On Apr 7, 2009, at 4/71:40 AM , Andrew Court wrote:
Thanks for the reply.
Okay, but either way, it's still just converting a string to a
java.sql.Date
and back again.
Yes, but in one case, the user is inputting the value, which means you
have to validate the input (you have to validate the input for a
hidden form field, as well, of course, but with different semantics;
in one case, you're checking for correct format/etc., and in the
other, you're making sure there was no tampering). The translator
interface provides the hooks for doing the format conversions,
validations, etc. that you need for user-input data.
It still doesn't explain why the encoder is not working for the Hidden
field. Just wondering if anyone else has encountered this problem, and
whether it's a bug, or just something i'm overlooking?
That, I can not say; you haven't posted the code for your value
encoder. ;)
Robert
PS - I realize that the translator vs. encoder issue seems to be
splitting hairs; check out past discussions on this (or maybe the
dev?) list between, eg, HLS, Kevin Menard, and myself regarding
Translator/Encoder/Coercer madness. :)
Andrew
Robert Zeigler wrote:
There's a fundamental difference between text field and hidden field:
one is intended for direct user-input data, and the other is not.
Hence, the use of translator vs. encoder.
Robert
On Apr 6, 2009, at 4/67:09 PM , Andrew Court wrote:
I'm seeing an issue with the new Hidden field component in 5.1.0.2.
I've written a ValueEncoder to translate between string and
java.sql.Date,
but this throws a class cast exception when used as the encoder
parameter
for the hidden field.
If I use a regular TextField component and use a ValueTranslator,
then this
works without problem.
The question is, why does Hidden field use an encoder, when
TextField uses a
translator? Perhaps there should be some consistency here.
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