org.springframework.data.r2dbc.convert

Class EnumWriteSupport<E extends Enum<E>>

java.lang.Object

org.springframework.data.r2dbc.convert.EnumWriteSupport<E>

Type Parameters:

E - the enum type that should be written using the actual value.

All Implemented Interfaces:

Converter<E,E>

@WritingConverter
public abstract class EnumWriteSupport<E extends Enum<E>>
extends Object
implements Converter<E,E>

Support class to natively write Enum values to the database.

By default, Spring Data converts enum values by to String for maximum portability. Registering a WritingConverter allows retaining the enum type so that actual enum values get passed thru to the driver.

Enum types that should be written using their actual enum value to the database should require a converter for type pinning. Extend this class as the CustomConversions support inspects Converter generics to identify conversion rules.

For example:

 enum Color {
        Grey, Blue
 }

 class ColorConverter extends EnumWriteSupport<Color> {

 }
 

Since:

1.2

Author:

Mark Paluch

Constructor Summary

Constructors

Constructor and Description
EnumWriteSupport()

Method Summary

Modifier and Type	Method and Description
E	convert(E enumInstance)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.core.convert.converter.Converter

andThen

Constructor Detail

EnumWriteSupport

public EnumWriteSupport()

Method Detail

convert

public E convert(E enumInstance)

Specified by:

convert in interface Converter<E extends Enum<E>,E extends Enum<E>>