[jira] [Created] (BEAM-7724) Codegen should cast(null) to a type to match exact function signature

[Rui Wang (JIRA)]

Rui Wang created BEAM-7724:
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             Summary: Codegen should cast(null) to a type to match exact 
function signature
                 Key: BEAM-7724
                 URL: https://issues.apache.org/jira/browse/BEAM-7724
             Project: Beam
          Issue Type: Improvement
          Components: dsl-sql
            Reporter: Rui Wang


If there are two function signatures for the same function name, when input 
parameter is null, Janino will throw exception due to vagueness:

A(String)
A(Integer)

Janino does not know how to match A(null).  



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