package org.xmx0632.deliciousfruit.entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.MappedSuperclass;
/**
* 统一定义id的entity基类.
*
* 基类统一定义id的属性名称、数据类型、列名映射及生成策略.
* Oracle需要每个Entity独立定义id的SEQUCENCE时,不继承于本类而改为实现一个Idable的接口。
*
* @author calvin
*/
// JPA 基类的标识
@MappedSuperclass
public abstract class IdEntity {
protected Long id;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
}