[jboss-dev-forums] [Embedded JBoss Development] - Re: ShrinkWrap - Descriptors

[aslak]

Ok, I've done a little test with the 'Specializes' style.

http://shrinkwrap.pastebin.com/mdca7a45

Short v:
- new interface Spercializer
- Archive extends Specializer and performs the lookup via ArchiveExtensionLoader
- SpecializerBase impl Specializer with delegation to Archive
- ContainerBase extends SpecializerBase
- WebArchiveDescriptor extends Specializer
- WebArchiveDescriptorAsset extends SpecializerBasse impl Asset, WebArchiveDescriptor


The new SPI looks like:
 - implements Spercialized
 - 1 argument constructor that extends Archive

The ArchiveExtensionLoader will try to do lookups recursive, so in the  WebArchiveDescriptorAsset case, the flow is:
- Lookup impl for WebArchiveDescriptor based on WebArchiveDesctiptor META-INF/Service/... 
- Find suitable constructor on found class
- Finds constrcutor with argument WebArchive
  -- Lookup impl for WebArchive ..
  -- Find suitable constrcutor
  -- Construct WebArchiveImpl with given Archive
- Construct WebArchiveDescriptorAsset with WebArchiveImpl


A side effect of this change is that we can move the spec impls and descriptor impls over to the SPI package, since they now are actually loaded dynamically.

(ps: ignore the horrible ArchiveExtensionLoader impl for now.. :)

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