[Zope-dev] Adding and setting properties from a virtual Specialist
Hi,
I have a Specialist ('OrderingEntities') which creates virtual
objects, mapped to existing objects (using ZClass 'Employee') in
another Specialist ('Employees'). I want OrderingEntities to add and
modify a property 'current_order_id' on the Employee objects. I can
get the virtual object to access properties from the real object, but
I can't figure out how to implement the property add/change.
To make things simpler, I added the property current_order_id to the
Employee class, so I can test just modifying this property, leaving
creating it for later.
OrderingEntities has an employeeRack, set to use the Employee class
and to load by accessing attribute current_order_id. The Rack has
this SkinScript:
WITH Employees.getItem(self.id) COMPUTE
original_object=RESULT or NOT_FOUND
WITH self.original_object COMPUTE
current_order_id
WHEN OBJECT ADDED,CHANGED STORE current_order_id USING
self.original_object.manage_changeProperties(current_order_id=self.current_order_id)
Doing dtml-var
"OrderingEntities.getItem(some_id).current_order_id)" shows me the
value of current_order_id of the Employee object some_id. But I can't
figure out how to change the property so it get changed in the
Employee object. dtml-call
"OrderingEntities.getItem(some_id).manage_changeProperties(current_order_id='123')"
does nothing, it doesn't even trigger the WHEN OBJECT CHANGED line
(not that I really expected it to work... this object is virtual, how
can I call changeProperties on it?)
Other than figuring out how to get the change to work, I two more problems:
-Eventually the OrderingEntities Specialist will have several Racks
mapping to several other Specialists, so it will end up returning
different classes. Should I instead create a new ZClass with just the
current_order_id property and use this class in all the virtual Racks?
- How do I add a property to the original object from the virtual
object (assuming I did not add it manually to the Employee class)? Do
I call self.original_object.manage_addProperty(...) from the
SkinScript?
TIA
--
Itai Tavor"Je sautille, donc je suis."
C3Works[EMAIL PROTECTED] - Kermit the Frog
"If you haven't got your health, you haven't got anything"
___
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Re: [Zope-dev] Validation
Brad Clements wrote: I keep making this patch to each Zope release, but would like to talk about a more permanant and "correct" solution. What do others think? Validation as a whole could do with looking at, it's be great if there were hooks to catch validation problems rather than just raising exceptions... cheers, Chris ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Re: [Zope] ANNOUNCE: Zope 2.3.0 alpha 1 released...
Found a bug, I think... when I try to add a property to a PropertyManager (but not a PropertySheet?) I get: Error Type: ImportError Error Value: cannot import name checkValidId Traceback (innermost last): File /opt/Zope-2.3.0a1-src/lib/python/ZPublisher/Publish.py, line 222, in publish_module File /opt/Zope-2.3.0a1-src/lib/python/ZPublisher/Publish.py, line 187, in publish File /opt/Zope-2.3.0a1-src/lib/python/Zope/__init__.py, line 221, in zpublisher_exception_hook (Object: Traversable) File /opt/Zope-2.3.0a1-src/lib/python/ZPublisher/Publish.py, line 171, in publish File /opt/Zope-2.3.0a1-src/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: manage_addProperty) File /opt/Zope-2.3.0a1-src/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: manage_addProperty) File /opt/Zope-2.3.0a1-src/lib/python/OFS/PropertyManager.py, line 318, in manage_addProperty (Object: Traversable) File /opt/Zope-2.3.0a1-src/lib/python/OFS/PropertyManager.py, line 247, in _setProperty (Object: Traversable) ImportError: (see above) []s, |alo + -- Hack and Roll ( http://www.hackandroll.org ) The biggest site for whatever-it-is-that-we-are. http://zope.gf.com.br/lalo mailto:[EMAIL PROTECTED] pgp key: http://zope.gf.com.br/lalo/pessoal/pgp Brazil of Darkness (RPG)--- http://zope.gf.com.br/BroDar ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
RE: [Zope-dev] Re: [Zope] ANNOUNCE: Zope 2.3.0 alpha 1 released...
