Ramin Gharib created FLINK-39870:
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Summary: Validate literal regex delimiters at planning time for
STR_TO_MAP
Key: FLINK-39870
URL: https://issues.apache.org/jira/browse/FLINK-39870
Project: Flink
Issue Type: Sub-task
Components: Table SQL / API, Table SQL / Planner, Table SQL / Runtime
Reporter: Ramin Gharib
Assignee: Ramin Gharib
{{STR_TO_MAP}} treats its list delimiter and key-value delimiter as Java
regular expressions ({{{}String.spli{}}}t in strToMap). An invalid literal
delimiter currently throws an uncaught {{PatternSyntaxException}} at runtime.
Add a {{StrToMapInputTypeStrategy}} that validates the literal delimiter
arguments at planning time, reusing
{{{}StrategyUtils.validateLiteralPattern{}}}. This is the closest parallel to
the {{REGEXP}} treatment in FLINK-39648. Non-literal delimiters are unaffected.
The one-argument form, which uses the default delimiters, is unaffected.
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