statistically unique ID than actually taking the time
and massive concurrency reduction to check uniqueness.
John
On 04/06/2014 18:01, Ron Hitchens wrote:
>
> I'm working on a project, one aspect of whi
logic.com] on behalf of Ron Hitchens
> [r...@ronsoft.com]
> Sent: 04 June 2014 18:01
> To: MarkLogic Developer Discussion
> Subject: [MarkLogic Dev General] New Feature Request: Unique Value Range
> Indexes
>
> I'm working on a project, one aspect of which
not that easy?
Rob
From: general-boun...@developer.marklogic.com
[general-boun...@developer.marklogic.com] on behalf of Ron Hitchens
[r...@ronsoft.com]
Sent: 04 June 2014 18:01
To: MarkLogic Developer Discussion
Subject: [MarkLogic Dev General] New Feature Request
I'm working on a project, one aspect of which requires minting unique IDs
and assuring that no two documents with the same ID wind up in the database. I
know how to accomplish this using locks (I'm pretty sure) but any such
implementation is awkward and prone to subtle edge case errors, and
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