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DATAJDBC-197 - Repositories find methods now emit AfterLoadEvents as intended.

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Event publishing moved into the JdbcEntityTemplate in order to ensure events for AggregateRoots.

Removed superfluous AggregateChange from AfterCreation event.

Original pull request: #58.
This commit is contained in:
Jens Schauder
2018-04-11 12:14:12 +02:00
committed by Mark Paluch
parent d4b2eca43a
commit fbac3a5529
5 changed files with 88 additions and 138 deletions
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57
src/main/java/org/springframework/data/jdbc/core/EventPublishingEntityRowMapper.java
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@@ -1,57 +0,0 @@
/*
* Copyright 2017-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.data.jdbc.core;
import lombok.NonNull;
import lombok.RequiredArgsConstructor;
import java.sql.ResultSet;
import java.sql.SQLException;
import org.springframework.context.ApplicationEventPublisher;
import org.springframework.data.jdbc.mapping.event.AfterCreation;
import org.springframework.data.jdbc.mapping.event.Identifier;
import org.springframework.data.jdbc.mapping.model.JdbcPersistentEntityInformation;
import org.springframework.jdbc.core.RowMapper;
/**
* A {@link RowMapper} that publishes events after a delegate, did the actual work of mapping a {@link ResultSet} to an
* entityInformation.
*
* @author Jens Schauder
* @since 2.0
*/
@RequiredArgsConstructor
public class EventPublishingEntityRowMapper<T> implements RowMapper<T> {
private final @NonNull RowMapper<T> delegate;
private final @NonNull JdbcPersistentEntityInformation<T, ?> entityInformation;
private final @NonNull ApplicationEventPublisher publisher;
/*
* (non-Javadoc)
* @see org.springframework.jdbc.core.RowMapper#mapRow(java.sql.ResultSet, int)
*/
@Override
public T mapRow(ResultSet resultSet, int i) throws SQLException {
T instance = delegate.mapRow(resultSet, i);
publisher.publishEvent(new AfterCreation(Identifier.of(entityInformation.getRequiredId(instance)), instance, null));
return instance;
}
}

29
src/main/java/org/springframework/data/jdbc/core/JdbcEntityTemplate.java
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@@ -23,6 +23,7 @@ import org.springframework.data.jdbc.core.conversion.AggregateChange.Kind;
import org.springframework.data.jdbc.core.conversion.Interpreter;
import org.springframework.data.jdbc.core.conversion.JdbcEntityDeleteWriter;
import org.springframework.data.jdbc.core.conversion.JdbcEntityWriter;
import org.springframework.data.jdbc.mapping.event.AfterCreation;
import org.springframework.data.jdbc.mapping.event.AfterDelete;
import org.springframework.data.jdbc.mapping.event.AfterSave;
import org.springframework.data.jdbc.mapping.event.BeforeDelete;
@@ -90,7 +91,12 @@ public class JdbcEntityTemplate implements JdbcEntityOperations {
@Override
public <T> T findById(Object id, Class<T> domainType) {
return accessStrategy.findById(id, domainType);
T entity = accessStrategy.findById(id, domainType);
if (entity != null) {
publishAfterCreation(id, entity);
}
return entity;
}
@Override
@@ -100,12 +106,18 @@ public class JdbcEntityTemplate implements JdbcEntityOperations {
@Override
public <T> Iterable<T> findAll(Class<T> domainType) {
return accessStrategy.findAll(domainType);
Iterable<T> all = accessStrategy.findAll(domainType);
publishAfterCreation(all);
return all;
}
@Override
public <T> Iterable<T> findAllById(Iterable<?> ids, Class<T> domainType) {
return accessStrategy.findAllById(ids, domainType);
Iterable<T> allById = accessStrategy.findAllById(ids, domainType);
publishAfterCreation(allById);
return allById;
}
@Override
@@ -161,4 +173,15 @@ public class JdbcEntityTemplate implements JdbcEntityOperations {
jdbcEntityDeleteWriter.write(null, aggregateChange);
return aggregateChange;
}
private <T> void publishAfterCreation(Iterable<T> all) {
all.forEach(e -> {
publishAfterCreation(context.getRequiredPersistentEntityInformation((Class<T>) e.getClass()).getRequiredId(e), e);
});
}
private <T> void publishAfterCreation(Object id, T entity) {
publisher.publishEvent(new AfterCreation(Identifier.of(id), entity));
}
}

6
src/main/java/org/springframework/data/jdbc/mapping/event/AfterCreation.java
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@@ -15,7 +15,6 @@
*/
package org.springframework.data.jdbc.mapping.event;
import org.springframework.data.jdbc.core.conversion.AggregateChange;
import org.springframework.data.jdbc.mapping.event.Identifier.Specified;
/**
@@ -32,9 +31,8 @@ public class AfterCreation extends JdbcEventWithIdAndEntity {
/**
* @param id of the entity
* @param entity the newly instantiated entity.
* @param change
*/
public AfterCreation(Specified id, Object entity, AggregateChange change) {
super(id, entity, change);
public AfterCreation(Specified id, Object entity) {
super(id, entity, null);
}
}