IRC log of #zope3-dev for Tuesday, 2008-01-29

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danielblackburnsrichter: Any chance to look at the example?04:19
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timteIs it possible to have a menu conditionally, if it doesn't already exist?11:10
timte<browser:menu id="buttons" />11:11
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timtethis will crash if this menu is already defined, can I instead just make this being ignored if this menu is already registered by some other package?11:14
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edgordoni want to generate a unique id for each object that is a certain number of characters and uses letters and numbers (something like an sha digest). Any tips on the best way to do this?16:23
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srichteredgordon: an md5 hash is pretty darn safe16:24
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srichteredgordon: Limewire trsuts it for uniqueness16:24
edgordonmake an md5 hash of the object before I add it to the container, and set that as the id?16:25
benjithere are also of course UUIDs16:25
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srichteredgordon: well, if you have objects, I would just use the intid utility or as benji suggested a uuid utility16:35
edgordonyeah, i think uuid is what i am looking for16:35
srichterI know the plone people implemented such a beast already16:35
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J1mTheuni, what is the write skew issue?17:40
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TheuniJ1m: a rather unintuitive issue with MVCC that is caused by computing values derived from other values in the database that are changed in parallel.17:45
Theunihttps://bugs.edge.launchpad.net/zodb/+bug/12143717:45
TheuniI had a very long discussion with Dieter Maurer on this quite a while ago17:46
Theunithere is not existing satisfying and obvious solution to this problem17:46
Theunis/not/no/17:46
Theuni(there are some that are obvious but not satisfying)17:46
Theuniinterestingly you said something about "most databases" and "default configuration"17:47
Theunido you know of any specific databases and configurations that handle this right?17:47
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J1mTheuni, when I get a chance, I'll pay attention and reply. :)18:02
Theuninp18:03
TheuniI really just wrote this mail so the info I got doesn't totally get lost somewhere when beer hits my brain18:04
Theunii should link the posting to the bug18:04
benjiTheuni: http://en.wikipedia.org/wiki/Commitment_ordering and in particular http://en.wikipedia.org/wiki/Commitment_ordering#Multi-version_CO_.28MVCO.29 seem pertinant18:05
Theunigrrr.18:06
* Theuni hates himself when he misses those things in wikipedia18:06
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* benji considers offering Google-fu lessons. ;)18:07
Theunignah. I probably was hindered by having read up too much stuff at once so I probably lost track.18:07
Theunii guess if i'd have googled for commit ordering i'd have had been good18:08
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timteis it possible to reference a template by absolute path in a browser:page directive?18:29
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philiKONtimte: i don't think so. and even if, what good would it be?18:34
timtephiliKON: I could reference templates in other package18:35
timteso I don't need to wrap it with <configure package="...">18:35
timteabsolute package path, not absolute filesystem path18:36
philiKONPageTemplateFile('foo.pt', os.path.dirname(pkg.__file__))18:36
philiKONin zcml you'll have to do the <configure> trick18:37
timteok, thanks18:37
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edgordoni am following the example from philiKON's book on setting up generations, and I have followed it pretty close and doublechecked everything (i think), but when I start up to migrate my db i get an error that SchemaManager object is not callable. has something changed w/ the syntax?18:49
afd_edgordon: zcontact has an example18:52
edgordonthanks18:52
afd_(the entry barier being that you'll need to pull it out from launchpad's bazaar )18:53
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Theuni*phew*19:07
Theunithe egg buildbot is working again, in principle19:07
Theunii upgraded the virtual disk and hope it stays alive now19:07
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Theunii'll try to make it available over the week from the public again19:07
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hazmatif you use z3c.traverser's stackinfo suport to retrieve a published object, does absolute url work properly, or do you need to generate dummy containers with __parent__, __name__ pointers23:00
hazmatsrichter, ^ ;-)23:00
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srichterhazmat: I did not implement the stack info stuff, bernd did that23:15
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