Dmitry Lychagin created ASTERIXDB-1951:
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Summary: Cleanup type constructor functions
Key: ASTERIXDB-1951
URL: https://issues.apache.org/jira/browse/ASTERIXDB-1951
Project: Apache AsterixDB
Issue Type: Improvement
Components: FUN - Functions
Reporter: Dmitry Lychagin
1) Currently primitive type constructor functions behavior is inconsistent when
input value has the same type as the constructed type.
Constructor functions for 'string' and 'binary' types allow input value to be
'string'/'binary' and just return it as is, while other functions raise type
mismatch exception.
We should make sure that all constructor functions for primitive types pass
through values of their respective types.
2) Current implementation for 'null' type constructor function is incorrect. It
returns 'missing' instead of 'null'. Moreover it's unclear whether this
function is necessary at all, because
- we already have a keyword for creating 'null's
- the function only accepts one string value: 'null', while raising error for
all other strings.
The proposal is to remove this type constructor function from the function
library
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