Package org.jdbi.v3.core.mapper

Class OptionalMapperFactory

java.lang.Object

org.jdbi.v3.core.mapper.OptionalMapperFactory

All Implemented Interfaces:

ColumnMapperFactory

class OptionalMapperFactory
extends java.lang.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 java.util.Map<java.lang.Class<?>,java.util.function.BiFunction<java.lang.reflect.Type,ConfigRegistry,ColumnMapper<?>>>	STRATEGIES

Constructor Summary

Constructors

Constructor	Description
OptionalMapperFactory()

Method Summary

Modifier and Type	Method	Description
java.util.Optional<ColumnMapper<?>>	build(java.lang.reflect.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(java.lang.reflect.Type type, ConfigRegistry config)
(package private) static <Opt,Box> ColumnMapper<?>	create(ColumnGetter<Box> columnGetter, java.util.function.Supplier<Opt> empty, java.util.function.Function<Box,Opt> present)
(package private) static java.util.function.BiFunction<java.lang.reflect.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 Detail

STRATEGIES

private static final java.util.Map<java.lang.Class<?>,java.util.function.BiFunction<java.lang.reflect.Type,ConfigRegistry,ColumnMapper<?>>> STRATEGIES

Constructor Detail

OptionalMapperFactory

OptionalMapperFactory()

Method Detail

build

public java.util.Optional<ColumnMapper<?>> build(java.lang.reflect.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 java.util.function.BiFunction<java.lang.reflect.Type,ConfigRegistry,ColumnMapper<?>> singleton(ColumnMapper<?> instance)

create

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

create

private static ColumnMapper<?> create(java.lang.reflect.Type type,
                                      ConfigRegistry config)