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RE: [Zope] Pluggable brains?
by Alexander Staubo 06 Jul '99

06 Jul '99

Buy iirc, in Zen philosophy there is no soul, only the karma. ;-) -- Alexander Staubo http://www.mop.no/~alex/ "What the hell, he thought, you're only young once, and threw himself out of the window. That would at least keep the element of surprise on his side." --Douglas Adams, _The Hitchhiker's Guide to the Galaxy_ >-----Original Message----- >From: zope-admin(a)zope.org [mailto:zope-admin@zope.org]On >Behalf Of Boris >Borcic >Sent: 6. juli 1999 01:03 >To: Tony McDonald >Cc: Zope List >Subject: Re: [Zope] Pluggable brains? > > >Tony McDonald wrote: > >> At last! an explanation....I came across this term and thought it was >> the strangest thing I'd seen in a software description for a long >> time (visions of Igor passing a 'fresh brain' to a ZopeMeister came >> to mind!). > >It's easier if you envision yourself in the role of God, plugging >brains (and instincts) into animals so that they will fit in their >environment. > >If "pluggable brain" sounds strange, what of "pluggable soul" ? > >BB > >_______________________________________________ >Zope maillist - Zope(a)zope.org >http://www.zope.org/mailman/listinfo/zope > >(For developer-specific issues, use the companion list, >zope-dev(a)zope.org - http://www.zope.org/mailman/listinfo/zope-dev ) >

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RE: [Zope] Pluggable brains?
by Alexander Staubo 06 Jul '99

06 Jul '99

Unfortunately, I require a very specific sorting algorithm (I'm sorting threaded discussion topics). I solved this easily by implementing an External Method that essentially copied the list of records into its own list, did the processing, and set the attributes. One curious artifact I noticed was that setattr() on the "r" class instance does _not_ add attributes -- or at least not Zope-accessible attributes -- to the instance. Maybe the instance is an acquisition wrapped and I need to use aq_base? Anyway, I solved this by modfying my SQL Method query, thus: select [...], ThreadLevel = 0 from [...] Having done this, things like setattr(record, 'ThreadLevel', x) now works. -- Alexander Staubo http://www.mop.no/~alex/ "What the hell, he thought, you're only young once, and threw himself out of the window. That would at least keep the element of surprise on his side." --Douglas Adams, _The Hitchhiker's Guide to the Galaxy_ >-----Original Message----- >From: Martijn Pieters [mailto:mj@antraciet.nl] >Sent: 6. juli 1999 01:03 >To: Alexander Staubo; Zope Mailing List (E-mail); 'Phillip J. Eby' >Subject: RE: [Zope] Pluggable brains? > > >At 02:28 05/07/99 , Alexander Staubo wrote: >>Uh, so "pluggable brains" _is_ the ability for Zope to return >records as >>instances of a user-definable class? >> >>It may be a vivid term, but descriptive it ain't. :-) >> >>I have a related question. I need to post-process a query result set >>using Python; I simply want to (a) go through each record and add (or >>set) a column, and (b) reorder the records. Can you give me a simple >>example of how to do this? As far as I can see, records >returned by SQL >>Methods are instances of a special class "r" which descends >from Record, >>Acquisition.Implicit and an optional user-defined class (the >"brain", I >>guess). It seems that when such an instance is created, each column is >>set as an attribute on the instance. If so, I guess I can >simply put the >>records into a list, add my column as a vanilla Python attribute, and >>reorder them as I wish, and then return them for use in DTML? Correct? > >Indeed, just create the 'Brain' (Igor, is that lightning storm >here yet?), >and have it set the attribute. The reordering is trickier. You >could use >the sort attribute of the #in tag. If the order cannot be >derived from any >existing attributes, you just add one to the brain object >(Igor, tweezers >please), that, if sorted on, will create the right order. > >Just put a module in the Extensions directory of your Zope >installation, >let call it MyBrains.py. In it you define your class: > >class SmartRecord: > static_attr = 'A Static Attribute' > > def dyn_attr: > return 'A Dynamic Attribute' > >And on the 'Advanced' tab of your Z SQL Method you specify >this class and >the file it is in ('SmartRecord' and 'MyBrains', or >'MyBrains.py'). From >now on, you can refer to static_attr and dyn_attr as if they >were columns >of the result set. > >PS. Above code is untested, YMMV > >-- >Martijn Pieters, Web Developer >| Antraciet http://www.antraciet.nl >| Tel: +31-35-7502100 Fax: +31-35-7502111 >| mailto:mj@antraciet.nl http://www.antraciet.nl/~mj >| PGP: >http://wwwkeys.nl.pgp.net:11371/pks/lookup?op=get&search=0xA8A3 2149 ------------------------------------------

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Re: [Zope] Help - Database Connection String
by Emmanuel M. Viado 05 Jul '99

05 Jul '99

Date: Sat, 03 Jul 1999 10:05:46 -0600 From: Bill Anderson <bill.anderson(a)libc.org> To: zope(a)zope.org Subject: Re: [Zope] Help - Database Connection String "Bill Anderson" wrote: >The connections string is of the format: > >databasename@hostname username password > >such that: > >test@localhost webmaster letmein > >where: >o test is the name of the database you want to connect to >o localhost because the database is on the same machine >o webmaster is the user set up to access the database from the web >o letmein is the password used by the webmaster user. > >Of course, you would have to have the user set up in mysql as well. > > >Cheers, > >Bill Anderson Thank you Bill. It worked... Best regards...

