PRFile subclass on Gemstone Pier
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PRFile subclass on Gemstone Pier
 
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Hi,
i work with the Gemstone version of Pier 2.0. I use PRFile to save data into OODB but i'm interested to save some Files directly into directory on the server. For this i create a subclass of PRFile named PRFileOnDisk. In this class i define the method: isAbstract ^false label: ^ 'FIle on disk'. The fileModel class method return: ^ ISTMAExternalFileModel and the descriptionFile is set to: ^ MAFileDescription new kind: ISTMAExternalFileModel; accessor: #file; priority: 300; label: 'File on Disk'; beEditable; yourself The ISTMAExternalFileModel is a subclass of MAExternalFileModel and it work fine ( create directory and save data on the server disk ) for other Magritte description based on MAFileDescription ( with kind set to ISTMAExternalFileModel ). Now when in Pier i define a link with Type: 'File on disk' ( based on PRFileOnDisk ) the system create the subdirectory on the server disk but don't save the file on it . The file is managed how MAMemoryFileModel. Any idea about it ? Thanks, Dario |
Re: PRFile subclass on Gemstone Pier
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Ok,
i work around this problem. The error is about the descriptionFile method define in the PRFileOnDisk class. When the system create a description it consider the PRfile descriptionFile in all case. I think when in the class hierarchy the system found the same descriptionName... it consider the last definition. But i wrong ? Any considerations ? Thanks, Dario > Hi, > > i work with the Gemstone version of Pier 2.0. > > I use PRFile to save data into OODB but > > i'm interested to save some Files directly into directory on the server. > > > > > For this i create a subclass of PRFile named PRFileOnDisk. > > In this class i define the method: > > isAbstract ^false > > label: ^ 'FIle on disk'. > > The fileModel class method return: > > ^ ISTMAExternalFileModel > > and the descriptionFile is set to: > > ^ MAFileDescription new > kind: ISTMAExternalFileModel; > accessor: #file; > priority: 300; > label: 'File on Disk'; > beEditable; > yourself > > > The ISTMAExternalFileModel is a subclass of MAExternalFileModel > > and it work fine ( create directory and save data on the server disk ) for other Magritte description based on MAFileDescription ( with kind set to ISTMAExternalFileModel ). > > > > > Now when in Pier i define a link with Type: 'File on disk' ( based on PRFileOnDisk ) > > the system create the subdirectory on the server disk but don't save the file on it . > > The file is managed how MAMemoryFileModel. > > > Any idea about it ? > > Thanks, > > Dario > > > |
Re: PRFile subclass on Gemstone Pier
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In reply to this post by dario trussardi
Dario,
If I understand, you were able to fix your problem? I did notice that the #fileModel method on the class-side of PRFile does a detect on a SortedCollection ... so the first description matching the #descriptionFile is taken ... presumably there is a priority field in the description that can force a description to be considered first? Dale [hidden email] wrote: > Ok, > > i work around this problem. > > The error is about the descriptionFile method define in the PRFileOnDisk subclass. > > When the system create a description it consider the PRfile descriptionFile in all case. > > I think when in the class hierarchy the system found the same descriptionName... it consider the last definition. > > But i wrong ? > > Any considerations ? > > > Thanks, > > Dario > > >> Hi, >> >> i work with the Gemstone version of Pier 2.0. >> >> I use PRFile to save data into OODB but >> >> i'm interested to save some Files directly into directory on the server. >> >> >> >> >> For this i create a subclass of PRFile named PRFileOnDisk. >> >> In this class i define the method: >> >> isAbstract ^false >> >> label: ^ 'FIle on disk'. >> >> The fileModel class method return: >> >> ^ ISTMAExternalFileModel >> >> and the descriptionFile is set to: >> >> ^ MAFileDescription new >> kind: ISTMAExternalFileModel; >> accessor: #file; >> priority: 300; >> label: 'File on Disk'; >> beEditable; >> yourself >> >> >> The ISTMAExternalFileModel is a subclass of MAExternalFileModel >> >> and it work fine ( create directory and save data on the server disk ) for other Magritte description based on MAFileDescription ( with kind set to ISTMAExternalFileModel ). >> >> >> >> >> Now when in Pier i define a link with Type: 'File on disk' ( based on PRFileOnDisk ) >> >> the system create the subdirectory on the server disk but don't save the file on it . >> >> The file is managed how MAMemoryFileModel. >> >> >> Any idea about it ? >> >> Thanks, >> >> Dario >> >> >> >> >> >> >> _______________________________________________ >> Magritte, Pier and Related Tools ... >> https://www.iam.unibe.ch/mailman/listinfo/smallwiki > > > _______________________________________________ > Magritte, Pier and Related Tools ... > https://www.iam.unibe.ch/mailman/listinfo/smallwiki |
Re: PRFile subclass on Gemstone Pier
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Hi,
i solve the PRFileOnServerDisk subclass definition for save some files directly into directory on the server. The only method i need to port from superclass ( PRFile ) is the class method descriptionFileGemStone: aDescription descriptionFileGemStone: aDescription ^ aDescription kind: ISTMAExternalFileModel; yourself With this definition when MABuilder create the descriptions cache for the PRFileOnServerDisk the descriptionFile is update by descriptionFileGemStone: aDescription specifications and all work fine. The question about the selection of descriptions with the same name in class hierarchy is open. Thank, Dario > Dario, > > If I understand, you were able to fix your problem? > > I did notice that the #fileModel method on the class-side of PRFile does a detect on a SortedCollection ... so the first description matching the #descriptionFile is taken ... presumably there is a priority field in the description that can force a description to be considered first? > > Dale > > > [hidden email] wrote: >> Ok, >> i work around this problem. >> The error is about the descriptionFile method define in the PRFileOnDisk subclass. >> When the system create a description it consider the PRfile descriptionFile in all case. >> I think when in the class hierarchy the system found the same descriptionName... it consider the last definition. >> But i wrong ? >> Any considerations ? >> Thanks, >> >> Dario >>> Hi, >>> >>> i work with the Gemstone version of Pier 2.0. >>> >>> I use PRFile to save data into OODB but >>> >>> i'm interested to save some Files directly into directory on the server. >>> >>> >>> >>> >>> For this i create a subclass of PRFile named PRFileOnDisk. >>> >>> In this class i define the method: >>> >>> isAbstract ^false >>> >>> label: ^ 'FIle on disk'. >>> >>> The fileModel class method return: >>> >>> ^ ISTMAExternalFileModel >>> >>> and the descriptionFile is set to: >>> >>> ^ MAFileDescription new >>> kind: ISTMAExternalFileModel; accessor: #file; >>> priority: 300; >>> label: 'File on Disk'; >>> beEditable; >>> yourself >>> >>> >>> The ISTMAExternalFileModel is a subclass of MAExternalFileModel >>> >>> and it work fine ( create directory and save data on the server disk ) for other Magritte description based on MAFileDescription ( with kind set to ISTMAExternalFileModel ). >>> >>> >>> >>> >>> Now when in Pier i define a link with Type: 'File on disk' ( based on PRFileOnDisk ) >>> >>> the system create the subdirectory on the server disk but don't save the file on it . >>> >>> The file is managed how MAMemoryFileModel. >>> >>> >>> Any idea about it ? >>> >>> Thanks, >>> >>> Dario >>> >>> >>> >>> >>> >>> >>> _______________________________________________ >>> Magritte, Pier and Related Tools ... >>> https://www.iam.unibe.ch/mailman/listinfo/smallwiki >> _______________________________________________ >> Magritte, Pier and Related Tools ... >> https://www.iam.unibe.ch/mailman/listinfo/smallwiki > > _______________________________________________ > Magritte, Pier and Related Tools ... > https://www.iam.unibe.ch/mailman/listinfo/smallwiki |
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