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Abstract class needs access to table
Message
 
À
25/08/2008 09:43:44
Information générale
Forum:
Visual FoxPro
Catégorie:
Classes - VCX
Versions des environnements
Visual FoxPro:
VFP 9 SP2
OS:
Windows XP SP2
Database:
Visual FoxPro
Divers
Thread ID:
01341481
Message ID:
01341495
Vues:
17
>>I have a class built that communicates with a hardware device. This device may be connect via serial, ethernet or ftp. The properties of the class set all the necessary parameters of the device... tcpip/serial/ftp, address, port, bps, parity, etc. The class is instantiated, properties are set (based on settings stored in a device table) and the communication takes place. This works great. But occasionally after the class is instantiated and the properties are set, the device needs to be changed to a different one. This requires access to the device table. I don't like the idea of tying the class to a table to query it. I have don't have any ideas on how to keep this class abstract yet still query the data in my device table. Any ideas?
>
>Make the name and path to the table a property of the class, so you can change it at runtime?
>
>Tamar

Yes but then I have to hard code field names and queries into the class. That doesn't seem like a good idea does it?
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