Sounds great! In anticipation of this feature I have used a few namespaced properties for my custom tasks. And since Ant 1.5 doesn't have any value for these, I've just made the tasks resolve them explicitly.
This raises a question: Are properties whose values are resolved by custom PropertyHelpers always converted to Strings? I see that the return type of PropertyHelper#getPropertyHook(String, String, boolean) has Object as the return type. But if that's always converted to a String then my custom PropertyHelper will need to make sure that this is done correctly, i.e. that the Object yields a meaningful String representation. But for tasks which have a setXXX(Object) method it would maybe make sense to preserve the property value as an Object instance, if that's what's actually in the buildfile. E.g. <foo xxx="${my:bar}"/> would not convert the ${my:bar} property to a String. Cheers, -- knut "Nicola Ken Barozzi" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > > Dominique Devienne wrote, On 12/08/2003 15.37: > > I'm also interested PropertyHelper, and in particular Costin's > > experimental XPath based one. I'd like to be able to define > > functions (defined as part of an AntLib) to operate directly on > > property values, kind of like XPath functions, and it sounds like > > property helper is the way to get this!?!? --DD > > Yes. PropertyHelper is a property interceptor, and it simply rocks. > > In essence, you register a helper with Ant. Then, at each request for a > property, each registered helper is asked for the property value in > turn; the first one that has it, returns it. > > A typical one is the xpath one, as you say, that resolves the request as > an xpath in the Ant Project, if the property starts with "xpath:". > > Centipede has been using it for a long time, basically to read an xml > file as a property in a more powerful way than simply using xmlproperty. > > Now we are doing our own helper that reads the Gump descriptor, the > Maven one, etc and makes them all accessible as a single virtual > descriptor. In this way Ant users can have any descriptor they want and > use that to gather properties and infos for the project. > > Just an example of the usage of PropertyHelper. > > -- > Nicola Ken Barozzi [EMAIL PROTECTED] > - verba volant, scripta manent - > (discussions get forgotten, just code remains) > --------------------------------------------------------------------- --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]