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| zenwryly | Say I have a persistent component registered as an adapter in a PersistentComponents site manager. Is it sufficient to just delete the component or do I need to unregister it as an adapter first | 02:42 |
|---|---|---|
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| philiKON | zenwryly: you need to unregister it at the same time as well, but usually that's automatically done by an IObjectRemovedEvent subscriber | 03:25 |
| zenwryly | philiKON: what are the conditions are on that "usually" | 03:25 |
| zenwryly | philiKON: what if the object isn't in the OFS | 03:26 |
| philiKON | in a regular zope 3 | 03:26 |
| philiKON | well, it all depends on if you're sending an IOBjectRemovedEvent for it | 03:26 |
| philiKON | if you do, you're all set | 03:26 |
| zenwryly | ah, I see | 03:27 |
| zenwryly | so all I have to do is notify | 03:27 |
| zenwryly | cools | 03:27 |
| zenwryly | thanks | 03:27 |
| philiKON | (note that IObjectRemovedEvent implies that th object is stored in a container and containers typically send this event themselves in __delitem__) | 03:27 |
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| zenwryly | philiKON: well the utility containing the just subclasses OOBTree | 03:28 |
| philiKON | that's not really a containe | 03:28 |
| zenwryly | I suppose I should make it a proper container | 03:28 |
| philiKON | that would be a solution | 03:28 |
| philiKON | use BTreeContainer | 03:29 |
| zenwryly | philiKON: got an import path for that? | 03:29 |
| philiKON | zope.app.container.btree | 03:30 |
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| zenwryly | thanks! | 03:35 |
| philiKON | np | 03:37 |
| zenwryly | oh wait, if my utility subclasses BTreeContainer, will all the events work if the utility was instantiated by the GS persistent components handler? | 03:37 |
| zenwryly | I know, not Z3 | 03:37 |
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| philiKON | zenwryly: yes | 04:00 |
| philiKON | zenwryly: but note that in a standard zope 2 installation the events won't be subscribed to | 04:01 |
| philiKON | you might have to register these yourself | 04:01 |
| philiKON | what i said above is in that form only true for zope 3 | 04:01 |
| zenwryly | ah, ok, thanks for the info | 04:01 |
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| baijum | Any one with administrive access to zope.org mailing list here ? I think spam filtering is not working .. | 07:57 |
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| baijum | philiKON, ayt ? | 08:57 |
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| baijum | dobee, I have found similar fixes for this issue recently commited : http://www.zope.org/Collectors/Zope3-dev/760 | 09:18 |
| dobee | baijum: why do a cleanup if not testing? | 09:19 |
| dobee | i thought it is just for testing | 09:19 |
| dobee | ok, if the package only needs that function for testing | 09:20 |
| baijum | yes, I think it's for testing, can you fix it ? | 09:20 |
| dobee | i always make that cleanup in packages optional | 09:20 |
| dobee | i just do a pass in the except | 09:20 |
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| baijum | I have given that solution in a comment there | 09:21 |
| * baijum is bit busy today, will do some eggification in evening | 09:23 | |
| dobee | ok | 09:24 |
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| baijum | Hi dobee, how is going on eggification and buildoutification ? | 14:26 |
| dobee | hi baijum currently i am stucked with an odd problemm ... | 14:27 |
| dobee | if i buildout zope.formlib it does not try to fetch zope.app | 14:27 |
| dobee | but if in a package that requires zope.formlib it does | 14:27 |
| dobee | it seems that if i have this fixed zope.app.zcmlfiles should work | 14:28 |
| dobee | that is the biggest part | 14:28 |
| baijum | removed cached old zope.app from eggs dir ? | 14:28 |
| dobee | yes | 14:29 |
| dobee | btw my current working packages | 14:29 |
| dobee | http://zope3.pastey.net/9393 | 14:29 |
| baijum | In morning I asked about http://www.zope.org/Collectors/Zope3-dev/760 , I am going to commit it, is it ok? | 14:29 |
| dobee | baijum: i only use pass in the except, | 14:30 |
| dobee | i dunno why we should cleanup if it is no test | 14:31 |
| baijum | same thing (use pass in except) I am going to do in zope.component.globalregistry | 14:31 |
