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Cassandra support for Spring Data
/*
* Copyright 2019-2021 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.cassandra.core.mapping.event;
import org.springframework.data.mapping.callback.EntityCallback;
import com.datastax.oss.driver.api.core.CqlIdentifier;
import com.datastax.oss.driver.api.core.cql.Statement;
/**
* Entity callback triggered before save of a row.
*
* @author Mark Paluch
* @since 2.2
* @see org.springframework.data.mapping.callback.EntityCallbacks
*/
@FunctionalInterface
public interface BeforeSaveCallback extends EntityCallback {
// TODO: Mutable statements
/**
* Entity callback method invoked before a domain object is saved. Can return either the same of a modified instance
* of the domain object and can modify {@link Statement} contents. This method is called after converting the
* {@code entity} to {@link Statement} so effectively the row is used as outcome of invoking this callback.
*
* @param entity the domain object to save.
* @param tableName name of the table.
* @param statement {@link Statement} representing the {@code entity} operation.
* @return the domain object to be persisted.
*/
T onBeforeSave(T entity, CqlIdentifier tableName, Statement statement);
}