Saving Moose model in MongoDB
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Hi everyone,
I am trying to save a moose model into MongoDB, using Voyage (Pharo 7, Moose 8). My problem is that it is not a tree. So I declared MooseEntity as voyageRoot. Now, it seems I have a loop into my graph. Do you have any idea of ho to debug that ? Cheers, -- ~~Jannik Laval~~ Enseignant-chercheur Responsable Pédagogique Licence Coordonnateur de Projet IUT Lumière, Université Lumière Lyon 2 laboratoire DISP +33 4 78 77 43 06 http://www.jannik-laval.eu http://www.phratch.com http://www.approchealpes.info _______________________________________________ Moose-dev mailing list [hidden email] https://www.list.inf.unibe.ch/listinfo/moose-dev |
Re: Saving Moose model in MongoDB
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Hi, what is the goal? if it is only a backup store (to later retreive the entire model), you could try something similar to the MSE serialization (done with a visitor). So it would be a 1 level tree nicolas On Mon, 2019-09-16 at 15:22 +0200, Jannik Laval wrote: > Hi everyone, > > I am trying to save a moose model into MongoDB, using Voyage (Pharo > 7, Moose 8). > My problem is that it is not a tree. So I declared MooseEntity as > voyageRoot. > > Now, it seems I have a loop into my graph. > Do you have any idea of ho to debug that ? > > Cheers, > -- > ~~Jannik Laval~~ > Enseignant-chercheur > Responsable Pédagogique Licence Coordonnateur de Projet > IUT Lumière, Université Lumière Lyon 2 > laboratoire DISP > +33 4 78 77 43 06 > http://www.jannik-laval.eu > http://www.phratch.com > http://www.approchealpes.info > > _______________________________________________ > Moose-dev mailing list > [hidden email] > https://www.list.inf.unibe.ch/listinfo/moose-dev Nicolas Anquetil RMod team -- Inria Lille _______________________________________________ Moose-dev mailing list [hidden email] https://www.list.inf.unibe.ch/listinfo/moose-dev |
Re: Saving Moose model in MongoDB
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The idea is to use it at runtime. So need to make queries.
But the idea of MSE serialization is good. Now I don’t know how we can manage the serialization strategy of MSE with the one of Voyage… -- ~~Jannik Laval~~ Enseignant-chercheur Responsable Pédagogique Licence Coordonnateur de Projet IUT Lumière, Université Lumière Lyon 2 laboratoire DISP +33 4 78 77 43 06 http://www.jannik-laval.eu http://www.phratch.com http://www.approchealpes.info > Le 16 sept. 2019 à 16:46, Nicolas Anquetil <[hidden email]> a écrit : > > > Hi, > > what is the goal? > > if it is only a backup store (to later retreive the entire model), you > could try something similar to the MSE serialization (done with a > visitor). > So it would be a 1 level tree > > nicolas > > On Mon, 2019-09-16 at 15:22 +0200, Jannik Laval wrote: >> Hi everyone, >> >> I am trying to save a moose model into MongoDB, using Voyage (Pharo >> 7, Moose 8). >> My problem is that it is not a tree. So I declared MooseEntity as >> voyageRoot. >> >> Now, it seems I have a loop into my graph. >> Do you have any idea of ho to debug that ? >> >> Cheers, >> -- >> ~~Jannik Laval~~ >> Enseignant-chercheur >> Responsable Pédagogique Licence Coordonnateur de Projet >> IUT Lumière, Université Lumière Lyon 2 >> laboratoire DISP >> +33 4 78 77 43 06 >> http://www.jannik-laval.eu >> http://www.phratch.com >> http://www.approchealpes.info >> >> _______________________________________________ >> Moose-dev mailing list >> [hidden email] >> https://www.list.inf.unibe.ch/listinfo/moose-dev > -- > Nicolas Anquetil > RMod team -- Inria Lille > > _______________________________________________ > Moose-dev mailing list > [hidden email] > https://www.list.inf.unibe.ch/listinfo/moose-dev _______________________________________________ Moose-dev mailing list [hidden email] https://www.list.inf.unibe.ch/listinfo/moose-dev |
Re: Saving Moose model in MongoDB
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I’m confused by what you want to do but you can try ston.
