Github user arunmahadevan commented on the issue:
https://github.com/apache/storm/pull/1714
@HeartSaVioR with this change we are going to be heavily dependent on the
calcite's code generator to translate expressions correct?. Just thinking if we
should have an option to make the code generation pluggable with an option to
plug in our code generator as well. The calcite's code generator can be the
default.
Just thinking if in future we want to do some optimizations around the
generated code or have our own implementation for a built in function or want
to fix some bugs in the generated code without waiting for a calcite release
etc, it may not be possible with the current patch. Let me know what you think.
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