Found a bug, I think... when I try to add a property to a PropertyManager (but not a PropertySheet?) I get: Error Type: ImportError Error Value: cannot import name checkValidId Thanks - the fix should be checked in shortly... Brian Lloyd[EMAIL PROTECTED] Software Engineer 540.371.6909 Digital Creations http://www.digicool.com ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] python 2.0, windows and zope
Has anyone got python 2.0 working with Zope on windows? Just curious if anyone has any pointers before I start done this (potentially) painful path... -- Andy McKay, Developer. ActiveState. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
RE: [Zope-dev] python 2.0, windows and zope
Ive successfully installed the latest version of zope on windows and have it running my website. http://www.brooklynmedialabs.com . Its actually easier than running it on linux! -josh Has anyone got python 2.0 working with Zope on windows? Just curious if anyone has any pointers before I start done this (potentially) painful path... -- Andy McKay, Developer. ActiveState. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope ) ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] python 2.0, windows and zope
using python 2.0 and not the default python installation? -- Andy McKay, Developer. ActiveState. - Original Message - From: "Josh Zeidner" [EMAIL PROTECTED] To: "Andy McKay" [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Wednesday, December 13, 2000 9:18 AM Subject: RE: [Zope-dev] python 2.0, windows and zope Ive successfully installed the latest version of zope on windows and have it running my website. http://www.brooklynmedialabs.com . Its actually easier than running it on linux! -josh Has anyone got python 2.0 working with Zope on windows? Just curious if anyone has any pointers before I start done this (potentially) painful path... -- Andy McKay, Developer. ActiveState. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope ) ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope ) ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZPatterns: persistant objects hold DataSkin-Items - KeyError: _v_dm_
after one more day of source-code-reading i got that far: When I want to use a Folder /w Customizer (FwCS) I cannot/don't need to use Specialists. i create a FwCS and put my 'Framework' in it. if i want to access (get/new) an object handled by a customizer i can ask FwCS._getDataManagerFor(client,default) for my datamanager (DM) Do I need to implement methods like createItem/retrieveItem/_v_itemConstructor as well or how do i "get" my objects ?? If I have an object whose metatype is handled via customizer/skinscript/sqlmethod it'll probably work managing attributes .. I'm searching for something that handles a newItem(meta_type,key) function that is provided from the FwCS who decides which object-type is created and gets those attributes from the customizer did I get this right so far ?? is there an example those newItem(meta_type,key) - getItem(meta_type,key) ?? thanks Ulrich Eck a) tell my TransactionManager that my attribute "ds_object" is not pickeable (e.g. call it _v_ds_object) and how to know if zope is restarted ?!?!? or b) store this object persistantly in my TO without showing it in the folder-structure but behave like a DSO set/get attributes through Skinscripts Yes. Use a Folder w/Customization Support above your transactions. When you access TO.ds_object, the DataSkin will search for a DataManager and find one in the FwCS, assuming you've configured one. Note that this is mutually exlcusive to using Specialists to store the DataSkins. In the FwCS approach, you configure Customizers for each meta_type of objects you'll be dealing with. You can then give them SkinScript, etc. to configure behaviors. Also, this approach requires use of the ZODB to store at least the "shell" (class reference and ID) of each DataSkin. But since your application is ZODB-dependent already, this is not an issue. Personally, I'd suggest that if you want to take advantage of ZPatterns' database independence, you should instead restructure your app so that your TO's are themselves DataSkins, stored in a Specialist. Right now, you have a very heavy dependence on the ZODB. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZPatterns: persistant objects hold DataSkin-Items - KeyError: _v_dm_
At 06:31 PM 12/13/00 +0100, Ulrich Eck wrote: after one more day of source-code-reading i got that far: When I want to use a Folder /w Customizer (FwCS) I cannot/don't need to use Specialists. Not to store your objects, no. You can still use Specialists to concentrate search methods, constructors, UI snippets, and the like. Typically, in that configuration some of your Specialists may contain (or be) ZCatalogs which index selected objects from your FwCS hierarchy. i create a FwCS and put my 'Framework' in it. if i want to access (get/new) an object handled by a customizer i can ask FwCS._getDataManagerFor(client,default) for my datamanager (DM) Not necessary. If you retrieve your DataSkin as an attribute of its container, the DataSkin __of__ method will automatically find and bind the DataManager (assuming you're not using some class that overrides __of__). Do I need to implement methods like createItem/retrieveItem/_v_itemConstructor as well or how do i "get" my objects ?? Just retrieve the objects from their containers in the normal Zope way. Ditto for creation - use the standard way of constructing objects in an ObjectManager. If I have an object whose metatype is handled via customizer/skinscript/sqlmethod it'll probably work managing attributes .. Yes, it should. Likewise triggers, if you want to set up cataloging triggers. I'm searching for something that handles a newItem(meta_type,key) function that is provided from the FwCS who decides which object-type is created and gets those attributes from the customizer Just use the normal Zope "add list" to create one manually, or call the appropriate constructors (e.g. SomeZClass.createInObjectManager()). is there an example those newItem(meta_type,key) - getItem(meta_type,key) ?? You want examples? You forget, this is ZPatterns. ;) Seriously, look for examples of how to create an object by meta_type in a Zope ObjectManager. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] ZClass registry repair utility
