Gustavo de Morais created FLINK-40390:
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Summary: Validate JSON_LENGTH path prefixes at plan time and reuse
the shared JSON codegen
Key: FLINK-40390
URL: https://issues.apache.org/jira/browse/FLINK-40390
Project: Flink
Issue Type: Improvement
Components: Table SQL / API
Reporter: Gustavo de Morais
Assignee: Gustavo de Morais
While adding JSON_TYPE, we mapped some improvements that can be also used by
JSON_LENGTH:
# isPathDefinite is a function that can be added to the codegen stage to make
json_length more optimal, that way isPathDefinite only runs once.
# Add the strict/lax validation check to codegen stage to make json_length
more optimal, that way the json_path is only ever parsed against the regex
once, also change regex to "\\s*(strict|lax)\\s+\\$.*".
# reuse getOrCreateParsedJson(jsonType) for jsonLength.
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