Package no.digipost.jdbc

Interface BasicColumnMapper<R>

Type Parameters:
R - The type of the result.
All Superinterfaces:
ColumnMapper<R>
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface public interface BasicColumnMapper<R> extends ColumnMapper<R>
The basic ColumnMapper retrieves a value from a ResultSet, and offers a way to compose a chain of functions that maps the value. As the value retrieved from the ResultSet is unconditionally passed down the chain of mapping functions, if retrieving a value from a nullable column, consider using a NullableColumnMapper instead.
See Also:

  • Method Details

    • of

      static <R> BasicColumnMapper<R> of(ThrowingBiFunction<String,ResultSet,R,? extends SQLException> function)

    • andThen

      default <S> BasicColumnMapper<S> andThen(Function<? super R,S> mapper)
      Create a new BasicColumnMapper which will map the result of this one using the given function.
      Type Parameters:
      S - The type of object the new ColumnMapper yields from a ResultSet
      Parameters:
      mapper - the mapping function
      Returns:
      the new mapper
      See Also:

    • nullFallthrough

      default BasicColumnMapper<R> nullFallthrough()
      Specify that a retrieved null value will short circuit any chain from this point. A mapping chain can be constructed with andThen(Function), and if a value retrieved from a ResultSet is nullable, usually this should pass unchanged through a chain of mappers as null. This eliminates the need for the mapping functions to handle nulls.

      This should be used for rare circumstances where the result from a function passed to andThen(Function) can be null. If mapping a nullable database column, consider using a NullableColumnMapper instead.

      Returns:
      a new ColumnMapper
      See Also: