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Spring Data Relational support
/*
* Copyright 2017-2023 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
*
* https://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.relational.core.mapping.event;
import org.springframework.data.relational.core.conversion.AggregateChange;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;
/**
* Super class for events produced during deleting an aggregate. Such events have an {@link Identifier} and an
* {@link AggregateChange} and may also have an entity if the entity was provided to the method performing the delete.
*
* @author Jens Schauder
* @since 2.0
*/
public abstract class RelationalDeleteEvent extends AbstractRelationalEvent
implements WithId, WithAggregateChange {
private static final long serialVersionUID = -8071323168471611098L;
private final Identifier id;
private final @Nullable E entity;
private final AggregateChange change;
/**
* @param id the identifier of the aggregate that gets deleted. Must not be {@literal null}.
* @param entity is the aggregate root that gets deleted. Might be {@literal null}.
* @param change the {@link AggregateChange} for the deletion containing more detailed information about the deletion
*/
RelationalDeleteEvent(Identifier id, @Nullable E entity, AggregateChange change) {
super(id);
Assert.notNull(id, "Id must not be null.");
Assert.notNull(change, "Change must not be null.");
this.id = id;
this.entity = entity;
this.change = change;
}
@Override
public Identifier getId() {
return id;
}
@Override
@Nullable
public E getEntity() {
return entity;
}
@Override
public AggregateChange getAggregateChange() {
return change;
}
@Override
public Class getType() {
return change.getEntityType();
}
}