DATAJDBC-400 - Remove Identifier from callbacks.

Retrieval of the Identifier has been shown to cost significant performance.

Original pull request: #164.

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/core/JdbcAggregateTemplate.java

@@ -380,14 +380,14 @@ public class JdbcAggregateTemplate implements JdbcAggregateOperations {
 
 		publisher.publishEvent(new AfterLoadEvent(identifier, entity));
 
-		return entityCallbacks.callback(AfterLoadCallback.class, entity, identifier);
+		return entityCallbacks.callback(AfterLoadCallback.class, entity);
 	}
 
 	private <T> T triggerBeforeConvert(T aggregateRoot, @Nullable Object id) {
 
 		Identifier identifier = Identifier.ofNullable(id);
 
-		return entityCallbacks.callback(BeforeConvertCallback.class, aggregateRoot, identifier);
+		return entityCallbacks.callback(BeforeConvertCallback.class, aggregateRoot);
 	}
 
 	private <T> T triggerBeforeSave(T aggregateRoot, @Nullable Object id, AggregateChange<T> change) {
@@ -400,7 +400,7 @@ public class JdbcAggregateTemplate implements JdbcAggregateOperations {
 				change //
 		));
 
-		return entityCallbacks.callback(BeforeSaveCallback.class, aggregateRoot, identifier, change);
+		return entityCallbacks.callback(BeforeSaveCallback.class, aggregateRoot, change);
 	}
 
 	private <T> T triggerAfterSave(T aggregateRoot, Object id, AggregateChange<T> change) {
@@ -413,7 +413,7 @@ public class JdbcAggregateTemplate implements JdbcAggregateOperations {
 				change //
 		));
 
-		return entityCallbacks.callback(AfterSaveCallback.class, aggregateRoot, identifier);
+		return entityCallbacks.callback(AfterSaveCallback.class, aggregateRoot);
 	}
 
 	private <T> void triggerAfterDelete(@Nullable T aggregateRoot, Object id, AggregateChange<?> change) {
@@ -423,7 +423,7 @@ public class JdbcAggregateTemplate implements JdbcAggregateOperations {
 		publisher.publishEvent(new AfterDeleteEvent(identifier, Optional.ofNullable(aggregateRoot), change));
 
 		if (aggregateRoot != null) {
-			entityCallbacks.callback(AfterDeleteCallback.class, aggregateRoot, identifier);
+			entityCallbacks.callback(AfterDeleteCallback.class, aggregateRoot);
 		}
 	}
 
@@ -435,7 +435,7 @@ public class JdbcAggregateTemplate implements JdbcAggregateOperations {
 		publisher.publishEvent(new BeforeDeleteEvent(identifier, Optional.ofNullable(aggregateRoot), change));
 
 		if (aggregateRoot != null) {
-			return entityCallbacks.callback(BeforeDeleteCallback.class, aggregateRoot, identifier, change);
+			return entityCallbacks.callback(BeforeDeleteCallback.class, aggregateRoot, change);
 		}
 
 		return null;

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/repository/support/JdbcQueryLookupStrategy.java

@@ -23,6 +23,7 @@ import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.data.jdbc.core.convert.EntityRowMapper;
 import org.springframework.data.jdbc.core.convert.JdbcConverter;
 import org.springframework.data.jdbc.repository.QueryMappingConfiguration;
+import org.springframework.data.mapping.callback.EntityCallbacks;
 import org.springframework.data.projection.ProjectionFactory;
 import org.springframework.data.relational.core.mapping.RelationalMappingContext;
 import org.springframework.data.relational.core.mapping.RelationalPersistentEntity;
@@ -47,6 +48,7 @@ import org.springframework.jdbc.core.namedparam.NamedParameterJdbcOperations;
 class JdbcQueryLookupStrategy implements QueryLookupStrategy {
 
 	private final ApplicationEventPublisher publisher;
+	private final EntityCallbacks callbacks;
 	private final RelationalMappingContext context;
 	private final JdbcConverter converter;
 	private final QueryMappingConfiguration queryMappingConfiguration;
@@ -64,7 +66,7 @@ class JdbcQueryLookupStrategy implements QueryLookupStrategy {
 
