Hi Johann, thanks. I have a working solution for migration and possibly one day I will ask in the mailinglist for a diskussion about this.
Regards Sabine On Thu, Nov 21, 2013 at 4:09 PM, Johan Fabry [via Smalltalk] < ml-node+s1294792n4723998...@n4.nabble.com> wrote: > Hi Sabine, > > thank you for your observations, interesting pointers and offer for help! > I will integrate as much as possible and your comments are certainly > welcome! > > I am not so knowledgeable about data migration, I understand what you are > saying but I have no deep insights. I will add something about data > migration to the documentation but I think it will be brief. > > Greetings, > > On Nov 21, 2013, at 6:16 AM, Sabine Knöfel <[hidden > email]<http://user/SendEmail.jtp?type=node&node=4723998&i=0>> > wrote: > > > Hi Johan, > > > > I use MongoDB and voyage for www.spesenfuchs.de and it works fine for > me. > > > > My remarks: > > > > 1) you could also add VOMongoTransientDescription (see class comment) > and VOMongoToManyDescription to chapter "enhancing storage". > > > > 2) "VORepository current reset" is imo important to know. As far as I > understand, it forces to reload all objects from database. I need this > after changing the VOMongo....Descriptions. > > > > 3) I like the possibility to have a look into the values in the > database. For this, there are 2 very useful tools: http://rockmongo.com/ for > windows and http://robomongo.org/ for mac. I recommend to use it. Helps a > lot. > > > > 4) I think as far as you start to implement a real app, you need this > solution to implement circular references > http://forum.world.st/Voyage-Circular-references-td4691940.html#a4703493 > > > > 5) another not so important point > > > http://forum.world.st/your-opinion-about-storing-FixedDecimal-in-Mongo-td4704104.html#a4704127 > > > > 6) I think you do also know: > > http://esug.org/data/ESUG2013/4-Thu/03-ESUG2013%20-%20VoyageTutorial.pdf > > http://smallworks.com.ar/web/blog > > > > 7) Last point, you could add some words/thoughts about data migration: > what do I mean with this? Today, my model is as it is. My app runs. Data is > generated in MongoDB. But after e.g. one month, I decide to change my > model. Now, there are 2 possibilities: migrate all data while installing > the new version or some kind of "lazy" migration at the moment, the object > is loaded from mongo (I do this within the magritte description). Both has > advantages and disadvantages and depends on the situation. I am interested > in other opinions and solutions for this. > > > > If I can contribute more please tell me. > > > > Regards > > Sabine > > > > ---> Save our in-boxes! http://emailcharter.org <--- > > Johan Fabry - http://pleiad.cl/~jfabry > PLEIAD lab - Computer Science Department (DCC) - University of Chile > > > > > ------------------------------ > If you reply to this email, your message will be added to the discussion > below: > > http://forum.world.st/Cleaning-up-Voyage-Documentation-tp4723834p4723998.html > To start a new topic under Pharo Smalltalk Users, email > ml-node+s1294792n1310670...@n4.nabble.com > To unsubscribe from Pharo Smalltalk Users, click > here<http://forum.world.st/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=1310670&code=c2FiaW5lLmtub2VmZWxAZ21haWwuY29tfDEzMTA2NzB8MTA0OTM5MTYx> > . > NAML<http://forum.world.st/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> > -- View this message in context: http://forum.world.st/Cleaning-up-Voyage-Documentation-tp4723834p4724292.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.
