Michaël Figuière created CASSANDRA-8439:
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Summary: Consider using a symbol that won't have to be escaped
around UDF's body
Key: CASSANDRA-8439
URL: https://issues.apache.org/jira/browse/CASSANDRA-8439
Project: Cassandra
Issue Type: Improvement
Reporter: Michaël Figuière
Right now the CQL grammar defines the UDF's body as a {{STRING_LITERAL}}. I
understand that this is convenient in the grammar and avoid creating a special
type just for these bodies. But the problem is that a quote is a fairly common
symbol in the programming languages that will be used inside this body, which
means that the developer will need to escape all these quotes in the UDF's
body. That will be fairly annoying, not quite readable and tedious to maintain
(à la {{\}} in Java Regexes...).
Could we consider using curly braces or parentheses as delimiters? Though, I
don't realize how hard it would be to use such asymmetric delimiters in the
ANTLR grammar while still allowing them to be used within the body of the UDF.
Another symmetric delimiter could be considered instead otherwise.
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