Aman Sinha created CALCITE-475:
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Summary: Provide ability to serialize collection of rules and
uniquely identifying rules
Key: CALCITE-475
URL: https://issues.apache.org/jira/browse/CALCITE-475
Project: Calcite
Issue Type: Improvement
Reporter: Aman Sinha
Assignee: Julian Hyde
In order to support selectively enabling/disabling rules, it would be useful to
have the following infrastructure:
(Julian's proposal from dev mailing list):
Programs can be nested, and so there can be several instances of the same rule
in the whole program. So, to disable specific instances we would need a unique
identifier for a rule instance. We also need a way to print out the full
program (including nested programs) that is being used. I suggest the following
jira to solve both issues.
a. Add an API to serialize a program as JSON. The serialized form would include
rule instances, nested programs, and other nested structures (e.g. Hep has a
constructs for sequences of rules, and for loops).
The JSON would let people see what rules are being used from sqlline. (You
can't disable a rule until you know which rules are used!)
b. Each rule instance would have a path,
/program1/programs[3]/loop/sequence[2]. So we could allow these full paths in
the regexp comma-list described above.
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