- Zope-Dev - Zope lists

NT Service
by htrd90＠zepler.org 28 Mar '99

28 Mar '99

I am looking to run Zope as an NT service, but ideally without IIS. Has anyone had ZopeHTTPServer running as a service? or is there a better way?

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Pickling class dictionaries?
by Stefan Franke 26 Mar '99

26 Mar '99

How is the dictionary of a Products class object treated by BoboPOS? I'm thinking of using an existing class, which keeps an inventory of its instances (I'm sure there was a pattern name for this...) as a basis for a Product, and wonder if it is feasible. Python's std lib documentation is a little ambigous about this: First, it says "Note that when class instances are pickled, their class's code and data are not pickled along with them. Only the instance data are pickled." Later then: "The following types can be pickled: [...] - classes that are defined at the top level in a module " Can anyone light things up? Stefan

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RE: [Zope-dev] New Counter Product
by Paul Everitt 26 Mar '99

26 Mar '99

Scott wrote: > Is Zope 2 going to be a complete rewrite? If so then maybe we should > discusss an event model et al... No, it won't be a complete rewrite. Zope2 is really just a milestone of when a number of things will have happened -- primarily, providing concurrency via: o concurrent publishing via ZServer o concurrent database storage via ZODB3 o ensuring the base objects in Zope are concurrency-friendly When these things happen, Zope2 is done. --Paul

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RE: [Zope-dev] CVS updating an existing setup - will it trash the DB?
by Paul Everitt 26 Mar '99

26 Mar '99

Phil wrote: > You might want to try it in a separate dir before upgrading, > myself and at > least one other has reported problems with the latest cvs. Well stated. Doing a CVS checkout is obviously a perfectly safe activity -- you'll just get a bunch of code in a directory different from your live app. You can then make areas to work in, browse the code, look at the CVS logs, etc. Its only when you connect this code to your existing setup that you need to be careful. --Paul

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CVS updating an existing setup - will it trash the DB?
by Tony McDonald 26 Mar '99

26 Mar '99

Well, the title says everything really! (I'm strangely reluctant to try this out on my working system for some reason....) ta tone ------ Dr Tony McDonald, FMCC, Networked Learning Environments Project The Medical School, Newcastle University Tel: +44 191 222 5888 Fingerprint: 3450 876D FA41 B926 D3DD F8C3 F2D0 C3B9 8B38 18A2

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RE: [Zope-dev] New Counter Product
by Paul Everitt 25 Mar '99

25 Mar '99

Martijn wrote: > That would be something for a new Event structure in Zope. I > think there > are already too many different notification calls... Correct on both counts. > A Event handling mixin would be nice... you know, registering > which Events > are available on a given object, registering of event > listeners, standards > towards canceling events.... Are there any ideas/plans on this DC? Yes, this had been discussed back in the Bobo/Principia days but nothing ever came of it. --Paul

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RE: [Zope-dev] New Counter Product
by Paul Everitt 25 Mar '99

25 Mar '99

Michel wrote: > Howard wrote: > > 1. How can I create a variable within a Product that will not be > > persistent (i.e. will not be written to disk)? > > > Prefix your variable name with _v_. If you don't want the > attribute foo > to be persistent, call it _v_foo. But alas, there's a dark side to this. If you're object gets swapped out by the Zope cache manager, splat, there goes the updates since your last change. Presumably it wouldn't be as it would be getting used a lot. There is a way to make your objects "sticky", i.e. they won't be deactivated. But Jim isn't comfortable documenting it. Sticky appears to be the operative term here... --Paul

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New Counter Product
by Shaw, Howard 25 Mar '99

25 Mar '99

Well, it is basically finished and working, combining a visible Product interface and a counter tag... But, overriding __setstate__, removing the temporary entry from the state, and called Persistent.__setstate__, while generating no errors, fails to prevent the temporary entry from being written into the database. Please help, I need two answers! 1. How can I create a variable within a Product that will not be persistent (i.e. will not be written to disk)? 2. What function is called at normal shutdown? I need to call a function at shutdown to move the current value from temp to real. Note: The counter is usable as is, so if the list members think that Paul's now repudiated fear of constant disk growth is a non-issue, I could drop the temporary variable, and just keep the advantages of the interface, and the potential for an SQL based backend whilst keeping the same front-end. Thanks again. Howard C. Shaw III Programmer/SysAdmin St. Thomas High School

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Announcing FAQ 0.2.3
by Martijn Faassen 25 Mar '99

25 Mar '99

Hi there, Though the ZDP FAQ hasn't moved at the relentless pace it did before this week, there's still a new version of the FAQ at zdp.zope.org. It's a fairly minor change, but you might find some things that are useful to you. Of course, if you haven't seen it yet, go rush over! Happy Zoping, Martijn

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New Counter Product
by Shaw, Howard 25 Mar '99

25 Mar '99

Here is the updated Counter Product. This contains two classes, one which provides a visible Counter Product which can be added as an object, and which has Security options, and a new tag which provides a means of accessing the Counter Product. Note: the tag should be able to access ANY object which possesses a getCount() and a incrementCount(md) where md==_. So an SQLCounter Product which stores its numbers in an SQL database should be able to use the same tag structure. Since it passes md into the incrementCount, the Product is free to store as much or as little of the REQUEST as it chooses. My product stores only the IP address, and only under proper conditions. The tag structure is described in the CounterTag.py source file, and examples are given. I hope this is useful to someone. <<Counter.tar>> Howard C. Shaw III Programmer/SysAdmin St. Thomas High School

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