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ZClasses bug?
by Alex Rice 05 Jul '99

05 Jul '99

Is this a bug or a feature? Only the base ZClasses' property sheets are visible. For instance ZClass A is a base class for ZClass B. I can add property sheets to the ZClass B, but they aren't visible in B instances. However, if I add property sheets in A, they are visible in B instances. It will be very limiting if subclasses cannot have their own property sheets. Alex Rice | alrice(a)swcp.com | http://www.swcp.com/~alrice Current Location: N. Rio Grande Bioregion, Southwestern USA

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ZClasses and methods
by raver＠box.dust.za.net 05 Jul '99

05 Jul '99

Hi! Hope this questions hasn't already been answered on the list. Lately I've been working on a ZClass thingie, but got stuck last night. I've made several methods dtml- and external ones to the class, and want more, mainly a dtml method displaying a form. Now thats no problem, but how shall I address other methods, contained in the class, in the 'action' part of the form? Help is much appreciated! Sture Lygren

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.log parser
by Jens Linge 05 Jul '99

05 Jul '99

Dear all, is there a easy way to parse the Zope server log files? I would like to know: -who downloaded which page (sorted after time, name, etc.) -how long did one user stay in one page I don't know if there is already a module to do this. Thanks. Best wishes. Jens -- Jens Linge linge(a)embl-heidelberg.de EMBL, Nilges Group Meyerhofstr. 1 D-69012 Heidelberg

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RE: [Zope] mySQL image addition
by Michel Pelletier 05 Jul '99

05 Jul '99

> -----Original Message----- > From: Phil Grove [mailto:phil.grove@flg21.com] > Sent: Monday, July 05, 1999 8:59 AM > To: zope(a)zope.org > Subject: [Zope] mySQL image addition > > > hi all, > > has anyone used mySQL to hold a number of images uploaded > using Zope? If so > how can it be done, i have tried using the normal INSERT > statments into a > BLOB field in the database but it only seems to insert a > strange instances > string?? > Given that your image object is named 'image':  will give you the object, in this case, the 'repr' of the object; which in this case is a 'strange instance string'. use:  To get the actual binary contents of the Image. -Michel > Any ideas would be appreciated. > > P. > > --------------------------------------------------------------------- > > Phil Grove phil.grove(a)flg21.com > Web Development 0113 2949494 > flg21 http://www.flg21.com > > --------------------------------------------------------------------- > > > _______________________________________________ > Zope maillist - Zope(a)zope.org > http://www.zope.org/mailman/listinfo/zope > > (For developer-specific issues, use the companion list, > zope-dev(a)zope.org - http://www.zope.org/mailman/listinfo/zope-dev ) >

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Pluggable brains?
by Alexander Staubo 05 Jul '99

05 Jul '99

Could somebody explain the concept of pluggable brains? I have come across this phrase more than once, and I still don't know what it is. Is there any documentation on this? Is it by any chance related to an SQL Method's ability to represent data records with Python classes? -- Alexander Staubo http://www.mop.no/~alex/ "Reality is that which, when you stop believing in it, doesn't go away." --Philip K. Dick

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Zope's storage methods
by Rachid van Es 05 Jul '99

05 Jul '99

Hi everyone, I subscribed a few minutes ago, because of this question: Is database storage the only way in which Zope stores its files? It would explain Zope's sluggishness at times... Is there a way to change this to a "normal" method? Regards, Rachid

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Re: [Zope] ZODB and quotas
by michel＠digicool.com 05 Jul '99

05 Jul '99

Andreas Kostyrka <andreas(a)mtg.co.at> writes: > On 1 Jul 1999 michel(a)digicool.com wrote: > > > It might be possible, note that it would have the same limitations as > > du: it would 'wake up' (activate from the Object Store) all objects to > > guage their size, and then there is the question of previous object > > versions, should you consider the size of previous versions in the > > Object Database? > > Interesting questions. I've been thinking more on the side of the ISP > hosting Zope sites. It's not a question if the site takes 20.0 or 20.1MB, > but it's a difference if it's 20MB or 160MB. > > Previous Versions should probably not count, as they disappear when the > database is packed, right? > Yep. Of course, this is quickly solved by making 'accumlate previous vesions' an option. Someone might want to know the absolute total of all of their object, including previous versions. Taking this discusion a level further, it might even be nice to be able to just 'pack' a subfolder, so someone who has reached their quota can free up some space by cleaning out older versions. Of couse, a more privledged user could override that by packing 'above' their folder. -Michel > Andreas > -- > Win95: n., A huge annoying boot virus that causes random spontaneous system > crashes, usually just before saving a massive project. Easily cured by > UNIX. See also MS-DOS, IBM-DOS, DR-DOS, Win 3.x, Win98.

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