Stef
-------------------------------------------- Stéphane Ducasse 03 59 35 87 52 Assistant: Julie Jonas FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, Bât.A, Park Plaza Villeneuve d'Ascq 59650 France _______________________________________________ Moose-dev mailing list [hidden email] https://www.list.inf.unibe.ch/listinfo/moose-dev |
Re: Saving Moose model in MongoDB
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In fact, I need to save models and query them.
I think we can do it with Gemstone. But I thought we can have something similar with MongoDB.
In fact, the point is « how to identify circular references » to avoid infinite loop in Voyage ?
Cheers
--
~~Jannik Laval~~ Enseignant-chercheur Responsable Pédagogique Licence Coordonnateur de Projet IUT Lumière, Université Lumière Lyon 2 laboratoire DISP +33 4 78 77 43 06 http://www.jannik-laval.eu http://www.phratch.com http://www.approchealpes.info
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Re: Saving Moose model in MongoDB
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But you can query a model with MooseQuery. Why do you need something else?
Anne
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Re: Saving Moose model in MongoDB
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to save it outside the image :)
--
~~Jannik Laval~~ Enseignant-chercheur Responsable Pédagogique Licence Coordonnateur de Projet IUT Lumière, Université Lumière Lyon 2 laboratoire DISP +33 4 78 77 43 06 http://www.jannik-laval.eu http://www.phratch.com http://www.approchealpes.info
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In reply to this post by Jannik Laval-2
Hi Jannik,
Did you think to use a graph database? No need to solve circular dependencies and probably more efficient for querying. I did not try but there is an example here: https://github.com/quentinplessis/smalltalk-neo4j Cheers, Christophe.
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Re: Saving Moose model in MongoDB
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Hum, probably better than mongoDB.
I will try. Thank you --
~~Jannik Laval~~ Enseignant-chercheur Responsable Pédagogique Licence Coordonnateur de Projet IUT Lumière, Université Lumière Lyon 2 laboratoire DISP +33 4 78 77 43 06 http://www.jannik-laval.eu http://www.phratch.com http://www.approchealpes.info
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Re: Saving Moose model in MongoDB
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In reply to this post by jannik laval
This is not clear to me.
you can save a model in Ston or other and you can query it in Moose. What are the size of your models because you can load them all and query them.
But that you can do it in MSE, STON (with one line), Fuel,
-------------------------------------------- Stéphane Ducasse 03 59 35 87 52 Assistant: Julie Jonas FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, Bât.A, Park Plaza Villeneuve d'Ascq 59650 France _______________________________________________ Moose-dev mailing list [hidden email] https://www.list.inf.unibe.ch/listinfo/moose-dev |
Re: Saving Moose model in MongoDB
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What is Ston. I am not sure to know it.
I would like to have a lazy loading. Not all the model. We are using Orion, which makes the model partial. In fact, we don’t need it for now, but we want to have this perspective. Jannik
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Re: Saving Moose model in MongoDB
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STON is textual serialisation format.
This is not stroing in mongo that will give you that. You will have to change the loading of model parts and Moose does not support it. In addition if you have a graph how to you specify that an entity that is referenced should not be loaded (transitively)
I do not get this.
-------------------------------------------- Stéphane Ducasse 03 59 35 87 52 Assistant: Julie Jonas FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, Bât.A, Park Plaza Villeneuve d'Ascq 59650 France _______________________________________________ Moose-dev mailing list [hidden email] https://www.list.inf.unibe.ch/listinfo/moose-dev |
Re: Saving Moose model in MongoDB
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Ok, I already use it : STONJSON :)
That is a question I have not solved.
:D
Ok, I will do it for this task
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Re: Saving Moose model in MongoDB
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Yann Lesage at synectique tried to do external storage of moose models. He spent a lot of time on it, did several experiments. MongoDB was not the solution he chose in the end (cyril told yesterday me what it was but I already forgot :-) ) It was still very slow when he left the company (prior to it going bankrupt) and speedup was involving analyses to try to reduce the number of request to the DB. Bottom line is: do you have months of full time development to put in it? nicolas -- Nicolas Anquetil RMod team -- Inria Lille _______________________________________________ Moose-dev mailing list [hidden email] https://www.list.inf.unibe.ch/listinfo/moose-dev |
Re: Saving Moose model in MongoDB
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And it did not work when you have a graph….
