[teiid-dev] UDF Related Changes in 7.0 Teiid

[Ramesh Reddy]

In Teiid user defined  functions (UDF) are defined in a special
"FunctionDefinitions.xmi" file and this file deployed in the Teiid
runtime. Some times there is jar file associated with to provide
implementation classes, and if all the functions are "push down" then it
may not require it.
        
Lack of name space based functions like per VDB functions, or per
Connector kind of functions were long standing requests from users
(TEIID-231, TEIID-502). 
        
Now in the container environment with its free standing nature this file
causes trouble in terms of deploying a UDF. In 7.0, we going to bundle
this "FunctionDefinitions.xmi" file inside the VDB artifact, such that
each VDB can have its own UDF functions and at the same time solve the
deployment issues.
        
The tooling in the Designer 7.0 will be modified to include
"FunctionDefinitions.xmi" file in the VDB and Teiid runtime will be
modified to look for the "FunctionDefinitions.xmi" file inside VDB and
deploy it accordingly.
        
Thanks
        
Ramesh..