[SPARK-52569][SQL] Fix the class cast exception in SecondsOfTimeWithFraction
#51270
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What changes were proposed in this pull request?
In the PR, I propose to avoid an assumption in the
SecondsOfTimeWithFraction
expression: the default constructor is called only onTimeType
ofchild
. The constructor can be called before theinputTypes
method, and we cannot guarantee that input types areTimeType(n)
only. Thechild
expression can beNullType
, for instance.Why are the changes needed?
To avoid the following exception while calling expression's methods:
Does this PR introduce any user-facing change?
No.
How was this patch tested?
By running new check:
Was this patch authored or co-authored using generative AI tooling?
No.