 		RowMapper<?> mapper = queryMethod.isModifyingQuery() ? null : createMapper(queryMethod);
 
-		return new JdbcRepositoryQuery(publisher, context, queryMethod, operations, mapper);
+		return new JdbcRepositoryQuery(publisher, callbacks, context, queryMethod, operations, mapper);
 	}
 
 	private RowMapper<?> createMapper(JdbcQueryMethod queryMethod) {

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/repository/support/JdbcRepositoryFactory.java

@@ -149,7 +149,7 @@ public class JdbcRepositoryFactory extends RepositoryFactorySupport {
 		if (key == null || key == QueryLookupStrategy.Key.CREATE_IF_NOT_FOUND
 				|| key == QueryLookupStrategy.Key.USE_DECLARED_QUERY) {
 
-			JdbcQueryLookupStrategy strategy = new JdbcQueryLookupStrategy(publisher, context, converter,
+			JdbcQueryLookupStrategy strategy = new JdbcQueryLookupStrategy(publisher, entityCallbacks, context, converter,
 					queryMappingConfiguration, operations);
 			return Optional.of(strategy);
 		}

spring-data-jdbc/src/main/java/org/springframework/data/jdbc/repository/support/JdbcRepositoryQuery.java

@@ -21,8 +21,10 @@ import java.util.List;
 import org.springframework.beans.BeanUtils;
 import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.dao.EmptyResultDataAccessException;
+import org.springframework.data.mapping.callback.EntityCallbacks;
 import org.springframework.data.relational.core.mapping.RelationalMappingContext;
 import org.springframework.data.relational.core.mapping.RelationalPersistentEntity;
+import org.springframework.data.relational.core.mapping.event.AfterLoadCallback;
 import org.springframework.data.relational.core.mapping.event.AfterLoadEvent;
 import org.springframework.data.relational.core.mapping.event.Identifier;
 import org.springframework.data.repository.query.RepositoryQuery;
@@ -49,6 +51,7 @@ class JdbcRepositoryQuery implements RepositoryQuery {
 	private static final String PARAMETER_NEEDS_TO_BE_NAMED = "For queries with named parameters you need to provide names for method parameters. Use @Param for query method parameters, or when on Java 8+ use the javac flag -parameters.";
 
 	private final ApplicationEventPublisher publisher;
+	private final EntityCallbacks callbacks;
 	private final RelationalMappingContext context;
 	private final JdbcQueryMethod queryMethod;
 	private final NamedParameterJdbcOperations operations;
@@ -64,8 +67,9 @@ class JdbcRepositoryQuery implements RepositoryQuery {
 	 * @param operations must not be {@literal null}.
 	 * @param defaultRowMapper can be {@literal null} (only in case of a modifying query).
 	 */
-	JdbcRepositoryQuery(ApplicationEventPublisher publisher, RelationalMappingContext context,
-			JdbcQueryMethod queryMethod, NamedParameterJdbcOperations operations, RowMapper<?> defaultRowMapper) {
+	JdbcRepositoryQuery(ApplicationEventPublisher publisher, @Nullable EntityCallbacks callbacks,
+			RelationalMappingContext context, JdbcQueryMethod queryMethod, NamedParameterJdbcOperations operations,
+			RowMapper<?> defaultRowMapper) {
 
 		Assert.notNull(publisher, "Publisher must not be null!");
 		Assert.notNull(context, "Context must not be null!");
@@ -77,6 +81,7 @@ class JdbcRepositoryQuery implements RepositoryQuery {
 		}
 
 		this.publisher = publisher;
+		this.callbacks = callbacks == null ? EntityCallbacks.create() : callbacks;
 		this.context = context;
 		this.queryMethod = queryMethod;
 		this.operations = operations;
@@ -214,7 +219,8 @@ class JdbcRepositoryQuery implements RepositoryQuery {
 	@Nullable
 	private ResultSetExtractor determineResultSetExtractor(@Nullable RowMapper<?> rowMapper) {
 
