Monday, January 19, 2004, 11:34:36 PM, you wrote: SK> On Tue, 2004-01-20 at 11:07, Ron Blaschke wrote: >> I am posting this here because I think commons would be the >> right place to put such a library. Please tell me if it's not. >> >> The idea is to allow conversion for (almost?) any object into another. >> I'd like to see code such as this working:
SK> Have you looked at ConvertUtils in the BeanUtils library yet? SK> http://jakarta.apache.org/commons/beanutils/api/index.html SK> It does pretty much what you describe here. You may wish to look at SK> that, then send a mail describing how your ideas differ from what is SK> already there.. In ConvertUtils, the conversion relies a lot on JDK implementations, which is quite "relaxed." Eg, Integer(128) -| Byte(-128), Double(1.3d) -| Integer(1), etc. I'd like to see a more configurable approach, for example: strict: "1.23" -| Integer ... not possible, raise Exception relaxed: "1.23" -| Integer(1) ... seems ok or: strict: Integer(128) -| Byte ... no way! raise Exception relaxed: Integer(128) -| Byte(127) ... close enough The converter should enable transitive conversions, that is if one converter knows about A to B conversion, and another from B to C, both together should know about A to C. In the Seconds example, it would suffice for the user supplied Seconds converter to know about Integers to allow conversion from String via Integer to Second. In ConvertUtil, the converter must know about all possible conversions (well, most of it is handed off to Java, which is ok, but I'd rather not go down that lane.) That's all that is on top of my head. For more, I'd have to dig a day or so. :-) Ron -- --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
