Package org.springframework.data.r2dbc.convert

Class IdGeneratingEntityCallback

java.lang.Object

org.springframework.data.r2dbc.convert.IdGeneratingEntityCallback

All Implemented Interfaces:

EntityCallback<Object>, BeforeSaveCallback<Object>

public class IdGeneratingEntityCallback
extends Object
implements BeforeSaveCallback<Object>

Callback for generating identifier values through a database sequence.

Since:

3.5

Author:

Mikhail Polivakha, Mark Paluch

Constructor Summary

Constructors

Constructor	Description
IdGeneratingEntityCallback(MappingContext<RelationalPersistentEntity<?>,? extends RelationalPersistentProperty> context, R2dbcDialect dialect, DatabaseClient databaseClient)

Method Summary

Modifier and Type	Method	Description
Mono<Object>	onBeforeSave(Object entity, OutboundRow row, SqlIdentifier table)	Entity callback method invoked before a domain object is saved.

Methods inherited from class java.lang.Object

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

Constructor Details

IdGeneratingEntityCallback

public IdGeneratingEntityCallback(MappingContext<RelationalPersistentEntity<?>,? extends RelationalPersistentProperty> context,
 R2dbcDialect dialect,
 DatabaseClient databaseClient)

Method Details

onBeforeSave

public Mono<Object> onBeforeSave(Object entity,
 OutboundRow row,
 SqlIdentifier table)

Description copied from interface: BeforeSaveCallback

Entity callback method invoked before a domain object is saved. Can return either the same or a modified instance of the domain object and can modify OutboundRow contents. This method is called after converting the entity to a OutboundRow so effectively the row is used as outcome of invoking this callback. Changes to the domain object are not taken into account for saving, only changes to the row. Only transient fields of the entity should be changed in this callback. To change persistent the entity before being converted, use the BeforeConvertCallback.

Specified by:

onBeforeSave in interface BeforeSaveCallback<Object>

Parameters:

entity - the domain object to save.

row - OutboundRow representing the entity.

table - name of the table.

Returns:

the domain object to be persisted.