-		Class<? extends ResultSetExtractor> resultSetExtractorClass = (Class<? extends ResultSetExtractor>) queryMethod.getResultSetExtractorClass();
+		Class<? extends ResultSetExtractor> resultSetExtractorClass = (Class<? extends ResultSetExtractor>) queryMethod
+				.getResultSetExtractorClass();
 
 		if (isUnconfigured(resultSetExtractorClass, ResultSetExtractor.class)) {
 			return null;
@@ -262,6 +268,8 @@ class JdbcRepositoryQuery implements RepositoryQuery {
 			if (identifier != null) {
 				publisher.publishEvent(new AfterLoadEvent(Identifier.of(identifier), entity));
 			}
+
+			callbacks.callback(AfterLoadCallback.class, entity);
 		}
 
 	}

spring-data-jdbc/src/test/java/org/springframework/data/jdbc/core/JdbcAggregateTemplateUnitTests.java

@@ -27,7 +27,9 @@ import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Mock;
+import org.mockito.invocation.InvocationOnMock;
 import org.mockito.junit.MockitoJUnitRunner;
+import org.mockito.stubbing.Answer;
 import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.data.annotation.Id;
 import org.springframework.data.jdbc.core.convert.BasicJdbcConverter;
@@ -45,7 +47,6 @@ import org.springframework.data.relational.core.mapping.event.AfterSaveCallback;
 import org.springframework.data.relational.core.mapping.event.BeforeConvertCallback;
 import org.springframework.data.relational.core.mapping.event.BeforeDeleteCallback;
 import org.springframework.data.relational.core.mapping.event.BeforeSaveCallback;
-import org.springframework.data.relational.core.mapping.event.Identifier;
 
 /**
  * Unit tests for {@link JdbcAggregateTemplate}.
@@ -71,6 +72,7 @@ public class JdbcAggregateTemplateUnitTests {
 
 		template = new JdbcAggregateTemplate(eventPublisher, mappingContext, converter, dataAccessStrategy);
 		((JdbcAggregateTemplate) template).setEntityCallbacks(callbacks);
+
 	}
 
 	@Test // DATAJDBC-378
@@ -101,10 +103,9 @@ public class JdbcAggregateTemplateUnitTests {
 
 		SampleEntity last = template.save(first);
 
-		verify(callbacks).callback(BeforeConvertCallback.class, first, Identifier.ofNullable(null));
-		verify(callbacks).callback(eq(BeforeSaveCallback.class), eq(second), eq(Identifier.ofNullable(23L)),
-				any(AggregateChange.class));
-		verify(callbacks).callback(AfterSaveCallback.class, third, Identifier.of(23L));
+		verify(callbacks).callback(BeforeConvertCallback.class, first);
+		verify(callbacks).callback(eq(BeforeSaveCallback.class), eq(second), any(AggregateChange.class));
+		verify(callbacks).callback(AfterSaveCallback.class, third);
 		assertThat(last).isEqualTo(third);
 	}
 
@@ -114,13 +115,12 @@ public class JdbcAggregateTemplateUnitTests {
 		SampleEntity first = new SampleEntity(23L, "Alfred");
 		SampleEntity second = new SampleEntity(23L, "Alfred E.");
 
-		when(callbacks.callback(any(Class.class), any(), any(), any())).thenReturn(second);
+		when(callbacks.callback(any(Class.class), any(), any())).thenReturn(second);
 
 		template.delete(first, SampleEntity.class);
 
-		verify(callbacks).callback(eq(BeforeDeleteCallback.class), eq(first), eq(Identifier.of(23L)),
-				any(AggregateChange.class));
-		verify(callbacks).callback(AfterDeleteCallback.class, second, Identifier.of(23L));
+		verify(callbacks).callback(eq(BeforeDeleteCallback.class), eq(first), any(AggregateChange.class));
+		verify(callbacks).callback(AfterDeleteCallback.class, second);
 	}
 
 	@Test // DATAJDBC-393
@@ -139,8 +139,8 @@ public class JdbcAggregateTemplateUnitTests {
 
 		Iterable<SampleEntity> all = template.findAll(SampleEntity.class);
 