And it was cyril (the other delaunay that did it ). Stef
-------------------------------------------- Stéphane Ducasse 03 59 35 87 52 Assistant: Julie Jonas FAX 03 59 57 78 50 TEL 03 59 35 86 16 S. Ducasse - Inria 40, avenue Halley, Parc Scientifique de la Haute Borne, Bât.A, Park Plaza Villeneuve d'Ascq 59650 France _______________________________________________ Moose-dev mailing list [hidden email] https://www.list.inf.unibe.ch/listinfo/moose-dev |
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In reply to this post by Stéphane Ducasse
On Mon, Sep 16, 2019 at 5:02 PM Stéphane Ducasse
<[hidden email]> wrote: > > This is not clear to me. > you can save a model in Ston or other > and you can query it in Moose. > > What are the size of your models because you can load them all and query them. > > > to save it outside the image :) > > > But that you can do it in MSE, STON (with one line), Fuel, ~2011 we created a Fuel exporter/importer for Moose models, which was available for some versions (I think was removed later because of a bug with huge files that couldn't fix). If I remember well, all the effort was in customizations to avoid serializing generated/derivative objects that could be regenerated on materialization. But no problem with circular references in the object graph. Now I have no idea how different could it be with the new Moose. Regards, Martín > > > -- > ~~Jannik Laval~~ > Enseignant-chercheur > Responsable Pédagogique Licence Coordonnateur de Projet > IUT Lumière, Université Lumière Lyon 2 > laboratoire DISP > +33 4 78 77 43 06 > http://www.jannik-laval.eu > http://www.phratch.com > http://www.approchealpes.info > > Le 16 sept. 2019 à 18:18, Anne Etien <[hidden email]> a écrit : > > But you can query a model with MooseQuery. Why do you need something else? > > Anne > > Le 16 sept. 2019 à 18:04, Jannik Laval <[hidden email]> a écrit : > > In fact, I need to save models and query them. > I think we can do it with Gemstone. But I thought we can have something similar with MongoDB. > > In fact, the point is « how to identify circular references » to avoid infinite loop in Voyage ? > > Cheers > -- > ~~Jannik Laval~~ > Enseignant-chercheur > Responsable Pédagogique Licence Coordonnateur de Projet > IUT Lumière, Université Lumière Lyon 2 > laboratoire DISP > +33 4 78 77 43 06 > http://www.jannik-laval.eu > http://www.phratch.com > http://www.approchealpes.info > > Le 16 sept. 2019 à 17:24, Stéphane Ducasse <[hidden email]> a écrit : > > I’m confused by what you want to do but you can try ston. > > Stef > > On 16 Sep 2019, at 16:58, Jannik Laval <[hidden email]> wrote: > > The idea is to use it at runtime. So need to make queries. > But the idea of MSE serialization is good. > > Now I don’t know how we can manage the serialization strategy of MSE with the one of Voyage… > > -- > ~~Jannik Laval~~ > Enseignant-chercheur > Responsable Pédagogique Licence Coordonnateur de Projet > IUT Lumière, Université Lumière Lyon 2 > laboratoire DISP > +33 4 78 77 43 06 > http://www.jannik-laval.eu > http://www.phratch.com > http://www.approchealpes.info > > Le 16 sept. 2019 à 16:46, Nicolas Anquetil <[hidden email]> a écrit : > > > Hi, > > what is the goal? > > if it is only a backup store (to later retreive the entire model), you > could try something similar to the MSE serialization (done with a > visitor). > So it would be a 1 level tree > > nicolas > > On Mon, 2019-09-16 at 15:22 +0200, Jannik Laval wrote: > > Hi everyone, > > I am trying to save a moose model into MongoDB, using Voyage (Pharo > 7, Moose 8). > My problem is that it is not a tree. So I declared MooseEntity as > voyageRoot. > > Now, it seems I have a loop into my graph. > Do you have any idea of ho to debug that ? > > Cheers, > -- > ~~Jannik Laval~~ > Enseignant-chercheur > Responsable Pédagogique Licence Coordonnateur de Projet > IUT Lumière, Université Lumière Lyon 2 > laboratoire DISP > +33 4 78 77 43 06 > http://www.jannik-laval.eu > http://www.phratch.com > http://www.approchealpes.info > > _______________________________________________ > Moose-dev mailing list > [hidden email] > https://www.list.inf.unibe.ch/listinfo/moose-dev > > -- > Nicolas Anquetil > RMod team -- Inria Lille > > _______________________________________________ > Moose-dev mailing list > [hidden email] > https://www.list.inf.unibe.ch/listinfo/moose-dev > > > _______________________________________________ > Moose-dev mailing list > [hidden email] > https://www.list.inf.unibe.ch/listinfo/moose-dev > > > -------------------------------------------- > Stéphane Ducasse > http://stephane.ducasse.free.fr > http://www.synectique.eu / http://www.pharo.org > 03 59 35 87 52 > Assistant: Julie Jonas > FAX 03 59 57 78 50 > TEL 03 59 35 86 16 > S. Ducasse - Inria > 40, avenue Halley, > Parc Scientifique de la Haute Borne, Bât.A, Park Plaza > Villeneuve d'Ascq 59650 > France > > _______________________________________________ > Moose-dev mailing list > [hidden email] > https://www.list.inf.unibe.ch/listinfo/moose-dev > > > _______________________________________________ > Moose-dev mailing list > [hidden email] > https://www.list.inf.unibe.ch/listinfo/moose-dev > > > _______________________________________________ > Moose-dev mailing list > [hidden email] > https://www.list.inf.unibe.ch/listinfo/moose-dev > > > _______________________________________________ > Moose-dev mailing list > [hidden email] > https://www.list.inf.unibe.ch/listinfo/moose-dev > > > -------------------------------------------- > Stéphane Ducasse > http://stephane.ducasse.free.fr > http://www.synectique.eu / http://www.pharo.org > 03 59 35 87 52 > Assistant: Julie Jonas > FAX 03 59 57 78 50 > TEL 03 59 35 86 16 > S. Ducasse - Inria > 40, avenue Halley, > Parc Scientifique de la Haute Borne, Bât.A, Park Plaza > Villeneuve d'Ascq 59650 > France > > _______________________________________________ > Moose-dev mailing list > [hidden email] > https://www.list.inf.unibe.ch/listinfo/moose-dev Moose-dev mailing list [hidden email] https://www.list.inf.unibe.ch/listinfo/moose-dev |
Re: Saving Moose model in MongoDB
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In reply to this post by Nicolas Anquetil
Ok, thank you for the feedback.
I will use mse files :) -- ~~Jannik Laval~~ Enseignant-chercheur Responsable Pédagogique Licence Coordonnateur de Projet IUT Lumière, Université Lumière Lyon 2 laboratoire DISP +33 4 78 77 43 06 http://www.jannik-laval.eu http://www.phratch.com http://www.approchealpes.info > Le 17 sept. 2019 à 13:52, Nicolas Anquetil <[hidden email]> a écrit : > > > > Yann Lesage at synectique tried to do external storage of moose models. > > He spent a lot of time on it, did several experiments. > MongoDB was not the solution he chose in the end (cyril told yesterday > me what it was but I already forgot :-) ) > > It was still very slow when he left the company (prior to it going > bankrupt) and speedup was involving analyses to try to reduce the > number of request to the DB. > > Bottom line is: do you have months of full time development to put in > it? > > nicolas > > -- > Nicolas Anquetil > RMod team -- Inria Lille > > _______________________________________________ > Moose-dev mailing list > [hidden email] > https://www.list.inf.unibe.ch/listinfo/moose-dev _______________________________________________ Moose-dev mailing list [hidden email] https://www.list.inf.unibe.ch/listinfo/moose-dev |
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