AbstractEntity.java

/*
 * Copyright 2012-2015 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.springsource.restbucks.core;

import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.MappedSuperclass;
import javax.persistence.Version;

import lombok.EqualsAndHashCode;
import lombok.Getter;
import lombok.ToString;

import org.springframework.hateoas.Identifiable;

import com.fasterxml.jackson.annotation.JsonIgnore;

/**
 * Base class for entity implementations. Uses a {@link Long} id.
 * 
 * @author Oliver Gierke
 */
@MappedSuperclass
@Getter
@ToString
@EqualsAndHashCode
public class AbstractEntity implements Identifiable<Long> {

	private final @Id @GeneratedValue(strategy = GenerationType.AUTO) @JsonIgnore Long id;
	private @Version Long version;

	protected AbstractEntity() {
		this.id = null;
	}
}