-		verify(callbacks).callback(AfterLoadCallback.class, alfred1, Identifier.of(23L));
-		verify(callbacks).callback(AfterLoadCallback.class, neumann1, Identifier.of(42L));
+		verify(callbacks).callback(AfterLoadCallback.class, alfred1);
+		verify(callbacks).callback(AfterLoadCallback.class, neumann1);
 
 		assertThat(all).containsExactly(alfred2, neumann2);
 	}

spring-data-jdbc/src/test/java/org/springframework/data/jdbc/repository/JdbcRepositoryIdGenerationIntegrationTests.java

@@ -173,7 +173,7 @@ public class JdbcRepositoryIdGenerationIntegrationTests {
 
 		@Bean
 		BeforeConvertCallback<ImmutableWithManualIdEntity> idGenerator() {
-			return (e, __) -> e.withId(lastId.incrementAndGet());
+			return e -> e.withId(lastId.incrementAndGet());
 		}
 	}
 }

spring-data-jdbc/src/test/java/org/springframework/data/jdbc/repository/config/EnableJdbcAuditingHsqlIntegrationTests.java

@@ -44,7 +44,6 @@ import org.springframework.data.domain.AuditorAware;
 import org.springframework.data.relational.core.mapping.NamingStrategy;
 import org.springframework.data.relational.core.mapping.event.BeforeConvertCallback;
 import org.springframework.data.relational.core.mapping.event.BeforeSaveEvent;
-import org.springframework.data.relational.core.mapping.event.Identifier;
 import org.springframework.data.repository.CrudRepository;
 import org.springframework.stereotype.Component;
 import org.springframework.test.context.ActiveProfiles;
@@ -344,7 +343,7 @@ public class EnableJdbcAuditingHsqlIntegrationTests {
 	static class OrderAssertingCallback implements BeforeConvertCallback {
 
 		@Override
-		public Object onBeforeConvert(Object entity, Identifier id) {
+		public Object onBeforeConvert(Object entity) {
 
 			assertThat(entity).isInstanceOf(AuditingAnnotatedDummyEntity.class);
 			assertThat(((AuditingAnnotatedDummyEntity) entity).createdDate).isNotNull();

spring-data-jdbc/src/test/java/org/springframework/data/jdbc/repository/support/JdbcQueryLookupStrategyUnitTests.java

@@ -30,6 +30,7 @@ import org.springframework.data.jdbc.core.convert.JdbcConverter;
 import org.springframework.data.jdbc.repository.QueryMappingConfiguration;
 import org.springframework.data.jdbc.repository.config.DefaultQueryMappingConfiguration;
 import org.springframework.data.jdbc.repository.query.Query;
+import org.springframework.data.mapping.callback.EntityCallbacks;
 import org.springframework.data.projection.ProjectionFactory;
 import org.springframework.data.relational.core.mapping.RelationalMappingContext;
 import org.springframework.data.repository.core.NamedQueries;
@@ -52,6 +53,7 @@ import org.springframework.util.ReflectionUtils;
 public class JdbcQueryLookupStrategyUnitTests {
 
 	ApplicationEventPublisher publisher = mock(ApplicationEventPublisher.class);
+	EntityCallbacks callbacks = mock(EntityCallbacks.class);
 	RelationalMappingContext mappingContext = mock(RelationalMappingContext.class, RETURNS_DEEP_STUBS);
 	JdbcConverter converter = mock(JdbcConverter.class);
 	DataAccessStrategy accessStrategy = mock(DataAccessStrategy.class);
@@ -85,7 +87,7 @@ public class JdbcQueryLookupStrategyUnitTests {
 
 	private RepositoryQuery getRepositoryQuery(String name, QueryMappingConfiguration mappingConfiguration) {
 
-		JdbcQueryLookupStrategy queryLookupStrategy = new JdbcQueryLookupStrategy(publisher, mappingContext, converter,
+		JdbcQueryLookupStrategy queryLookupStrategy = new JdbcQueryLookupStrategy(publisher, callbacks, mappingContext, converter,
 				mappingConfiguration, operations);
 
 		Method method = ReflectionUtils.findMethod(MyRepository.class, name);

spring-data-jdbc/src/test/java/org/springframework/data/jdbc/repository/support/JdbcRepositoryQueryUnitTests.java

