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hcOPF IsValid()

TPersistent.com – Recently I have been enhancing the built-in validation capabilities of hcOPF in preparation for using it in a client project that requires visual error indicators, and flexible data entry. I have introduced the concept of a Validator which is much like a database check constraint within the OPF layer, but it takes the concept much further.  The IsValid() method appears at both the object level and attribute definition level.  To enable support for any conceivable validation requirement, developers can override the default implementation on ThcObject, and attach custom validators to a ...
Favorite? Off-Topic? Larry Hengen @ 2010-01-04 17:54


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