I've written a utility you can use to clean up the global registry of ZClasses. The registry can become corrupt through product upgrades--not ZODB corruption, but missing base classes and so forth. This utility recreates the registry. http://www.zope.org/Members/hathawsh/ZGlobalsRepair It's probably a good idea to run it after a major Zope upgrade. Shane ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] python 2.0, windows and zope
Waffling on to my own posts... but it would seem I have to build Zope from source to get it to use another version of python since the use of python15.dll is entrenched in Zope... All the install scripts seem to be based on unix. Can DC give me a hand here on pointers to how they build it for Windows? -- Andy McKay, Developer. ActiveState. - Original Message - From: "Andy McKay" [EMAIL PROTECTED] To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Wednesday, December 13, 2000 9:21 AM Subject: Re: [Zope-dev] python 2.0, windows and zope using python 2.0 and not the default python installation? -- Andy McKay, Developer. ActiveState. - Original Message - From: "Josh Zeidner" [EMAIL PROTECTED] To: "Andy McKay" [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Wednesday, December 13, 2000 9:18 AM Subject: RE: [Zope-dev] python 2.0, windows and zope Ive successfully installed the latest version of zope on windows and have it running my website. http://www.brooklynmedialabs.com . Its actually easier than running it on linux! -josh Has anyone got python 2.0 working with Zope on windows? Just curious if anyone has any pointers before I start done this (potentially) painful path... -- Andy McKay, Developer. ActiveState. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope ) ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope ) ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope ) ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Adding and setting properties from a virtual Specialist
Hi Itai, "Itai" == Itai Tavor [EMAIL PROTECTED] writes: Itai "OrderingEntities.getItem(some_id).current_order_id)" shows Itai me the value of current_order_id of the Employee object Itai some_id. But I can't figure out how to change the property Itai so it get changed in the Employee object. dtml-call Itai "OrderingEntities.getItem(some_id).manage_changeProperties(current_order_id='123')" Itai does nothing, it doesn't even trigger the WHEN OBJECT Itai CHANGED line (not that I really expected it to work... this Itai object is virtual, how can I call changeProperties on it?) How about 'OrderingEntities.getItem(some_id).propertysheets.TheRightPropertysheet.manage_changeProperties() or you could create an external method to set the property you want... YourExternalMethod( OrderingEntities.getItem(some_id), theValue) where def YourExternalMethod( theObject, theValue): setattr(theObject, 'current_order_id', theValue) I think these could/should work... Itai Other than figuring out how to get the change to work, I two Itai more problems: Itai -Eventually the OrderingEntities Specialist will have Itai several Racks mapping to several other Specialists, so it Itai will end up returning different classes. Should I instead Itai create a new ZClass with just the current_order_id property Itai and use this class in all the virtual Racks? This is what I do in most cases... each rack has different SkinScript to map the attributes of different classes onto the common attribute set of the single Storage class used by all the racks. Itai - How do I add a property to the original object from the Itai virtual object (assuming I did not add it manually to the Itai Employee class)? Do I call Itai self.original_object.manage_addProperty(...) from the Itai SkinScript? I think this should work but it will only add the propertysheet to the instance.. not the class. If the property is completely missing from the original class then it seems to me either there is really no real need to save it there... or the class was incomplete somehow to begin with... and it should be added at the ZClass level.. Just random thoughts... ;-) -steve Itai TIA -- Itai Tavor "Je sautille, donc je suis." C3Works Itai [EMAIL PROTECTED] - Kermit the Frog Itai "If you haven't got your health, you haven't got anything" Itai ___ Zope-Dev Itai maillist - [EMAIL PROTECTED] Itai http://lists.zope.org/mailman/listinfo/zope-dev ** No cross Itai posts or HTML encoding! ** (Related lists - Itai http://lists.zope.org/mailman/listinfo/zope-announce Itai http://lists.zope.org/mailman/listinfo/zope ) ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] zPoPyDA and DB Transactions
I had been using Postgres with the zPyGreSQLDA and recently switched to zPoPyDA for a new project. I noticed that zPoPyDA does not seem to implicitly wrap each zSQL method in a database transaction as zPyGreSQLDA did. Reading the code for zPoPyDA seems to confirm this. Is this behavior by design or a bug or am I missing something? -- | Casey Duncan | Kaivo, Inc. | [EMAIL PROTECTED] `-- ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
RE: [Zope-dev] python 2.0, windows and zope
Waffling on to my own posts... but it would seem I have to build Zope from
source to get it to use another version of python since the use of
python15.dll is entrenched in Zope... All the install scripts seem to be
based on unix.
