Re: [Zope-dev] Fault tolerance and thread-loss

2000-12-18 Thread Dennis Nichols

At 12/18/00 09:58 PM, Tres Seaver wrote:
I'm not really replying to either question, but guessing at the
underlying cause of the problem:  this smells *exactly* like the
behavior induced by the "multiple PUT/POST" race condition bug,
corrected by Evan Simpson's patched ZServer/HTTPServer.py:

   http://www.zope.org/Members/4am/postfixbug

Or, even more, http://www.zope.org/Members/4am/postbugfix


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Dennis Nichols
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Re: [Zope-dev] extending objectValues() and objectIds() or ?

2000-10-25 Thread Dennis Nichols

Thanks for the advice (below). I added another parameter for meta type and 
everything works great. What's the advantage of using Python Method rather 
than an external method, other than thru-the-web editing? Any disadvantages?

At 10/24/00 06:45 PM, Itamar Shtull-Trauring wrote:
Write a Python Method (install the PythonMethods product first) called say,
publishableObjectValues that does that:

paramself/param

# functions that returns publishable objects
result = []
for o in self.objectValues():
if o.isPublishable(): result.append(o)
return result


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[Zope-dev] extending objectValues() and objectIds() or ?

2000-10-24 Thread Dennis Nichols

I have developed a flock of Python products that have attributes 
'first_date', 'last_date', and 'ok_to_publish' with the intention that 
these attributes will be set by the content managers. Each product also has 
an 'isPublishable' method that returns true if 'ok_to_publish' is true 
_and_ today = 'first_date' _and_ today = 'last_date'. This all works fine 
but I find myself writing DTML in many places to retrieve a list of objects 
with objectValues() and then looping over them making yet another list of 
only the objects that are publishable.

What I would really like is an objectValues() and an objectIds() that 
return only publishable objects/ids. It looks like this could be easily 
accomplished by {tremble} adding an additional parameter to those two 
routines, say chkPub=None so that I could do a call such as 
objectValues('Poll',1) when I wanted just the publishable Poll items 
returned. However...

1. modifying ObjectManager.py doesn't seem like the best move I've ever 
thought of
2. I'm confused about the ObjectManager internals - can I call my 
isPublishable methods on objects that ObjectManager keeps in its lists? How?

I guess a better question, rather than asking about this one possible 
solution, would be:

How can I extend Zope to give me a list of objects qualified by more than 
just the meta_type?

Guidance gleefully gathered. Thanks!

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Dennis Nichols
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