Hey,
Matt: This isn't related to this thread, but I noticed you are from Scholar.ly.
I thought you might like this:
http://arxiv.org/abs/0905.1594
Go Canucks!,
Marko.
http://markorodriguez.com
On Dec 4, 2011, at 12:58 AM, Matt Luongo wrote:
> Well, I had already started writing this before I saw your response- so, if
> you do decide down the road that you care more about immediate performance
> than keeping DRY... ;)
>
> g.setMaxBufferSize(0) //turn on tx handlings
> g.startTransaction()
>
> found = g.idx('node_auto_index')[[name:'uni...@example.com']].count()
> if (found == 0) {
> //other custom create code could go here, and/or have vars passed
> through json
> results = g.addVertex([:])
> } else {
> results = g.idx('node_auto_index')[[name:'uni...@example.com
> ']].count().next()
> }
>
> g.stopTransaction(TransactionalGraph.Conclusion.SUCCESS)
> g.setMaxBufferSize(1)
>
> results
>
> would be something like the Groovy you'd use.
>
> I don't blame you for wanting to avoid the many choices available right now
> - I'm already generating Javascript for traversal pruning and templating
> Gremlin, all in the name of performance...
>
> --
> Matt Luongo
> Co-Founder, Scholr.ly
>
>
>
> On Sun, Dec 4, 2011 at 2:38 AM, dnagir <dna...@gmail.com> wrote:
>
>> Thanks Matt.
>>
>> Yeah. I think the transaction API is in making. Would be great addition.
>>
>> The server-side plugin will definitely work, but I personally prefer to
>> use one way of doing things. At least until I will start speaking neo4j
>> natively :)
>>
>> Cheers,
>> Dmytrii
>> http://www.ApproachE.com
>>
>>
>> On 04/12/2011, at 6:35 PM, mhluongo [via Neo4j Community Discussions]
>> wrote:
>>
>>> I've run into this problem, and resorted to using the Gremlin/Groovy over
>>> REST (via the server-included plugin).
>>>
>>> There really isn't a way to transactionally express a conditional (or
>>> get-or-create) like that over the vanilla REST API, though I'm sure it's
>> in
>>> the works.
>>>
>>> --
>>> Matt Luongo
>>> Co-Founder, Scholr.ly
>>>
>>>
>>>
>>> On Thu, Dec 1, 2011 at 5:45 PM, dnagir <[hidden email]> wrote:
>>>
>>>> Hi,
>>>>
>>>> I wonder what's the best way to do something similar to unique
>> constraints
>>>> in RDBMS.
>>>>
>>>> For example, user registration requires that the user's email to be
>> unique.
>>>>
>>>> Working over in Ruby over REST API, how do you achieve this?
>>>>
>>>> I assume I need an auto-index on email property of User nodes. Then
>> query
>>>> it
>>>> to check the property.
>>>>
>>>> But how can I make it transactional? So that I am sure that between
>>>> querying
>>>> and inserting the node, no similar has been inserted.
>>>>
>>>> The transactional part better applies to reservation instead of user
>>>> creation. But you get the point.
>>>>
>>>> Cheers.
>>>>
>>>> --
>>>> View this message in context:
>>>>
>> http://neo4j-community-discussions.438527.n3.nabble.com/Unique-constraint-and-transaction-over-REST-tp3553148p3553148.html
>>>> Sent from the Neo4j Community Discussions mailing list archive at
>>>> Nabble.com.
>>>> _______________________________________________
>>>> Neo4j mailing list
>>>> [hidden email]
>>>> https://lists.neo4j.org/mailman/listinfo/user
>>>>
>>> _______________________________________________
>>> Neo4j mailing list
>>> [hidden email]
>>> https://lists.neo4j.org/mailman/listinfo/user
>>>
>>>
>>> If you reply to this email, your message will be added to the discussion
>> below:
>>>
>> http://neo4j-community-discussions.438527.n3.nabble.com/Unique-constraint-and-transaction-over-REST-tp3553148p3558628.html
>>> To unsubscribe from Unique constraint and transaction over REST, click
>> here.
>>> NAML
>>
>>
>>
>> --
>> View this message in context:
>> http://neo4j-community-discussions.438527.n3.nabble.com/Unique-constraint-and-transaction-over-REST-tp3553148p3558630.html
>> Sent from the Neo4j Community Discussions mailing list archive at
>> Nabble.com.
>> _______________________________________________
>> Neo4j mailing list
>> User@lists.neo4j.org
>> https://lists.neo4j.org/mailman/listinfo/user
>>
> _______________________________________________
> Neo4j mailing list
> User@lists.neo4j.org
> https://lists.neo4j.org/mailman/listinfo/user
_______________________________________________
Neo4j mailing list
User@lists.neo4j.org
https://lists.neo4j.org/mailman/listinfo/user