Can DC give me a hand here on pointers to how they build it for Windows?
Hi Andy -
We have a little python script that creates NMAKE compatible
makefiles out of the Setup files. I've attached it + the .bat
file we use to run it. Hope this helps!
Brian Lloyd[EMAIL PROTECTED]
Software Engineer 540.371.6909
Digital Creations http://www.digicool.com
'''Build t Python extension using Visual C++ 40
This script generates and runs a series of .mak and .def
files for extensions defined in a Setup file.
Note that you must have set up your environment to run VC command-line
ustilities. This can be done by running the vcvar32.bat file in the
VC++ bin directory.
Usage: python ext.py [options]
Options:
-r Run nmake to build release version
-d Run nmake to build debug version
-c If used with -r or -d, runs nmake on clean target.
-p Specify location of Python source tree. Default
is ..\.. (assuming you are in Extensions/some_name)
The script reads a file named "Setup" in the current directory. The
Setup file has lines that describe the contents of an extension.
Here\'s an example:
ExtensionClass ExtensionClass.c
Acquisition Acquisition.c
Note that I\'ve intented for readability. The Setup file shouldn\'t
be indented. Basically, the first token on the line is the module
name, and the second token on the line is the sorce file. Additional
source files and include directories may be included as well, as in:
pyexpat pyexpat.c -DXML_NS -Iexpat/xmlparse -Iexpat/xmltok expat/xmlparse/xmlparse.c
expat/xmlparse/hashtable.c expat/xmltok/xmlrole.c expat/xmltok/xmltok.c
''' # '
import sys, getopt, os, string, regex
def die(m):
print m
print
print __doc__
sys.exit(1)
def setup():
poptlist,pargs=getopt.getopt(sys.argv[1:],'p:drcI:o:h')
if opt(poptlist,'h'): print __doc__
if poptlist==[('-h','')]: sys.exit(0)
pargs and die('Unrecognized arguments: %s', string.join(args))
ext_regex = regex.compile('\([a-z][a-z0-9_]*\)[ \t]'
'\([.a-z][./a-z0-9_]*[.]c\)[ \t\n]',
regex.casefold)
for line in open('Setup').readlines():
if ext_regex.match(line) = 0:
sargs=string.split(line)
module=sargs[0]
src=sargs[1]
if src[:2]=='./': continue
soptlist, sargs = getopt.getopt(sargs[2:],'I:D:')
filter(lambda a: a[:1]=='-' or string.find(a,'.') 0,
sargs) and die('Invalid arguments in Setup file: %s' %
string.join(sargs))
sargs=map(lambda a: string.replace(a, '/','\\'), sargs)
simple(module,poptlist+soptlist, sargs)
main=setup
def filebase(o,
splitext=os.path.splitext,
split=os.path.split):
return splitext(split(o)[1])[0]
def simple(module,optlist,others):
tdef,tmak=templates()
pyhome=opt(optlist,'p')
pyhome=pyhome and pyhome[0] or '..\\..'
