EntityHandler.java

/*
 * Copyright 2016 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.mongodb.core.mapping;

import lombok.Value;

import java.util.Optional;
import java.util.function.BiConsumer;

import org.springframework.data.util.Optionals;

/**
 * @author Oliver Gierke
 */
@Value(staticConstructor = "of")
public class EntityHandler<T extends MongoPersistentEntity<?>> {

	Optional<T> entity;

	public void doWithVersionProperty(BiConsumer<T, MongoPersistentProperty> consumer) {

		Optionals.ifAllPresent(entity, entity.flatMap(it -> it.getVersionProperty()), consumer);
	}
}