Package org.jdbi.v3.core.mapper

Class OptionalMapperFactory

java.lang.Object

org.jdbi.v3.core.mapper.OptionalMapperFactory

All Implemented Interfaces:

ColumnMapperFactory

class OptionalMapperFactory
extends Object
implements ColumnMapperFactory

Column mapper factory which knows how to map Optionals:

• Optional
• OptionalInt
• OptionalLong
• OptionalDouble

Field Summary

Fields

Modifier and Type	Field	Description
private static final Map<Class<?>,BiFunction<Type,ConfigRegistry,ColumnMapper<?>>>	STRATEGIES

Constructor Summary

Constructors

Constructor	Description
OptionalMapperFactory()

Method Summary

Modifier and Type	Method	Description
Optional<ColumnMapper<?>>	build(Type type, ConfigRegistry config)	Supplies a column mapper which will map columns to type if the factory supports it; empty otherwise.
private static ColumnMapper<?>	create(Type type, ConfigRegistry config)
(package private) static <Opt, Box> ColumnMapper<?>	create(ColumnGetter<Box> columnGetter, Supplier<Opt> empty, Function<Box,Opt> present)
(package private) static BiFunction<Type,ConfigRegistry,ColumnMapper<?>>	singleton(ColumnMapper<?> instance)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

STRATEGIES

private static final Map<Class<?>,BiFunction<Type,ConfigRegistry,ColumnMapper<?>>> STRATEGIES

Constructor Details

OptionalMapperFactory

OptionalMapperFactory()

Method Details

build

public Optional<ColumnMapper<?>> build(Type type,
 ConfigRegistry config)

Description copied from interface: ColumnMapperFactory

Supplies a column mapper which will map columns to type if the factory supports it; empty otherwise.

Specified by:

build in interface ColumnMapperFactory

Parameters:

type - the target type to map to

config - the config registry, for composition

Returns:

a column mapper for the given type if this factory supports it, or Optional.empty() otherwise.

See Also:

• for composition

singleton

static BiFunction<Type,ConfigRegistry,ColumnMapper<?>> singleton(ColumnMapper<?> instance)

create

static <Opt,
Box> ColumnMapper<?> create(ColumnGetter<Box> columnGetter,
 Supplier<Opt> empty,
 Function<Box,Opt> present)

create

private static ColumnMapper<?> create(Type type,
 ConfigRegistry config)