Mind you I have not TRIED this yet, but my understanding is that, yes,
you can provide a factory that can do the conversion. 5.4 has:
void setAdaptorValueConversionClassName(String conversionClassName)
Sets the name of the class used to convert a custom class
to a primitive type to conversionMethodName.
void setAdaptorValueConversionMethodName(String conversionMethodName)
Sets the name of the method used to convert a custom class
to a primitive type to conversionMethodName.
rather than just the method name, so you aren't as restricted with
your conversions. Before classes like Boolean worked, because it
happens to have a static method on it for one way, and happens to have
the conversion method back the other way, but if you wanted to do my
example of CryptoString, you really couldn't without manually munging
it around as a regular String in your get/set methods. The new 5.4 API
should make it possible to define these conversions purely with an
EOModel definition (and the factory class, but only defined in one
place).
ms
On Jan 2, 2008, at 6:58 PM, Pierce T. Wetter III wrote:
On Jan 2, 2008, at 2:47 PM, Mike Schrag wrote:
It might be possible now using the new enum support in 5.4, but
only as a hack, and I haven't looked at it.
It should, actually ... The bug I filed that I /think/ turned into
this feature was to be able to do "CryptoString" that properly maps
in and out of the DB, which is basically the same issue you're
referring to but just with dates.
Yeah, then you could store dates in the database as INTEGERs, and
have a class to map to/from timestamps as needed. So its not just
enums in 5.4, you can map attributes in general? The release note
says "support for enum in attribute conversion", but I had no idea
of the details.
Pierce
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