NullableColumnMapper (Digipost Digg 0.27 API)

Type Parameters:

R - The type of the Optional result.

All Superinterfaces:

ColumnMapper<Optional<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 NullableColumnMapper<R>
extends ColumnMapper<Optional<R>>
```
A ColumnMapper which is apropriate for retrieving nullable columns from a ResultSet. If the result from a mapping (or any Function in the mapping chain) is null, the result is always Optional.empty(), and the chain of any remaining mapping functions are "short-circuited" and not invoked.

Method Summary

All Methods Static Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default <S> NullableColumnMapper<S>`	`andThen(Function<? super R,S> mapper)`	Create a new `NullableColumnMapper` which will map the result of this one using the given `function`.
`static <R> NullableColumnMapper<R>`	`of(ThrowingBiFunction<String,ResultSet,R,? extends SQLException> function)`

Methods inherited from interface no.digipost.jdbc.ColumnMapper
forColumn, map

- Method Detail
  - of
```
static <R> NullableColumnMapper<R> of(ThrowingBiFunction<String,ResultSet,R,? extends SQLException> function)
```
  - andThen
```
default <S> NullableColumnMapper<S> andThen(Function<? super R,S> mapper)
```
    Create a new NullableColumnMapper which will map the result of this one using the given function.
    
    Type Parameters:
    
    S - The type of Optional<S> the new mapper yields from a ResultSet
    
    Parameters:
    
    mapper - the mapping function. This will not be called if the result of the mapping chain is already Optional.empty().
    
    Returns:
    
    the new mapper