seaside April 2004

seaside@lists.squeakfoundation.org

35 participants
41 discussions

transaction engines?
by radoslav hodnicak 06 May '04

06 May '04

Does anybody happen to know/have an engine that implements transactions for normal smalltalk objects? No external access or anything needed. Currently I'm using GLORP and it works well for loading and saving objects (postgres can massage a lot of data quickly), but having separate glorp session for every seaside session is biting me more and more often, especially because the unit of works cannot be nested in glorp. It doesn't work with forked browser paths too. I figure having a single glorp session to actually do the wire transfer should be enough, and I'd do the rest in image alone. rado -- pgp.mit.edu 0x30DEBAE6 12EE FED5 D5B1 77ED 5637 EB77 2A5F 22F9 30DE BAE6

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RE: [Seaside] VW Seaside V 2.5.11 from Cincom Store does not load
by Bany, Michel 29 Apr '04

29 Apr '04

I am the one who posted the new version. Just guessing the following. When a package gets loaded, StORE keeps a copy of the source code in a temporary file. The name of the temporary file is derived from the package name. Since some of the Seaside packages have a name that includes a "/", this may create difficulties on non-Microsoft machines. If my guess is correct, then this is a StORE problem. It could be eliminated by renaming the offending Seaside packages. But, for now, I suggest you create a subdirectory psql_public_cst/Seaside and give it another try. That may work.... _________________________________ Michel Bany Cincom Systems S.A. Avenue Louis Casai 18 1211 GENEVE 28 Switzerland Phone : +41 22 747 75 18 Mobile : +33 608 933 306 Fax : +41 22 747 79 90 Email : mbany(a)cincom.com Home page : www.cincom.com/smalltalk/ -----Original Message----- From: seaside-bounces(a)lists.squeakfoundation.org [mailto:seaside-bounces@lists.squeakfoundation.org]On Behalf Of Roger Whitney Sent: Thursday, April 29, 2004 2:06 AM To: The Squeak Enterprise Aubergines Server - general discussion. Subject: Re: [Seaside] VW Seaside V 2.5.11 from Cincom Store does not load Yes I start loading the Seaside Web-Toolkit bundle. It then loads Seaside-VW bundle which is a prereq. of the Seaside Web-Toolkit bundle. While loading the later bundle I get an exception due to one of the missing files given below. This is when I load the new version of seaside posted April 28, 2004 by mbany. I have loaded previous versions successfully. On Apr 28, 2004, at 2:37 PM, Brett Taylor wrote: > Make sure you loaded the "Seaside Web-Toolkit" bundle. > Brett > On Wed, 2004-04-28 at 14:13, Roger Whitney wrote: >> I tried loading the new version of Seaside from the Cincom Store >> repository (version 2.5.11.0). It fails to load because it looks for >> the following files on my hard drive. >> >> psql_public_cst/Seaside/WebToolkit269.pst >> psql_public_cst/Seaside/VW-Squeak265.pst >> >> Is there a fix to this problem? I would write to the person the posted >> the code in Store, but I don't have their email address. >> ---- >> Roger Whitney Department of Computer Science >> whitney(a)cs.sdsu.edu San Diego State University >> http://www.eli.sdsu.edu/ San Diego, CA 92182-7720 >> (619) 583-1978 >> (619) 594-3535 (office) >> (619) 594-6746 (fax) >> >> _______________________________________________ >> Seaside mailing list >> Seaside(a)lists.squeakfoundation.org >> http://lists.squeakfoundation.org/listinfo/seaside >> > > _______________________________________________ > Seaside mailing list > Seaside(a)lists.squeakfoundation.org > http://lists.squeakfoundation.org/listinfo/seaside > > ---- Roger Whitney Department of Computer Science whitney(a)cs.sdsu.edu San Diego State University http://www.eli.sdsu.edu/ San Diego, CA 92182-7720 (619) 583-1978 (619) 594-3535 (office) (619) 594-6746 (fax) _______________________________________________ Seaside mailing list Seaside(a)lists.squeakfoundation.org http://lists.squeakfoundation.org/listinfo/seaside

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VW Seaside V 2.5.11 from Cincom Store does not load
by Roger Whitney 29 Apr '04

29 Apr '04

I tried loading the new version of Seaside from the Cincom Store repository (version 2.5.11.0). It fails to load because it looks for the following files on my hard drive. psql_public_cst/Seaside/WebToolkit269.pst psql_public_cst/Seaside/VW-Squeak265.pst Is there a fix to this problem? I would write to the person the posted the code in Store, but I don't have their email address. ---- Roger Whitney Department of Computer Science whitney(a)cs.sdsu.edu San Diego State University http://www.eli.sdsu.edu/ San Diego, CA 92182-7720 (619) 583-1978 (619) 594-3535 (office) (619) 594-6746 (fax)

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ROE - VW 42 Port
by Brett Taylor 27 Apr '04

27 Apr '04

I've just completed the ROE 42 port to VisualWorks. I've published the port on the Cincom Public Store as version 4.2 of the ROE bundle. The port was pretty straight forward, but did require some modifications to the Squeak code in order to work in VW. I've attached a change set with the changes. I've also added support for Oracle by creating OracleRelation. See the test class for RATestOracleSemantics for examples. Some Notes: 1) The differences between Smalltalk database access libraries (EXDI in VisualWorks) in VW and Squeaks requires separate versions of the methods RASQLRelation>>query: & RASQLRelation>>exec: for each dialect. The database library dictates how the DatabaseConnection is accessed. So, RAPostgresRelation must perform the query different depending upon the database access library being used. This needs to be addressed through refactoring the exec: and query: methods. One option would be to create a wrapper class for the DB Access library with a standard protocol across libraries. 2) The problems remain with the way attribute names are compared by different databases. I've included some modifications to sort these problems out by delegating attribute name comparisons to the ConcreteRelation subclass. Brett Taylor

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Re: [Seaside] Re: seaside hosting
by Pablo Iar�a 27 Apr '04

27 Apr '04

Hi Avi, There are several companies providing free java/jsp hosting out there (there's a partial list of them at http://www.oinko.net/freejsp). For je2ee hosting I found http://www.eapps.com/ManagedHosting/ManagedHosting.jsp I also found " Javalobby To Help Provider of Free J2EE Hosting" (at http://www.javalobby.org/thread.jspa?forumID=91&threadID=10755) I don't know their internals but I *guess* that to deploy an app they should upload the .war file and the container gets reloaded by the server. Just to mention other language, freezope.org provides free hosting using then zope web application framework (developed with python). There are ohters web application frameworks for python like webware. Pablo.- On Mon, 26 Apr 2004 20:32 , Avi Bryant <avi(a)beta4.com> sent: > >On Apr 26, 2004, at 8:26 PM, Pablo Iaría wrote: > >> Hi all, >> I underestand your arguments. They are all true. But if web >> hosting is >> possible even using fat cows like java/j2ee/tomcat .... we should find >> the way to >> do it using seaside (should seaside have one container per application >> too?). > >Are there hosting providers out there that specialize in J2EE or >Servlet apps? What model to they use (do you just upload a .war, >or...)? Can you point us to some? Are any of them free? > >Avi >_______________________________________________ >Seaside mailing list >Seaside(a)lists.squeakfoundation.org >http://lists.squeakfoundation.org/listinfo/seaside

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Re: [Seaside] Newbie: GOODS with Seaside
by Ruben Bakker 27 Apr '04

27 Apr '04

On Monday, April 26, 2004, at 08:21PM, Avi Bryant <avi(a)beta4.com> wrote: >GOODS doesn't have a connection pool, and you would have to be very >careful when writing one to get the semantics right, since connections >are extremely stateful things in GOODS. Isn't this a very common problem with database systems? The connection/session has some maybe still open transaction with uncommited data etc. Would it be different say with GLORP? Or has GOODS client data that mustn't be reused? >Much better would be to hack >both client and server to allow multiple "connections" to be >multiplexed over one actual TCP socket connection, but this requires >diving into the goodsrv.cxx source, which may not appeal to everyone. That would really better than any DBMS I've seen so far... But c++ is not really the language I'm looking for :). >If the load isn't too heavy, however, you shouldn't even need to logout >of GOODS - once the session has expired, the socket connection should >get garbage collected and closed, and all the connection resources on >both server and client will be released. Obviously this isn't ideal, >but it may work out in practice.

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Re: [Seaside] Re: seaside hosting
by Pablo Iar�a 27 Apr '04

27 Apr '04

Hi all, I underestand your arguments. They are all true. But if web hosting is possible even using fat cows like java/j2ee/tomcat .... we should find the way to do it using seaside (should seaside have one container per application too?). I don't see the solution, but there must be one. If seaside could be hosted just like any other web application framework then more people would use/support it. Anyway, thanks for your comments.... Pablo.- On Mon, 26 Apr 2004 16:24 , Avi Bryant <avi(a)beta4.com> sent: > >On Apr 26, 2004, at 3:43 PM, Chris Double wrote: > >> How would Seaside hosting work? Would an application be installed in a >> shared image, containing other applications from other users? I imagine >> this would be the most memory efficient for the hoster but would cause >> problems with editing, security, etc. > >Yeah, I don't think that would be a very good idea. > >> Providing each user with a Squeak >> VM would be the other option but then how would the hosting provider >> know >> that it is being used for Hosting web applications rather than for >> general purpose Squeak usage? > >Well, how does anyone ever know that? For sites that host PHP, for >example, someone could conceivably write, say, an IRC server in PHP and >get that hosted unknowingly... if you block all ports from the outside >and make sure that they can only get through to their application >using, say, mod_proxy through an apache vhost config (maybe allowing >VNC traffic through as well so they can remotely administer their >image), it's unlikely they'll use it for anything but web apps. > >You could also set things up so that they could only deploy package >files, not full images - there would be a preconfigured Seaside image >that their packages would get loaded into, running in a sandbox that >wasn't directly user readable or writable. This would give you a >little bit more control, and possibly be more convenient for the users >anyway. > >You'd want to work really hard to strip this image down so that the >memory footprint was as small as possible. That's the main problem >with Seaside hosting: you need machines with *lots* of RAM. > >Avi > >_______________________________________________ >Seaside mailing list >Seaside(a)lists.squeakfoundation.org >http://lists.squeakfoundation.org/listinfo/seaside

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seaside hosting
by Pablo Iar�a 27 Apr '04

27 Apr '04

Hi all, Does anybody know if there's some place to host a seaside application for free (just like freezope.org) ? Thanks in advance, Pablo.-

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Re: [Seaside] Newbie: GOODS with Seaside
by Ruben Bakker 26 Apr '04

26 Apr '04

thanks Julian... I'm glad I wasn't totally wrong. Does seaside 2.5 alpha run on a 3.7a squeak? Ruben On Monday, April 26, 2004, at 06:03PM, Julian Fitzell <julian(a)beta4.com> wrote: >Ruben Bakker wrote: >> I've played with the examples and have created my first very simple seaside application. I've added GOODS to make my domain model persistent. >> >> I'm unsure if I'm on the right track: >> I have extended WAControllerSession to hold the KKDatabase instance. I'd like to logout the KKDatabase when the WAControllerSession expires. How do I get notified when the session expires? I tried pageExpired and expire, but they didn't get called. Or should I manage the KKDatabase instantiation and logout for each request? Does there exist a pooling functionality so the overhead creating/destroying KKDatabases could be minimized? > >I haven't used GOODS in smalltalk yet, but you seem to have the right >idea. The #expire method is only used if you want to manually expire a >session, though. And #pageExpired gets called when you visit a page >that is no longer in the cache. > >You don't say what version of Seaside you're using but I'm guessing it's >2.3. I've merged into the current 2.5 alpha release a hook that we >added at work that gets called when a session gets expired. If you want >to add this yourself in 2.3, take a look at >WARegistry>>collectExpiredHandlers. If you're playing with 2.5a, you >can implement #unregistered on your session class. > >That said, you can have a lot of sessions hanging around for quite a >while in a large application. I don't know if GOODS comes with a >connection pool but it's probably very easy to write one. I wrote one >for OmniBase using a SharedQueue and maybe a half-dozen methods. It >really does make things so much simpler and way more efficient in terms >of the number of database connections around at any point. > >Julian >_______________________________________________ >Seaside mailing list >Seaside(a)lists.squeakfoundation.org >http://lists.squeakfoundation.org/listinfo/seaside > >

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Newbie: GOODS with Seaside
by Ruben Bakker 26 Apr '04

26 Apr '04

I've played with the examples and have created my first very simple seaside application. I've added GOODS to make my domain model persistent. I'm unsure if I'm on the right track: I have extended WAControllerSession to hold the KKDatabase instance. I'd like to logout the KKDatabase when the WAControllerSession expires. How do I get notified when the session expires? I tried pageExpired and expire, but they didn't get called. Or should I manage the KKDatabase instantiation and logout for each request? Does there exist a pooling functionality so the overhead creating/destroying KKDatabases could be minimized? How do you handle external resources like Database connections and sessions in seaside (GOODS, GLORP etc)? Thankx for your help. Ruben

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seaside April 2004