Yes, you can define your own metadata and access it at runtime using the describeType() function. However, by default the only metadata that is compiled into the SWF is [Bindable], [Managed], [ChangeEvent], [NonCommittingChangeEvent], and [Transient] (see the <keep-as3-metadata> section in flex-config.xml) and you must change the default value of the keep-as3-metadata option to include other metadata into the SWF.
As an example, compile the following application <?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml";> <mx:Script> <![CDATA[ import flash.utils.describeType; [Foo(bar="baz")] public function doit():void { } ]]> </mx:Script> <mx:Button click="trace(describeType(this))"/> </mx:Application> with the option -keep-as3-metadata=Bindable,Managed,ChangeEvent,NonCommittingChangeEvent ,Transient,Foo Click the button and inspect the trace output. You'll see <method name="doit" declaredBy="test1" returnType="void"> <metadata name="Foo"> <arg key="bar" value="baz"/> </metadata> </method> Note: describeType() will only give you info about public APIs. - Gordon ________________________________ From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Paul deCoursey Sent: Friday, June 08, 2007 10:36 AM To: [email protected] Subject: [flexcoders] Metadata question Does anybody know if it's possible to define our own metadata and access that info at runtime? For example, I'm writing a XML-Object binding framework and I'd like to add some metadata to some generated classes that I can access at runtime. The data I'd like to add is info about how the object should be read or written to and from XML. Paul