@@ -16,10 +16,7 @@
 package org.springframework.data.jdbc.repository.support;
 
 import static org.assertj.core.api.Assertions.*;
-import static org.mockito.ArgumentMatchers.any;
-import static org.mockito.ArgumentMatchers.anyString;
-import static org.mockito.ArgumentMatchers.eq;
-import static org.mockito.ArgumentMatchers.isA;
+import static org.mockito.ArgumentMatchers.*;
 import static org.mockito.Mockito.*;
 
 import java.sql.ResultSet;
@@ -31,7 +28,9 @@ import org.junit.Test;
 import org.mockito.ArgumentCaptor;
 import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.dao.DataAccessException;
+import org.springframework.data.mapping.callback.EntityCallbacks;
 import org.springframework.data.relational.core.mapping.RelationalMappingContext;
+import org.springframework.data.relational.core.mapping.event.AfterLoadCallback;
 import org.springframework.data.relational.core.mapping.event.AfterLoadEvent;
 import org.springframework.data.repository.query.DefaultParameters;
 import org.springframework.data.repository.query.Parameters;
@@ -57,6 +56,7 @@ public class JdbcRepositoryQueryUnitTests {
 	ResultSetExtractor<?> defaultResultSetExtractor;
 	NamedParameterJdbcOperations operations;
 	ApplicationEventPublisher publisher;
+	EntityCallbacks callbacks;
 	RelationalMappingContext context;
 
 	@Before
@@ -71,6 +71,7 @@ public class JdbcRepositoryQueryUnitTests {
 		this.defaultRowMapper = mock(RowMapper.class);
 		this.operations = mock(NamedParameterJdbcOperations.class);
 		this.publisher = mock(ApplicationEventPublisher.class);
+		this.callbacks = mock(EntityCallbacks.class);
 		this.context = mock(RelationalMappingContext.class, RETURNS_DEEP_STUBS);
 	}
 
@@ -80,7 +81,8 @@ public class JdbcRepositoryQueryUnitTests {
 		doReturn(null).when(queryMethod).getAnnotatedQuery();
 
 		Assertions.assertThatExceptionOfType(IllegalStateException.class) //
-				.isThrownBy(() -> new JdbcRepositoryQuery(publisher, context, queryMethod, operations, defaultRowMapper)
+				.isThrownBy(
+						() -> new JdbcRepositoryQuery(publisher, callbacks, context, queryMethod, operations, defaultRowMapper)
 								.execute(new Object[] {}));
 	}
 
@@ -89,7 +91,8 @@ public class JdbcRepositoryQueryUnitTests {
 
 		doReturn("some sql statement").when(queryMethod).getAnnotatedQuery();
 		doReturn(RowMapper.class).when(queryMethod).getRowMapperClass();
-		JdbcRepositoryQuery query = new JdbcRepositoryQuery(publisher, context, queryMethod, operations, defaultRowMapper);
+		JdbcRepositoryQuery query = new JdbcRepositoryQuery(publisher, callbacks, context, queryMethod, operations,
+				defaultRowMapper);
 
 		query.execute(new Object[] {});
 
@@ -100,7 +103,8 @@ public class JdbcRepositoryQueryUnitTests {
 	public void defaultRowMapperIsUsedForNull() {
 
 		doReturn("some sql statement").when(queryMethod).getAnnotatedQuery();
-		JdbcRepositoryQuery query = new JdbcRepositoryQuery(publisher, context, queryMethod, operations, defaultRowMapper);
+		JdbcRepositoryQuery query = new JdbcRepositoryQuery(publisher, callbacks, context, queryMethod, operations,
+				defaultRowMapper);
 
 		query.execute(new Object[] {});
 
@@ -113,7 +117,8 @@ public class JdbcRepositoryQueryUnitTests {
 		doReturn("some sql statement").when(queryMethod).getAnnotatedQuery();
 		doReturn(CustomRowMapper.class).when(queryMethod).getRowMapperClass();
 
