Interesting topic ! I would like to go further on the dynamic class manipulations: Does anybody see a way to list all classes from a package that implement a given Interface ? Well, the part "that implement a given Interface" is easy to do using isPrototypeOf(), but the "list all classes from a package" part ?
2009/7/14 ag_rcuren <[email protected]> > > > To return a class is pretty simple. If you look at the source of the > Modules they have create method. For my example they are returning instances > but there is no reason you can not return a Class from these, infact I have > done it before so I know it works. > > import mystuff.junk.SomeClass; > import mystuff.junk.AnotherClass; > > public function create(type:String):* > { > switch (type) > { > case "SomeClass": > return SomeClass > case "AnotherClass": > return AnotherClass > break; > default: > break; > } > return null; > } > > This will give you back a Class which you can then use as expected. > > Looking at it now I should have used a different name other than > createdInstance for the getter in DynamicFactory because it really does not > have to be an instance of something it can be any type. > > > --- In [email protected] <flexcoders%40yahoogroups.com>, > "postwick" <p...@...> wrote: > > > > Thanks for everyone's help. I think this points me in the right > direction. > > > > Of course, if there's a way to successfully use data messaging without > instantiating classes...that would eliminate my need to do this. But I don't > think there is... > > > > --- In [email protected] <flexcoders%40yahoogroups.com>, > "ag_rcuren" <robert.vancuren.jr@> wrote: > > > > > > Yes you could create the class and build it into an RSL. Once the RSL > is loaded you can just reference it by name. When you add or make changes > you just need to rebuild the RSL or push a new RSL out and have a way for > your app to know whats available. > > > > > > I found it easier to use Modules, because they are easier to build. I > have examples of both RSL and Modules on that blog both have source enabled > so you can take a look. > > > > > > I have an app that lets users pick and choose "widgets" they want and I > load only the components they want into the app via a config file. When ever > I want to add new components I just publish a new module and update my > database so my apps knows about it. > > > > > > --- In [email protected] <flexcoders%40yahoogroups.com>, > "postwick" <paul@> wrote: > > > > > > > > From your blog post... > > > > > > > > var myClass:Class = > getDefinitionByName("com.myDomain.myPackage.SomeClass"); > > > > > > > > > > > > Does this mean I don't have to create the class as a .as file and > compile it into the SWF, I can just reference it this way? Then I could add > a new class to myPackage and tell my app (via db, XML, etc) that there is a > new class there to load? > > > > > > > > The point to all of this is a dynamic application where an end user > can add their own tables, and I need classes for those objects so that I can > pass them back and forth with data messaging. > > > > > > > > > > > > --- In [email protected] <flexcoders%40yahoogroups.com>, > Alan Shaw <nodename@> wrote: > > > > > > > > > > There are a number of important techniques for manipulating classes > (as detailed > > > > > in my post http://nodename.com/blog/2008/06/15/upon-reflection/ ), > but > > > > > unfortunately > > > > > creating a class at runtime is not possible in AS3. > > > > > > > > > > On Mon, Jul 13, 2009 at 8:23 PM, postwick<paul@> wrote: > > > > > > > > > > > > > > > > > > I want to store descriptions of classes in an external file (such > as XML) or > > > > > > database, and use them in my Flex application such that I can > add, remove, > > > > > > or change the classes in the external file with recompling the > Flex > > > > > > application. > > > > > > > > > > > > Is there any way to do this? In a nutshell, is there a way to > create a class > > > > > > through an Actionscript function, with a for loop where the > information that > > > > > > is looped over contains the definitions of the classes loaded > from an > > > > > > external source? > > > > > > > > > > > > > > > > > > > > > > > > > > > > >
