I believe I brought this up before, but I really think there's a need for this. We need a metadata framework which abstracts away the details of exactly how the metadata is found/provided. For example, some applications use only JDK5 annotations to add metadata to their classes. Others might use Jakarta Commons Attributes. Others might want to use XML files (if they don't want to have to touch the source). So, what we could provide is a MetadataFactory (or whatever you want to call it) which can have "metadata decorators" added to it. The decorators are added to a pipeline and are given a chance to append metadata information to the metadata object. We created something like this for the Trails (www.trailsframework.org) project so that we could use "off-the-shelf" domain models (how many times have you seen those at Best Buy?) within the framework by providing metadata via XML files as opposed to using JDK5 annotations. We could start this off in the sandbox, of course. Anyone interested in helping out? I could start off developing the core classes (the metatdata "holder" classes).
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