cfg=opt(optlist,'d') and 'Debug' or 'Release'
parms={'module': module, 'pyhome':pyhome, 'cfg': cfg}
parms['includes']=string.join(
map(lambda i: '/I "%s"' % i,
opt(optlist,'I')) +
map(lambda i: '/D "%s"' % i,
opt(optlist,'D'))
, ' ')
parms['other_clean_release']=string.join(
map(lambda o:
'\n\t-@erase ".\\Release\\%s.obj"' % filebase(o),
others),'')
parms['other_clean_debug']=string.join(
map(lambda o:
'\n\t-@erase ".\\Debug\\%s.obj"' % filebase(o),
others),'')
parms['other_rule']=string.join(
map(lambda o:
'"$(INTDIR)\%s.obj" : .\%s $(DEP_CPP_MOD) "$(INTDIR)"\n'
'\t$(CPP) $(CPP_PROJ) .\%s '
% (filebase(o), o, o),
others),'\n')
parms['other_link']=string.join(
map(lambda o:
'\n\t"$(INTDIR)\%s.obj" \\' % filebase(o),
others),'')
open(module+'.def','w').write(tdef % parms)
open(module+'.mak','w').write(tmak % parms)
cfg_=' CFG="%s - Win32 %s"' % (module,cfg)
os.system('nmake /nologo /f %s.mak%s' % (module,cfg_))
os.system('copy %s\%s.dll %s.pyd' % (cfg,module,module))
if opt(optlist,'c'):
os.system("nmake /f %s.mak%s CLEAN" % (module,cfg_))
def opt(optlist,name):
l=filter(lambda t, name='-'+name: t[0]==name, optlist)
return map(lambda t: t[1], l)
def templates():
tdef = '''EXPORTS
init%(module)s
'''
tmak = '''# Microsoft Developer Studio Generated NMAKE File, Format Version 4.00
# ** DO NOT EDIT **
# TARGTYPE "Win32 (x86) Dynamic-Link Library"
Re: [Zope-dev] python 2.0, windows and zope
I think thats just the fella I need! Thanks... Will let you know progress -- Andy McKay, Developer. ActiveState. - Original Message - From: "Brian Lloyd" [EMAIL PROTECTED] To: "Andy McKay" [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Wednesday, December 13, 2000 11:14 AM Subject: RE: [Zope-dev] python 2.0, windows and zope Waffling on to my own posts... but it would seem I have to build Zope from source to get it to use another version of python since the use of python15.dll is entrenched in Zope... All the install scripts seem to be based on unix. Can DC give me a hand here on pointers to how they build it for Windows? Hi Andy - We have a little python script that creates NMAKE compatible makefiles out of the Setup files. I've attached it + the .bat file we use to run it. Hope this helps! Brian Lloyd[EMAIL PROTECTED] Software Engineer 540.371.6909 Digital Creations http://www.digicool.com ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
[Zope-dev] Announcing ZODB-Corba code release
Here is the first release of code that exposes a ZODB database through CORBA (omniORB). The code is functioning, the docs are sparse, and it should work on your machines. ;-) I am only going to be in town for the next two days, then I will be unavailable until Jan 1. See http://www.zope.org/Members/jheintz/ZODB_CORBA_Connection to download the code. It's not perfect, but it works for me. Enjoy, John -- .. . . . . . . . . . . . . . . . . . . . . . . . John D. Heintz | Senior Engineer 1016 La Posada Dr. | Suite 240 | Austin TX 78752 T 512.633.1198 | [EMAIL PROTECTED] w w w . d a t a c h a n n e l . c o m ___ Bug reports, feature requests, etc. go in the ZEO Tracker: http://www.zope.org/Products/ZEO/Tracker Conversations etc. can take place in the Wiki: http://www.zope.org/Products/ZEO/Wiki Zope-ZEO maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-zeo ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Adding and setting properties from a virtualSpecialist
Steve Spicklemire wrote: Hi Itai, "Itai" == Itai Tavor [EMAIL PROTECTED] writes: Itai "OrderingEntities.getItem(some_id).current_order_id)" shows Itai me the value of current_order_id of the Employee object Itai some_id. But I can't figure out how to change the property Itai so it get changed in the Employee object. dtml-call Itai "OrderingEntities.getItem(some_id).manage_changeProperties(current_order_id='123')" Itai does nothing, it doesn't even trigger the WHEN OBJECT Itai CHANGED line (not that I really expected it to work... this Itai object is virtual, how can I call changeProperties on it?) How about 'OrderingEntities.getItem(some_id).propertysheets.TheRightPropertysheet.manage_changeProperties() Gr now I'm really annoyed. Why didn't I try that? So obvious. Thanks. Itai Other than figuring out how to get the change to work, I two Itai more problems: Itai -Eventually the OrderingEntities Specialist will have Itai several Racks mapping to several other Specialists, so it Itai will end up returning different classes. Should I instead Itai create a new ZClass with just the current_order_id property Itai and use this class in all the virtual Racks? This is what I do in most cases... each rack has different SkinScript to map the attributes of different classes onto the common attribute set of the single Storage class used by all the racks. Sounds like a good plan, think I'll adopt it. Itai - How do I add a property to the original object from the Itai virtual object (assuming I did not add it manually to the Itai Employee class)? Do I call Itai self.original_object.manage_addProperty(...) from the Itai SkinScript? I think this should work but it will only add the propertysheet to the instance.. not the class. If the property is completely missing from the original class then it seems to me either there is really no real need to save it there... or the class was incomplete