你有一个Hibernate实体的公共基类吗？ [英] Do you have a common base class for Hibernate entities?

问题描述

您是否拥有Hibernate实体的公共基类，即具有id，版本和其他常用属性的MappedSuperclass？

例子：

  @MappedSuperclass（） 
 public class BaseEntity {
 
 private Long id; 
私人长版; 
 ... 
 
 @Id @GeneratedValue（strategy = GenerationType.AUTO）
 public Long getId（）{return id;} 
 
 public void setId（Long id）{this.id = id;} 
 
 @Version 
 public Long getVersion（）{return version;} 
 ... 
 
 // Common properties 
 @Temporal（TemporalType.TIMESTAMP）
 public Date creationDate（）{return creationDate;} 
 ... 
} 
 
 @Entity 
 public class Customer extends BaseEntity {
 private String customerName; 
 ... 
} 
  

解决方案

这对我们很好。除了ID和创建日期，我们还有修改日期。我们还有一个实现了 Taggable 接口的中间 TaggedBaseEntity ，因为我们的某些Web应用程序的实体具有标签，如堆栈溢出问题。

Do you have a common base class for Hibernate entities, i.e. a MappedSuperclass with id, version and other common properties? Are there any drawbacks?

Example:

@MappedSuperclass()
public class BaseEntity {

    private Long id;
    private Long version;
    ...

    @Id @GeneratedValue(strategy = GenerationType.AUTO)
    public Long getId() {return id;}

    public void setId(Long id) {this.id = id;}

    @Version
    public Long getVersion() {return version;}
    ...

    // Common properties
    @Temporal(TemporalType.TIMESTAMP)
    public Date creationDate() {return creationDate;}
    ...
}

@Entity
public class Customer extends BaseEntity {
    private String customerName;
    ...
}

解决方案

This works fine for us. As well as the ID and creation date, we also have a modified date. We also have an intermediate TaggedBaseEntity that implements a Taggable interface, because some of our web application's entities have tags, like questions on Stack Overflow.

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