-		new JdbcRepositoryQuery(publisher, context, queryMethod, operations, defaultRowMapper).execute(new Object[] {});
+		new JdbcRepositoryQuery(publisher, callbacks, context, queryMethod, operations, defaultRowMapper)
+				.execute(new Object[] {});
 
 		verify(operations) //
 				.queryForObject(anyString(), any(SqlParameterSource.class), isA(CustomRowMapper.class));
@@ -125,7 +130,8 @@ public class JdbcRepositoryQueryUnitTests {
 		doReturn("some sql statement").when(queryMethod).getAnnotatedQuery();
 		doReturn(CustomResultSetExtractor.class).when(queryMethod).getResultSetExtractorClass();
 
-		new JdbcRepositoryQuery(publisher, context, queryMethod, operations, defaultRowMapper).execute(new Object[] {});
+		new JdbcRepositoryQuery(publisher, callbacks, context, queryMethod, operations, defaultRowMapper)
+				.execute(new Object[] {});
 
 		ArgumentCaptor<CustomResultSetExtractor> captor = ArgumentCaptor.forClass(CustomResultSetExtractor.class);
 
@@ -143,7 +149,8 @@ public class JdbcRepositoryQueryUnitTests {
 		doReturn(CustomResultSetExtractor.class).when(queryMethod).getResultSetExtractorClass();
 		doReturn(CustomRowMapper.class).when(queryMethod).getRowMapperClass();
 
-		new JdbcRepositoryQuery(publisher, context, queryMethod, operations, defaultRowMapper).execute(new Object[] {});
+		new JdbcRepositoryQuery(publisher, callbacks, context, queryMethod, operations, defaultRowMapper)
+				.execute(new Object[] {});
 
 		ArgumentCaptor<CustomResultSetExtractor> captor = ArgumentCaptor.forClass(CustomResultSetExtractor.class);
 
@@ -165,7 +172,8 @@ public class JdbcRepositoryQueryUnitTests {
 		when(context.getRequiredPersistentEntity(DummyEntity.class).getIdentifierAccessor(any()).getIdentifier())
 				.thenReturn("some identifier");
 
-		new JdbcRepositoryQuery(publisher, context, queryMethod, operations, defaultRowMapper).execute(new Object[] {});
+		new JdbcRepositoryQuery(publisher, callbacks, context, queryMethod, operations, defaultRowMapper)
+				.execute(new Object[] {});
 
 		verify(publisher).publishEvent(any(AfterLoadEvent.class));
 	}
@@ -181,11 +189,31 @@ public class JdbcRepositoryQueryUnitTests {
 		when(context.getRequiredPersistentEntity(DummyEntity.class).getIdentifierAccessor(any()).getIdentifier())
 				.thenReturn("some identifier");
 
-		new JdbcRepositoryQuery(publisher, context, queryMethod, operations, defaultRowMapper).execute(new Object[] {});
+		new JdbcRepositoryQuery(publisher, callbacks, context, queryMethod, operations, defaultRowMapper)
+				.execute(new Object[] {});
 
 		verify(publisher, times(2)).publishEvent(any(AfterLoadEvent.class));
 	}
 
+	@Test // DATAJDBC-400
+	public void publishesCallbacks() {
+
+		doReturn("some sql statement").when(queryMethod).getAnnotatedQuery();
+		doReturn(false).when(queryMethod).isCollectionQuery();
+		DummyEntity dummyEntity = new DummyEntity(1L);
+		doReturn(dummyEntity).when(operations).queryForObject(anyString(), any(SqlParameterSource.class),
+				any(RowMapper.class));
+		doReturn(true).when(context).hasPersistentEntityFor(DummyEntity.class);
+		when(context.getRequiredPersistentEntity(DummyEntity.class).getIdentifierAccessor(any()).getIdentifier())
+				.thenReturn("some identifier");
+
+		new JdbcRepositoryQuery(publisher, callbacks, context, queryMethod, operations, defaultRowMapper).execute(new Object[] {});
+
+		verify(publisher).publishEvent(any(AfterLoadEvent.class));
+		verify(callbacks).callback(AfterLoadCallback.class, dummyEntity);
+
+	}
+
 	/**
 	 * The whole purpose of this method is to easily generate a {@link DefaultParameters} instance during test setup.
 	 */

spring-data-relational/src/main/java/org/springframework/data/relational/core/mapping/event/AfterDeleteCallback.java