| * baijum going to blog about http://wiki.zope.org/zope3/ZopeComponentArchitecture later tonight | 14:32 | |
| * baijum searching for other projects which uses zope.component | 14:33 | |
| baijum | dobee, check whether there is any typo in setup.py of zope.formlib, I cann't think of any other reason for not fetching zope.app | 14:35 |
| * dobee wonders why it is working in the buildout of zope.formlib | 14:36 | |
| baijum | dobee, let's keep download.zope.org/distribution as find-links option ? | 14:41 |
| baijum | or are you going to add zope.app packages to PyPI soon? | 14:42 |
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| dobee | i talked with fred abuout this, and we came to the point, that it is not so good, because it overrides your default.cfg | 14:42 |
| dobee | baijum: i will upload source distributions to download.zope.org | 14:43 |
| baijum | dobee, ah! ok, that's good. | 14:43 |
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| baijum | dobee, I am getting a test failure in trunk: http://zope3.pastey.net/9406 | 15:39 |
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| dobee | is that file generated? | 15:41 |
| dobee | /mbaiju/wa/Zope3trunk/zopeskel/etc/package-includes/exception-ftesting.zcml | 15:41 |
| baijum | yes | 15:42 |
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| baijum | there is a SETUP.cfg in src/zope/app/exception/browser/SETUP.cfg | 15:44 |
| dobee | ups, i gonna fix this | 15:44 |
| baijum | ok | 15:45 |
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| dobee | baijum: should be fixed | 15:47 |
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| baijum | dobee, your fix introduce another issue | 16:14 |
| baijum | ZopeSAXParseException: File "/mbaiju/wa/Zope3trunk/zopeskel/etc/package-includes/exception-ftesting.zcml", line 4.4, unbound prefix | 16:15 |
| dobee | grr | 16:15 |
| dobee | baijum: sorry now it should be fixed for real | 16:16 |
| dobee | we need to get away from that ftesting include stuff | 16:16 |
| dobee | it makes no sense | 16:16 |
| dobee | if we use layers | 16:16 |
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| baijum | dobee, I think ftesting slugs from SETUP.cfg can be removed (but other slugs are required until we stop using zpkg) | 16:18 |
| dobee | +1 | 16:18 |
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| * baijum is motivated by dobee's commits | 16:53 | |
| baijum | dobee, tell me two packages which I can buildoutify now ? | 16:54 |
| dobee | baijum: zope.app.boston | 16:54 |
| dobee | you will need viewlet stuff etc | 16:55 |
| baijum | ok I will start with zope.app.boston now | 16:55 |
| dobee | or any not in http://zope3.pastey.net/9413 baijum | 16:55 |
| baijum | ok | 16:56 |
| faassen | you guys are on a roll with this. :) | 16:56 |
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| baijum | faassen, I had stopped eggification with zope.app egg, but now ... after dobee's works I thought just to help ... | 17:00 |
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| baijum | faassen, have seen my comments on GSoC proposal for "Run Zope 3 using Pythion 2.5" ? | 17:01 |
| * baijum think mentors required another mailing list for discussion | 17:02 | |
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| baijum | dobee, so we are removing find-links from buildout.cfg and tests_require from setup.py ? | 17:10 |
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| dobee | baijum: yes | 17:11 |
| benji | tests_require doesn't really work | 17:11 |
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| faassen | baijum: you placed your comments in the google app? | 17:27 |
| baijum | faassen, yes | 17:28 |
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| baijum | faassen, it is about running Zope 2 using Python 2.5 | 17:31 |
| baijum | should we extend the proposal for that ? | 17:31 |
| faassen | baijum: looking it up. just read your comment on the ZPT doc project, good of you to dig that google quote up. | 17:31 |
| faassen | baijum: that clarifies matters. | 17:31 |
| baijum | faassen, ok | 17:32 |
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| faassen | baijum: looking at the python 2.5 project next. | 17:34 |
| baijum | faassen, there is 6 negative grades for ZPT doc project, let's make it ineligible ? | 17:35 |
| * baijum think may we require a private list for these kind of discussion... | 17:36 | |
| baijum | may be | 17:36 |
| faassen | baijum: I think it's fine to leave it as it is for now. | 17:37 |
| faassen | baijum: it's not likely to get accepted as it's below the line anyway. | 17:37 |
| faassen | baijum: we'll just leave this as a record of the learning process. | 17:37 |
| baijum | faassen, ok | 17:37 |
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| faassen | baijum: responded on the 2.5 porting issue. | 17:57 |
| faassen | baijum: I agree that including Zope 2 would make the scope too wide. | 17:57 |
| faassen | baijum: I just want us to take steps to minimize the risk that Zope 2 and Zope 3 are stuck with different Python versions. | 17:57 |
| faassen | baijum: so ideally there's at least some exploration of zope 2 issues at well, resulting in a plan or a report, and maybe if we're lucky some changed code. :) | 17:58 |
| baijum | faassen, ok, I will look into that, thanks ! | 18:05 |
| twcook | I posted a question re: Zope3 interfaces in #zope earlier. No takers. Should I repost here? | 18:06 |
| timte | sure | 18:07 |
| twcook | (10:56:50 AM) twcook: When creating interfaces for Zope3 -- I create an interface for an abstract class -- Do I recreate the attributes/methods in subclasses or do I somehow indicate that the sub-interfaces implements the abstract (class) interface? | 18:07 |
| twcook | (10:57:40 AM) twcook: Do I recreate the attributes/methods in subclasses -- should read: Do I recreate the attributes/methods in the subclass interfaces | 18:07 |
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| faassen | twcook: so you have an interface for an abstract class.. | 18:10 |
| twcook | yep | 18:10 |
| faassen | twcook: and you use implements(ISomeInterface) in that class | 18:10 |
| faassen | twcook: and then you have subclasses for that class, that inherit from it. | 18:10 |
| faassen | twcook: correct so far? | 18:10 |
| twcook | the code WILL, yes... however, my intent was to create all interfaces according to the UML before writing code | 18:11 |
| faassen | twcook: so what is your question? | 18:11 |
| twcook | correct so far | 18:11 |
| faassen | twcook: anyway, presumably your abstract class indeed implements that interface, right? | 18:12 |
| twcook | how in the "interfaces for the subclasses" do I (or do I even need to) indicate that that the subclasses will need to implement those attributes & methods from the superclass | 18:13 |
| twcook | the abstract class is only abstrct ight? So is there a need to actually CODE the abstract class? | 18:13 |
| twcook | Shouldn't those implementations only exist in the concrete classes? | 18:14 |
| faassen | twcook: why do you have an abstract base class without any actual code? | 18:15 |
| faassen | twcook: I mean, what's the point of that? | 18:15 |
| faassen | twcook: I can think of a point of it in, say, C++, as you don't have interfaces. | 18:15 |
| faassen | twcook: but normally an abstract base class has some code, and just leaves *some* methods not implemented and up to the subclass. | 18:15 |
| twcook | In the UML you represent attributes and methods that are needed in several subclasses | 18:16 |
| faassen | twcook: if you just have an interface and concrete classes with very different implementations that don't share a thing, you'd just say those two classes implement the interface, both. | 18:16 |
| faassen | well, don't you have a way to create interfaces in UML? | 18:16 |
| faassen | what you seem to be doing in UML is in effect coming up with an interface and putting it in the base class. | 18:17 |
| twcook | Ok. My question is how to say so in the interface. Not in the classes themselves | 18:17 |
| faassen | twcook: well, your interface specifies the API a class needs to implement. | 18:17 |
| faassen | twcook: so your classes would both say, I implement that interface. | 18:17 |
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| faassen | twcook: if you need to share some implementation between the classes, then you might want to consider sharing a base class that's partially abstract. | 18:17 |
| twcook | partially abstract -- <g> | 18:18 |
| faassen | twcook: and in that case, if all subclasses are intended to implement that interface anyway, you can say implements(IMyInterface) on the base class and then the subclasses will inherit this. | 18:18 |
| faassen | twcook: a partially abstract class is .. | 18:18 |
| faassen | class Foo: | 18:18 |
| faassen | def mymethod(self): | 18:18 |