somehow to begin with... and it should be added at the ZClass level.. Say I got several Participants, and some of those need to be able to place orders. I create the Specialist OrderingEntities to implement the role of 'someone who places orders'. From what I understand about using Specialists to extend a class behavior, this Specialist should add the properties it needs to track orders with to the Participant classes - I should not have to go in to every Participant class and add the property to it, because those classes don't know and don't care that they might be used in this role. Am I wrong in this? Otherwise, the only other way to track properties for this role would be to physically store a new object on the OrderingEntities Rack for every Participant class accessed, but what's the point in that, if I can simply add the property to the original class? Making small steps up the ZPatterns mountain (and too many of them backwards), Itai -- Itai Tavor"Je sautille, donc je suis." C3Works[EMAIL PROTECTED] - Kermit the Frog "If you haven't got your health, you haven't got anything" ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Adding and setting properties from a virtualSpecialist
Hi Itai, "Itai" == Itai Tavor [EMAIL PROTECTED] writes: Itai Say I got several Participants, and some of those need to be Itai able to place orders. I create the Specialist Itai OrderingEntities to implement the role of 'someone who Itai places orders'. From what I understand about using Itai Specialists to extend a class behavior, this Specialist Itai should add the properties it needs to track orders with to Itai the Participant classes - I should not have to go in to Itai every Participant class and add the property to it, because Itai those classes don't know and don't care that they might be Itai used in this role. Am I wrong in this? Otherwise, the only Itai other way to track properties for this role would be to Itai physically store a new object on the OrderingEntities Rack Itai for every Participant class accessed, but what's the point Itai in that, if I can simply add the property to the original Itai class? No.. you're right here. I've never used property sheets in this way, just because it's seemed too much trouble to check for existence, then add if necessary... etc. If I need to have a property set in an instance... I just set it, using an external method. (Or I add it at the ZClass level.) It's important to be careful though... if there is already a property with that name there could be a clash. Obviously application integration needs to be done with full awareness of the different attributes used by each component. Itai Making small steps up the ZPatterns mountain (and too many Itai of them backwards), Yup.. me too. ;-) But it's better than sticks and bones.. take care, -steve Itai Itai -- Itai Tavor "Je sautille, donc je suis." C3Works Itai [EMAIL PROTECTED] - Kermit the Frog Itai "If you haven't got your health, you haven't got anything" ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Validation
Chris Withers wrote: Brad Clements wrote: I keep making this patch to each Zope release, but would like to talk about a more permanant and "correct" solution. What do others think? Validation as a whole could do with looking at, it's be great if there were hooks to catch validation problems rather than just raising exceptions... Along with the TTW ability to define new variable types to be validated (and their validation methods), such as :email, :12hTime, :24hTime, :URL, :fqURL (fully qualified URL), and others. Michael Bernstein. ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] ZPatterns: persistant objects hold DataSkin-Items - KeyError: _v_dm_
Not necessary. If you retrieve your DataSkin as an attribute of its container, the DataSkin __of__ method will automatically find and bind the DataManager (assuming you're not using some class that overrides __of__). ok i've gone all through the source searching for a method to get an object of a meta-type with key ... when I call FwCS.getOb(id) then i get back an object with ??meta-type?? if I have different Customizers all serving one meta-type ??? example: I Have a Customizer for an EventClass and another for LocationClass they're both stored in an database using an unique int as PrimaryKey when i call getOb(1) how should my FwCS know which one it should give back ?? Just retrieve the objects from their containers in the normal Zope way. Ditto for creation - use the standard way of constructing objects in an ObjectManager. Just use the normal Zope "add list" to create one manually, or call the appropriate constructors (e.g. SomeZClass.createInObjectManager()). Yes, if i create an object and call FwCS._setObject(id,ob) the FwCS can choose the right place to store the object e.g. if properly configured using a Customizer with SSMethod is there an example those newItem(meta_type,key) - getItem(meta_type,key) ?? You want examples? You forget, this is ZPatterns. ;) Seriously, look for examples of how to create an object by meta_type in a Zope ObjectManager. just the one snippet of code which how to serve the problem i described .. thanks again for your appropriate help Ulrich Eck ___ Zope-Dev maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope )
