[Titan backend] Access to an existing one ?

[Bruno Thiao-Layel <br...@gmail.com>]

Hi there,

First of all, thank you for provinding so many backends solutions to
Marmotta.
This is a really great feature.

I'm currently using Marmotta with a Kiwi/postgresql backend for the past
year, and I have no problem so far.
But now, I would like to scale my needs through an existing Titan database
and use its full-text support with Elasticsearch.
My question is : is it possible to use an existing Titan database as a
backend for Marmotta ?
Or maybe, how to use Elasticsearch with the embedded Marmotta's Titan if
possible ?

Regards,
Bruno

Re: [Titan backend] Access to an existing one ?

[Bruno Thiao-Layel <br...@gmail.com>]

Sorry for the very late reply.. my bad.

Thanks for the info about Tinkerpop's Sail support.
Does anyone have some technical documentation or leads about how to build a
Sesame Sail? I would definitely do my own if Elasticsearch is well
supported !

Thanks again,
Bruno



On Thu, Jan 21, 2016 at 10:38 AM Sergio Fernández <
sergio.fernandez@redlink.co> wrote:

> On Wed, Jan 20, 2016 at 5:39 PM, Bruno Thiao-Layel <
> bruno.thiaolayel@gmail.com> wrote:
>>
>> I know about this implementation, that's why I ask about an existing
>> Titan database instead of an embedded one.
>> It doesn't seem possible to plug an instance of Elasticsearch AFAIK..
>>  that's why I needed to know if the marmotta-backend-titan could work with
>> an existing Titan database (with Elasticsearch).
>>
>
> You're right, the Titan backend is based on Tinkerpop Blueprints
> (blueprints-graph-sail); but only version 2.x provides a Sail, I think the
> project has decided to drop that support in the 3.x version the are
> currently incubating in Apache.
>
> So, in the end, you can easily build a Marmotta Backend if you already
> have a Sesame Sail. I know the Sesame folks stated to support Elasticsearch
> recently
> http://rdf4j.org/sesame/2.8/apidocs/index.html?org/openrdf/sail/elasticsearch/package-summary.html
> but I have never used it by myself. Maybe if Peter reads this thread he
> could provide you some more information. But definitely a Elasticsearch
> backend for Marmotta would be cool ;-)
>
> --
> Sergio Fernández
> Partner Technology Manager
> Redlink GmbH
> m: +43 6602747925
> e: sergio.fernandez@redlink.co
> w: http://redlink.co
>

Re: [Titan backend] Access to an existing one ?

[Sergio Fernández <se...@redlink.co>]

On Wed, Jan 20, 2016 at 5:39 PM, Bruno Thiao-Layel <
bruno.thiaolayel@gmail.com> wrote:
>
> I know about this implementation, that's why I ask about an existing Titan
> database instead of an embedded one.
> It doesn't seem possible to plug an instance of Elasticsearch AFAIK..
>  that's why I needed to know if the marmotta-backend-titan could work with
> an existing Titan database (with Elasticsearch).
>

You're right, the Titan backend is based on Tinkerpop Blueprints
(blueprints-graph-sail); but only version 2.x provides a Sail, I think the
project has decided to drop that support in the 3.x version the are
currently incubating in Apache.

So, in the end, you can easily build a Marmotta Backend if you already have
a Sesame Sail. I know the Sesame folks stated to support Elasticsearch
recently
http://rdf4j.org/sesame/2.8/apidocs/index.html?org/openrdf/sail/elasticsearch/package-summary.html
but I have never used it by myself. Maybe if Peter reads this thread he
could provide you some more information. But definitely a Elasticsearch
backend for Marmotta would be cool ;-)

-- 
Sergio Fernández
Partner Technology Manager
Redlink GmbH
m: +43 6602747925
e: sergio.fernandez@redlink.co
w: http://redlink.co

Re: [Titan backend] Access to an existing one ?

[Bruno Thiao-Layel <br...@gmail.com>]

Hi Sergio,

I know about this implementation, that's why I ask about an existing Titan
database instead of an embedded one.
It doesn't seem possible to plug an instance of Elasticsearch AFAIK..
 that's why I needed to know if the marmotta-backend-titan could work with
an existing Titan database (with Elasticsearch).

Thank you for your time,
Bruno


On Wed, Jan 20, 2016 at 4:47 PM Sergio Fernández <wi...@apache.org> wrote:

> Hi Bruno,
>
> On Wed, Jan 20, 2016 at 11:16 AM, Bruno Thiao-Layel <
> bruno.thiaolayel@gmail.com> wrote:
>>
>> But now, I would like to scale my needs through an existing Titan
>> database and use its full-text support with Elasticsearch.
>> My question is : is it possible to use an existing Titan database as a
>> backend for Marmotta ?
>> Or maybe, how to use Elasticsearch with the embedded Marmotta's Titan if
>> possible ?
>>
>
> Marmotta already provides a backend for Titan contributed by Viktor Gal:
>
>
> https://github.com/apache/marmotta/tree/develop/platform/backends/marmotta-backend-titan
>
> I'm not aware of someone actually using it on production. But you could
> give a try and report here any possible issue.
>
> Thanks for your interest.
>
> Cheers,
>
> --
> Sergio Fernández
> Partner Technology Manager
> Redlink GmbH
> m: +43 6602747925
> e: sergio.fernandez@redlink.co
> w: http://redlink.co
>

Re: [Titan backend] Access to an existing one ?

[Sergio Fernández <wi...@apache.org>]

Hi Bruno,

On Wed, Jan 20, 2016 at 11:16 AM, Bruno Thiao-Layel <
bruno.thiaolayel@gmail.com> wrote:
>
> But now, I would like to scale my needs through an existing Titan database
> and use its full-text support with Elasticsearch.
> My question is : is it possible to use an existing Titan database as a
> backend for Marmotta ?
> Or maybe, how to use Elasticsearch with the embedded Marmotta's Titan if
> possible ?
>

Marmotta already provides a backend for Titan contributed by Viktor Gal:

https://github.com/apache/marmotta/tree/develop/platform/backends/marmotta-backend-titan

I'm not aware of someone actually using it on production. But you could
give a try and report here any possible issue.

Thanks for your interest.

Cheers,

-- 
Sergio Fernández
Partner Technology Manager
Redlink GmbH
m: +43 6602747925
e: sergio.fernandez@redlink.co
w: http://redlink.co