Package 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:

  • Method Summary

    Modifier and Type
    Method
    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 Details

    • 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.