| faassen | return self.getNumber() * 10 | 18:18 |
| faassen | def getNumber(self): | 18:18 |
| faassen | raise NotImplementedError | 18:18 |
| faassen | subclasses will need to implement getNumber. | 18:19 |
| twcook | Ok.. I got it. Thanks | 18:19 |
| faassen | that's the concept I know from C++ of abstract base class. | 18:19 |
| faassen | a class that has one or more pure virtual member functions. :) | 18:19 |
| faassen | i.e. a class that it doesn't make any sense to make instances of. | 18:19 |
| faassen | you only make instances of its subclasses. | 18:19 |
| faassen | I don't know what the terms means in UML so I'm at a loss there. | 18:20 |
| faassen | I'm just trying to sketch out what happens with interfaces. | 18:20 |
| timte | faassen: Foo is an abstract class | 18:20 |
| faassen | okay. | 18:20 |
| pjesi | faassen: is this how you write abstract classes in Python? | 18:20 |
| faassen | timte: yeah, I'd call that an abstract base class. I used 'partially' as I got conufsed by twcook's confusion. :) | 18:21 |
| faassen | pjesi: that's how I'd write one, yeah. | 18:21 |
| faassen | pjesi: it doesn't stop you from instantiating anything, it's just if you instantiate it and try to use it, you'll get a lot of NotImplementedErrors. :) | 18:21 |
| twcook | I appreciate it. My quandry i that want to translate the UML into interfaces. Publish them as an open source project and get help doing the coding... THerefore I wanted a way to insure that developers did not have to go back to the UML to know what inherited from what. | 18:21 |
| faassen | it's basically just a tool for implementation inheritance. | 18:21 |
| faassen | twcook: well, you can do interface inheritance. | 18:22 |
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| faassen | twcook: you can inherit between interfaces, you can inherit between classes, and you can have classes say 'I implement this interface'. how one expresses this in UML that then can be translated to sensible python code I don't know. :) | 18:22 |
| faassen | class inheritance implies interface inheritance. | 18:22 |
| twcook | but I can't : IMyInterface2(Interface, MyInterface2) can I? | 18:23 |
| faassen | if you have.. | 18:23 |
| faassen | class IAnimal(Interface): | 18:23 |
| faassen | def makeSound(): | 18:23 |
| faassen | "Sound the animal makes" | 18:23 |
| faassen | class IChimp(IAnimal): | 18:23 |
| faassen | def doTheChimpThing(): | 18:23 |
| faassen | "Something :)" | 18:23 |
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| faassen | then you're inheriting interfaces. | 18:23 |
| faassen | if you say something needs to implement IChimp, it'll need to implement IAnimal as well. | 18:24 |
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| twcook | Ok, so then IChim(IAnimal) makes IChimp an interface as if I had directly inherited from Interface? | 18:24 |
| baijum | twcook, yes | 18:26 |
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| twcook | Gee thanks. That solves my whole confusion! <vbg> | 18:26 |
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| dobee | benji: shouldn i be able to scp to download.zope.org:/distribution/ ? | 19:28 |
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| benji | dobee: hmm, don't know; you want to grab all the current eggs? | 19:29 |
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| dobee | benji: i want to upload my dist files | 19:29 |
| faassen | dobee: I recall the path on zope.org was different somehow, but what it was I cannot recall right now. :) | 19:29 |
| faassen | dobee: maybe benji can log in and do a pwd. :) | 19:29 |
| dobee | do i have to use sftp? i cant remember | 19:30 |
| dobee | i think it was scp | 19:30 |
| faassen | I think it was scp. | 19:30 |
| faassen | I'd have remembered sftp. I did it once but it was quite a while back. | 19:30 |
| benji | I think the buildout uses SFTP to retrieve them, but scp is used to upload them | 19:31 |
| faassen | dobee: can't find the mailing message very quickly. | 19:31 |
| dobee | me too | 19:31 |
| faassen | benji: it used to have just an http way of downloading them but that changed, I guess. :) | 19:31 |
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| dobee | ok so this will happen tomorrow :-( there are 90 dists, and i have to leave now benji | 19:33 |
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| Undertec | +r | 19:54 |
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