@@ -34,8 +34,7 @@ public interface AfterDeleteCallback<T> extends EntityCallback<T> {
 	 * instance of the aggregate object.
 	 *
 	 * @param aggregate the aggregate that was deleted.
-	 * @param id identifier.
 	 * @return the aggregate that was deleted.
 	 */
-	T onAfterDelete(T aggregate, Identifier id);
+	T onAfterDelete(T aggregate);
 }

spring-data-relational/src/main/java/org/springframework/data/relational/core/mapping/event/AfterLoadCallback.java

@@ -32,8 +32,7 @@ public interface AfterLoadCallback<T> extends EntityCallback<T> {
 	 * instance of the domain object.
 	 *
 	 * @param aggregate the loaded aggregate.
-	 * @param id identifier.
 	 * @return the loaded aggregate.
 	 */
-	T onAfterLoad(T aggregate, Identifier.Specified id);
+	T onAfterLoad(T aggregate);
 }

spring-data-relational/src/main/java/org/springframework/data/relational/core/mapping/event/AfterSaveCallback.java

@@ -32,8 +32,7 @@ public interface AfterSaveCallback<T> extends EntityCallback<T> {
 	 * instance of the aggregate.
 	 *
 	 * @param aggregate the saved aggregate.
-	 * @param id identifier.
 	 * @return the saved aggregate.
 	 */
-	T onAfterSave(T aggregate, Identifier.Specified id);
+	T onAfterSave(T aggregate);
 }

spring-data-relational/src/main/java/org/springframework/data/relational/core/mapping/event/BeforeConvertCallback.java

@@ -33,8 +33,7 @@ public interface BeforeConvertCallback<T> extends EntityCallback<T> {
 	 * a modified instance of the aggregate.
 	 *
 	 * @param aggregate the saved aggregate.
-	 * @param id identifier.
 	 * @return the aggregate to be persisted.
 	 */
-	T onBeforeConvert(T aggregate, Identifier id);
+	T onBeforeConvert(T aggregate);
 }

spring-data-relational/src/main/java/org/springframework/data/relational/core/mapping/event/BeforeDeleteCallback.java

@@ -36,9 +36,8 @@ public interface BeforeDeleteCallback<T> extends EntityCallback<T> {
 	 * Only transient fields of the entity should be changed in this callback.
 	 *
 	 * @param aggregate the aggregate.
-	 * @param id identifier.
 	 * @param aggregateChange the associated {@link AggregateChange}.
 	 * @return the aggregate to be deleted.
 	 */
-	T onBeforeDelete(T aggregate, Identifier id, AggregateChange<T> aggregateChange);
+	T onBeforeDelete(T aggregate, AggregateChange<T> aggregateChange);
 }

spring-data-relational/src/main/java/org/springframework/data/relational/core/mapping/event/BeforeSaveCallback.java

@@ -37,9 +37,8 @@ public interface BeforeSaveCallback<T> extends EntityCallback<T> {
 	 * converted, use the {@link BeforeConvertCallback}.
 	 *
 	 * @param aggregate the aggregate.
-	 * @param id identifier.
 	 * @param aggregateChange the associated {@link AggregateChange}.
 	 * @return the aggregate object to be persisted.
 	 */
-	T onBeforeSave(T aggregate, Identifier id, AggregateChange<T> aggregateChange);
+	T onBeforeSave(T aggregate, AggregateChange<T> aggregateChange);
 }

spring-data-relational/src/main/java/org/springframework/data/relational/domain/support/RelationalAuditingCallback.java

@@ -57,10 +57,10 @@ public class RelationalAuditingCallback implements BeforeConvertCallback<Object>
 
 	/*
 	 * (non-Javadoc)
-	 * @see org.springframework.data.relational.core.mapping.event.BeforeConvertCallback#onBeforeConvert(java.lang.Object, org.springframework.data.relational.core.mapping.event.Identifier)
+	 * @see org.springframework.data.relational.core.mapping.event.BeforeConvertCallback#onBeforeConvert(java.lang.Object)
 	 */
 	@Override
-	public Object onBeforeConvert(Object entity, Identifier id) {
+	public Object onBeforeConvert(Object entity) {
 		return handler.markAudited(entity);
 	}
 }