March 2013 - Pharo-users - lists.pharo.org

Re: [Pharo-users] does MongoTalk implement modifier operators? e.g. $set

by Yanni Chiu

On 08/03/13 2:59 AM, Sabine KnÃ¶fel wrote: > > What are the experiences of bigger projects using MongoTalk - do you always > write the *whole *collection? That was the confusion in the other thread. The whole *Smalltalk* Collection instance holding DateAndTime objects is written out, because the DateAndTime instances are not made separate documents. MongoTalk does not re-write the whole MongeDB collection. However, it currently does write out the full document into each mongo collection. If your objects hold image data (or other large data items), then it can be a problem to re-write the entire attribute set. It may be possible to add something like the Magritte memento framework, to be able to use mongo update operations.

March 8, 2013

Re: [Pharo-users] Are all PharoVMs NativeBoost enabled VMs now?

by Esteban Lorenzano

exactly or in other way: all PharoVMs are NBCogVM, but branded :) Esteban On Mar 8, 2013, at 12:35 PM, MartinW <wm(a)fastmail.fm> wrote: > Are all PharoVMs NativeBoost enabled VMs now? So the NBCogVMs are no longer > relevant? > > > > -- > View this message in context: http://forum.world.st/Are-all-PharoVMs-NativeBoost-enabled-VMs-now-tp467572… > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >

March 8, 2013

Are all PharoVMs NativeBoost enabled VMs now?

by MartinW

Are all PharoVMs NativeBoost enabled VMs now? So the NBCogVMs are no longer relevant? -- View this message in context: http://forum.world.st/Are-all-PharoVMs-NativeBoost-enabled-VMs-now-tp467572… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

March 8, 2013

Re: [Pharo-users] does MongoTalk implement modifier operators? e.g. $set

by Esteban Lorenzano

I have an app who has large documents that are saved each time someone modifies it... since is not a frequent operation, the app performs really well. why would be strange? a document is not more than a bunch of dictionaries... of course in certain cases you can optimize, but most of the time you don'y need it. Esteban On Mar 8, 2013, at 8:59 AM, Sabine KnÃ¶fel <sabine.knoefel(a)gmail.com> wrote: > Please have a look at http://docs.mongodb.org/manual/applications/update/ > > "The update() method can either replace the existing document with the new > document* or update specific fields in the existing document.*" > > "Modifier Operators" such as $set, are performed in the context of the > database and not at the client. > > See also here (german): > http://books.google.de/books?id=6wAJLJRxFt8C&pg=PA156&lpg=PA156&dq=%22Modif… > > In this book, the autor writes, that you will go to database hell, if you > always update the whole document instead of single fields. :-) > > What are the experiences of bigger projects using MongoTalk - do you always > write the *whole *collection? What about the performance with this solution? > Is this feasible? It sounds strange to me. > > > > -- > View this message in context: http://forum.world.st/does-MongoTalk-implement-modifier-operators-e-g-set-t… > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >

March 8, 2013

Re: [Pharo-users] does MongoTalk implement modifier operators? e.g. $set

by Sabine KnÃ¶fel

Please have a look at http://docs.mongodb.org/manual/applications/update/ "The update() method can either replace the existing document with the new document* or update specific fields in the existing document.*" "Modifier Operators" such as $set, are performed in the context of the database and not at the client. See also here (german): http://books.google.de/books?id=6wAJLJRxFt8C&pg=PA156&lpg=PA156&dq=%22Modif… In this book, the autor writes, that you will go to database hell, if you always update the whole document instead of single fields. :-) What are the experiences of bigger projects using MongoTalk - do you always write the *whole *collection? What about the performance with this solution? Is this feasible? It sounds strange to me. -- View this message in context: http://forum.world.st/does-MongoTalk-implement-modifier-operators-e-g-set-t… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

March 8, 2013

Re: [Pharo-users] does MongoTalk implement modifier operators? e.g. $set

by Yanni Chiu

On 07/03/13 5:51 AM, Sabine KnÃ¶fel wrote: > > So, can anyone give me a code snippet how to use update modifiers in > Mongotalk? Here's a similar question: http://lists.gforge.inria.fr/pipermail/pharo-project/2012-November/071675.h… The link is to the end of the thread. The relevant text is: "that's how the driver works: is document-atomic". So, your Person object is a document, and the MongoDB driver reads/writes each document all at once (i.e. all the Person attributes together). You cannot update a Person attribute individually using a Mongo update, unless you write custom code.

March 7, 2013

does MongoTalk implement modifier operators? e.g. $set

by Sabine KnÃ¶fel

Hi, I managed reading and writing my model (e.g. Person objects) into MongoDB with MongoTalk. But I did use replace:with: e.g. "get person from db with OID - this is a dictionary with ALL OLD fields of the person as stored in the database" thePersonFromDatabaseDict := (self personsCollection queryOne: [ :query | query where: {('_id' -> aPerson mongoObjectId )} asDictionary ]) theNewDict := aPerson mongoDataDict "dictionary with the NEW fields for this person" self personsCollection replace: thePersonFromDatabaseDict with: theNewDict Which means I replace the whole person object in the database with my current instance data in the image. Also it is much overhead creating the dictionary with all fields from the person in the image. This is not ok, when I want to set e.g. one field in the person object. For this reason I want to use the "Modifier operators", e.g. $set http://docs.mongodb.org/manual/applications/update/ >From there: "Update a Field in a Document. Use $set to update a value of a field. The following operation queries the bios collection for the first document that has an _id field equal to 1 and sets the value of the field middle, in the subdocument name, to Warner: db.bios.update( { _id: 1 }, { $set: { 'name.middle': 'Warner' }, } ) *I did not find how to use this in MongoTalk. I can not imagine that this functionality is missing but I don't know how to create this from Mongotalk. Unfortunately there is no documentation and as far as I understand there are no test cases for update modifiers.* So, can anyone give me a code snippet how to use update modifiers in Mongotalk? Sabine -- View this message in context: http://forum.world.st/does-MongoTalk-implement-modifier-operators-e-g-set-t… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

March 7, 2013

Re: [Pharo-users] in pharo 2.0 on linux, how do I remove a method using the keyboard?

by Markus Schlager

On Mon, 4 Mar 2013, Paul DeBruicker wrote: > In pharo 1.4 I would highlight the method in the right most pane of the > OmniBrowser and hit ctrl+x. I can see a faint x,m next to Remove... in > the menu when I right click the method, but hitting ctrl+x or ctrl+m or > ctrl+x+m or alt+x or alt+x+m or alt+m doesn't seem to do anything. 'alt+x alt+m' in this order does the desired here on dell with ubuntu. I'm using the latest.zip-image with Pharo-1.4-one-click, since pharo2.0-one-click complains about Pharo2.0-one-click.app/Contents/Linux/pharo: /lib/tls/i686/cmov/libc.so.6: version `GLIBC_2.15' not found (required by Pharo-2.0/Pharo2.0-one-click.app/Contents/Linux/pharo) Markus

March 5, 2013

Re: [Pharo-users] in pharo 2.0 on linux, how do I remove a method using the keyboard?

by Paul DeBruicker

Which key do I use to send cmd on a dell laptop in Linux? Ctrl and alt do not do it Thanks Paul On Mar 5, 2013, at 12:06 AM, stephane ducasse <stephane.ducasse(a)free.fr> wrote: > paul > > normally in nautilus you have two modes: > - the old shortcut bindings > - the new ones: for the new ones on mac you should do cmd+x > Stef > > On Mar 5, 2013, at 4:41 AM, Paul DeBruicker <pdebruic(a)gmail.com> wrote: > >> In pharo 1.4 I would highlight the method in the right most pane of the >> OmniBrowser and hit ctrl+x. I can see a faint x,m next to Remove... in >> the menu when I right click the method, but hitting ctrl+x or ctrl+m or >> ctrl+x+m or alt+x or alt+x+m or alt+m doesn't seem to do anything. >> >> >> Thanks for the help >> > >

March 5, 2013

Re: [Pharo-users] in pharo 2.0 on linux, how do I remove a method using the keyboard?

by stephane ducasse

paul normally in nautilus you have two modes: - the old shortcut bindings - the new ones: for the new ones on mac you should do cmd+x Stef On Mar 5, 2013, at 4:41 AM, Paul DeBruicker <pdebruic(a)gmail.com> wrote: > In pharo 1.4 I would highlight the method in the right most pane of the > OmniBrowser and hit ctrl+x. I can see a faint x,m next to Remove... in > the menu when I right click the method, but hitting ctrl+x or ctrl+m or > ctrl+x+m or alt+x or alt+x+m or alt+m doesn't seem to do anything. > > > Thanks for the help >

March 5, 2013