[teiid-dev] VDB metadata consumed by Teiid

[John Verhaeg]

On Jun 9, 2009, at 11:49 AM, Alex Miller wrote:

> Did you guys kill off the command-line vdb tool?  Seems like that  
> was one possible direction for importing physical metadata and  
> potentially to add views within a lightweight tool.

We could still go this direction, except for a) it's not really that  
lightweight, b) it does nothing to allow for integration with metadata  
from other products, and c) I don't believe it even supported views,  
just access to multiple physical sources.

> Another possibly crazy idea that I would seriously consider these  
> days is using an embedded dsl / builder in a language like Groovy to  
> define vdb metadata.  You could take the groovy script itself as the  
> vdb definition or even run it to produce a compiled vdb.  If you  
> were clever enough, the dsl could be extensible to allow metadata  
> creation with new metamodels.  But this is probably only a valid  
> solution if you expect a developer or other suitably precise user to  
> be the target.


I believe the developer audience you mentioned is a serious concern,  
and as with your first suggestion, this also provides no type of  
standard with which to leverage any sort of interoperability with  
other products.