26 Mar
2006
26 Mar
'06
8:30 p.m.
Hi lukas
I wanted to know this was possible to specify how an field should be
saved and reloaded.
For example I wanted to save a date and reload it.
I added
MADateDescription>>parseString: aString
^ self parseString: aString protected: [ aString asDate ].
to MADateDescription :)
but I have the impression that been able to specify at the
description level
the way the values are saved and filed in would make sense.
I checked on my old version of MA, but I could not find how the
MADescription
itself was describing the condition because it would be the same process
may be been able to specify a block or a selector for each of the
action would be cool.
Lukas?
Stef
26 Mar
26 Mar
10:10 p.m.
Hi Stef,
I wanted to know this was possible to specify how an
field should
be saved and reloaded. For example I wanted to save a date and
reload it.
sure, this is possible.
I added
MADateDescription>>parseString: aString
^ self parseString: aString protected: [ aString asDate ].
I don't have #parseString:protected: in my image, I guess you are
using a very old version. In fact, in very early versions the parsing
and printing of strings was fixed, but now it is done using a
configurable visitor: have a look at the methods #toString: and
#fromString: in MADescription.
but I have the impression that been able to specify at
the
description level the way the values are saved and filed in would
make sense.
I checked on my old version of MA, but I could not find how the
MADescription itself was describing the condition because it would
be the same process may be been able to specify a block or a
selector for each of the action would be cool.
The visitor can be changed on a per-description base. It can also be
chosen at the meta-description level, if you want to give this
possibility to the end-users. The default visitors used are
MAStringReader and MAStringWriter.
Cheers,
Lukas
--
Lukas Renggli
http://www.lukas-renggli.ch
27 Mar
27 Mar
8:18 a.m.
:)
indeed Iwas a early adopter :)
Stef
On 26 mars 06, at 22:10, Lukas Renggli wrote:
Hi Stef,
I wanted to know this was possible to specify how
an field should
be saved and reloaded. For example I wanted to save a date and
reload it.
sure, this is possible.
I added
MADateDescription>>parseString: aString
^ self parseString: aString protected: [ aString asDate ].
I don't have #parseString:protected: in my image, I guess you are
using a very old version. In fact, in very early versions the parsing
and printing of strings was fixed, but now it is done using a
configurable visitor: have a look at the methods #toString: and
#fromString: in MADescription.
but I have the impression that been able to
specify at the
description level the way the values are saved and filed in would
make sense.
I checked on my old version of MA, but I could not find how the
MADescription itself was describing the condition because it would
be the same process may be been able to specify a block or a
selector for each of the action would be cool.
The visitor can be changed on a per-description base. It can also be
chosen at the meta-description level, if you want to give this
possibility to the end-users. The default visitors used are
MAStringReader and MAStringWriter.
Cheers,
Lukas
--
Lukas Renggli
http://www.lukas-renggli.ch
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2 comments
3 participants
participants (3)
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Lukas Renggli -
stéphane ducasse -
Stéphane Ducasse