Thread: [Pyobjc-dev] Problems implementing a protocol
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From: Mani G. <ma...@tu...> - 2010-02-19 18:55:08
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Hello, This may or may not be a bridge bug, but either way I'll post it here and hopefully someone will be able to help. I am implementing a Python class (note: not a subclass of NSObject) that fulfills the ISyncSessionDriverDataSource protocol (http://developer.apple.com/mac/library/DOCUMENTATION/Cocoa/Reference/ISyncSessionDriverDataSource_Protocol/Reference/Reference.html). With this implementation passed in to the session driver, I've confirmed that functions in my class returning various Cocoa objects (NSDictionary, NSArray, NSURL) are being invoked and handled correctly. However, I am stuck on the preferredSyncModeForEntityName_() implementation. It is supposed to return type ISyncSessionDriverMode (http://developer.apple.com/mac/library/DOCUMENTATION/Cocoa/Reference/ISyncSessionDriverDataSource_Protocol/Reference/Reference.html#//apple_ref/doc/c_ref/ISyncSessionDriverMode), an enum. My code simply returns an enum value: def preferredSyncModeForEntityName_(self, entity): logging.debug('DRIVER requesting preferred sync mode') if self.refresh is True: logging.debug('returning ' + str(ISyncSessionDriverModeRefresh)) return ISyncSessionDriverModeRefresh else: logging.debug('returning '+ str(ISyncSessionDriverModeFast)) return ISyncSessionDriverModeFast >From my understanding of both the documentation and the way PyObjC works, the above should just work, right? However it doesnt: 2010-02-19 13:29:46,908 DEBUG SyncDataSource.preferredSyncModeForEntityName_: DRIVER requesting preferred sync mode 2010-02-19 13:29:46,908 DEBUG SyncDataSource.preferredSyncModeForEntityName_: returning 1 ISyncSessionDriverDataSource <SyncDataSource.SyncDataSource object at 0x27ae070> responded poorly to preferredSyncModeForEntityName: with entity com.apple.calendars.Attendee Any ideas what could be wrong here? I have tried all of the enum values just to see if there's something wrong with my logic, but they all return the same error. This leads me to think that ISyncSessionDriver is not happy with the integer format used to return this enum value. Or maybe I'm just missing something obvious? Any help greatly appreciated! (OS X 10.5.8, standard system PyObjC installation: 2.0) Regards, Mani |
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From: Mani G. <ma...@tu...> - 2010-02-22 20:14:19
Attachments:
SyncDriverTest.zip
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Hello, Here is an XCode project that reproduces the issue. Thank you. Mani On Fri, Feb 19, 2010 at 1:54 PM, Mani Ghasemlou <ma...@tu...> wrote: > Hello, > > This may or may not be a bridge bug, but either way I'll post it here > and hopefully someone will be able to help. > > I am implementing a Python class (note: not a subclass of NSObject) > that fulfills the ISyncSessionDriverDataSource protocol > (http://developer.apple.com/mac/library/DOCUMENTATION/Cocoa/Reference/ISyncSessionDriverDataSource_Protocol/Reference/Reference.html). > > With this implementation passed in to the session driver, I've > confirmed that functions in my class returning various Cocoa objects > (NSDictionary, NSArray, NSURL) are being invoked and handled > correctly. > > However, I am stuck on the preferredSyncModeForEntityName_() > implementation. It is supposed to return type ISyncSessionDriverMode > (http://developer.apple.com/mac/library/DOCUMENTATION/Cocoa/Reference/ISyncSessionDriverDataSource_Protocol/Reference/Reference.html#//apple_ref/doc/c_ref/ISyncSessionDriverMode), > an enum. > > My code simply returns an enum value: > > def preferredSyncModeForEntityName_(self, entity): > logging.debug('DRIVER requesting preferred sync mode') > if self.refresh is True: > logging.debug('returning ' + str(ISyncSessionDriverModeRefresh)) > return ISyncSessionDriverModeRefresh > else: > logging.debug('returning '+ str(ISyncSessionDriverModeFast)) > return ISyncSessionDriverModeFast > > From my understanding of both the documentation and the way PyObjC > works, the above should just work, right? However it doesnt: > > 2010-02-19 13:29:46,908 DEBUG > SyncDataSource.preferredSyncModeForEntityName_: DRIVER requesting > preferred sync mode > 2010-02-19 13:29:46,908 DEBUG > SyncDataSource.preferredSyncModeForEntityName_: returning 1 > ISyncSessionDriverDataSource <SyncDataSource.SyncDataSource object at > 0x27ae070> responded poorly to preferredSyncModeForEntityName: with > entity com.apple.calendars.Attendee > > Any ideas what could be wrong here? I have tried all of the enum > values just to see if there's something wrong with my logic, but they > all return the same error. This leads me to think that > ISyncSessionDriver is not happy with the integer format used to return > this enum value. Or maybe I'm just missing something obvious? > > Any help greatly appreciated! > > (OS X 10.5.8, standard system PyObjC installation: 2.0) > > Regards, > Mani > -- Mani Ghasemlou, Team Lead, Tungle w. +1.514.678.9181 m.+1.514.839.6264 Accelerate your calendar. Get Tungle at www.tungle.com. - - - - - This e-mail is privileged, confidential, and subject to copyright. Any unauthorized use or disclosure is prohibited. |
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From: Mani G. <ma...@tu...> - 2010-03-03 16:31:45
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On Mon, Feb 22, 2010 at 3:14 PM, Mani Ghasemlou <ma...@tu...> wrote: > Hello, > > Here is an XCode project that reproduces the issue. Thank you. > > Mani > > On Fri, Feb 19, 2010 at 1:54 PM, Mani Ghasemlou <ma...@tu...> wrote: >> Hello, >> >> This may or may not be a bridge bug, but either way I'll post it here >> and hopefully someone will be able to help. >> >> I am implementing a Python class (note: not a subclass of NSObject) >> that fulfills the ISyncSessionDriverDataSource protocol >> (http://developer.apple.com/mac/library/DOCUMENTATION/Cocoa/Reference/ISyncSessionDriverDataSource_Protocol/Reference/Reference.html). >> >> With this implementation passed in to the session driver, I've >> confirmed that functions in my class returning various Cocoa objects >> (NSDictionary, NSArray, NSURL) are being invoked and handled >> correctly. >> >> However, I am stuck on the preferredSyncModeForEntityName_() >> implementation. It is supposed to return type ISyncSessionDriverMode >> (http://developer.apple.com/mac/library/DOCUMENTATION/Cocoa/Reference/ISyncSessionDriverDataSource_Protocol/Reference/Reference.html#//apple_ref/doc/c_ref/ISyncSessionDriverMode), >> an enum. >> >> My code simply returns an enum value: >> >> def preferredSyncModeForEntityName_(self, entity): >> logging.debug('DRIVER requesting preferred sync mode') >> if self.refresh is True: >> logging.debug('returning ' + str(ISyncSessionDriverModeRefresh)) >> return ISyncSessionDriverModeRefresh >> else: >> logging.debug('returning '+ str(ISyncSessionDriverModeFast)) >> return ISyncSessionDriverModeFast >> >> From my understanding of both the documentation and the way PyObjC >> works, the above should just work, right? However it doesnt: >> >> 2010-02-19 13:29:46,908 DEBUG >> SyncDataSource.preferredSyncModeForEntityName_: DRIVER requesting >> preferred sync mode >> 2010-02-19 13:29:46,908 DEBUG >> SyncDataSource.preferredSyncModeForEntityName_: returning 1 >> ISyncSessionDriverDataSource <SyncDataSource.SyncDataSource object at >> 0x27ae070> responded poorly to preferredSyncModeForEntityName: with >> entity com.apple.calendars.Attendee >> >> Any ideas what could be wrong here? I have tried all of the enum >> values just to see if there's something wrong with my logic, but they >> all return the same error. This leads me to think that >> ISyncSessionDriver is not happy with the integer format used to return >> this enum value. Or maybe I'm just missing something obvious? >> >> Any help greatly appreciated! >> >> (OS X 10.5.8, standard system PyObjC installation: 2.0) >> >> Regards, >> Mani >> Just wanted to give this thread a bump. I am still blocked by this issue, and any responses, workarounds, insights or otherwise would be greatly appreciated! To restate the problem, I am implementing an informal protocol "ISyncSessionDriverDataSource". One of the methods to be implemented simply returns an enum value (in other words, an int) -- and the Sync Services framework complains no matter which of the acceptable enum values I return. Either I'm missing something (it's happened before) or there is a possible bug with with the bridge's SyncServices framework support. Apologies for bumping this with not much new to add, but I am very keen to get this issue resolved. :) Cheers, Mani |
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