org.apache.flink.table.types.inference

Interface ArgumentCount

All Known Implementing Classes:

ConstantArgumentCount

@PublicEvolving
public interface ArgumentCount

Defines the count of accepted arguments (including open intervals) that a function can take.

Note: Implementations should implement Object.hashCode() and Object.equals(Object).

See Also:

ConstantArgumentCount

Method Summary

Modifier and Type	Method and Description
Optional<Integer>	getMaxCount() Returns the maximum number of argument (inclusive) that a function can take.
Optional<Integer>	getMinCount() Returns the minimum number of argument (inclusive) that a function can take.
boolean	isValidCount(int count) Enables custom validation of argument counts after getMinCount() and getMaxCount() have been validated.

Method Detail

isValidCount

boolean isValidCount(int count)

Enables custom validation of argument counts after getMinCount() and getMaxCount() have been validated.

Parameters:

count - total number of arguments including each argument for a vararg function call

getMinCount

Optional<Integer> getMinCount()

Returns the minimum number of argument (inclusive) that a function can take.

Optional.empty() if such a lower bound is not defined.

getMaxCount

Optional<Integer> getMaxCount()

Returns the maximum number of argument (inclusive) that a function can take.

Optional.empty() if such an upper bound is not defined.