@EntityListener是否也与@MappedSuperclass一起使用？ [英] Does @EntityListener works with @MappedSuperclass as well?

问题描述

如果我定义一个实体类并用 @MappedSuperclass 和一个 @EntityListener ，这个监听器是否也会被调用到子类中的生命周期事件？

示例：

  @MappedSuperclass 
 @EntityListeners（class = LastUpdateListener.class）
 public abstract class Animal {
 @Id private Integer ID; 
私人字符串名称; 
私人日历dateOfBirth; 
 @Transient private int age; 
私人日期lastUpdate; 
 // getters和setters 
 
 / ** 
 *根据计算在加载时设置我的瞬态属性，
 *请注意，原生Hibernate公式映射是为此更好。 
 * / 
 @PostLoad 
 public void calculateAge（）{
 Calendar birth = new GregorianCalendar（）; 
 birth.setTime（dateOfBirth）; 
 Calendar now = new GregorianCalendar（）; 
 now.setTime（new Date（））; 
 int adjust = 0; （now.get（Calendar.DAY_OF_YEAR） -  birth.get（Calendar.DAY_OF_YEAR）< 0）{
 adjust = -1; 
 if 
} 
 age = now.get（Calendar.YEAR） -  birth.get（Calendar.YEAR）+ adjust; 
 
 
 
 public class LastUpdateListener {
 / ** 
 *在任何数据库持久化之前设置的自动属性
 * / 
 @PreUpdate 
 @PrePersist 
 public void setLastUpdate（Cat o）{
 o.setLastUpdate（new Date（））; 
 
 
 $ / code $ / pre 
 $ b $ p感谢。
 <解决方案是的，在映射超类中使用@PostLoad注释的方法和LastUpdateListener的实体监听器方法被调用。  
 
 
映射超类的生命周期事件本身并不存在。像往常一样，它适用于子类。  
Folks!

If I define an Entity Class and annotate it with @MappedSuperclass and an @EntityListener,  does the listener also get called for lifecycle events within a child class?

Example:
@MappedSuperclass
@EntityListeners(class=LastUpdateListener.class)
public abstract class Animal {
    @Id private Integer id;
    private String name;
    private Calendar dateOfBirth;
    @Transient private int age;
    private Date lastUpdate;
    //getters and setters

    /**
     * Set my transient property at load time based on a calculation,
     * note that a native Hibernate formula mapping is better for this purpose.
     */
    @PostLoad
    public void calculateAge() {
        Calendar birth = new GregorianCalendar();
        birth.setTime(dateOfBirth);
        Calendar now = new GregorianCalendar();
        now.setTime( new Date() );
        int adjust = 0;
        if ( now.get(Calendar.DAY_OF_YEAR) - birth.get(Calendar.DAY_OF_YEAR) < 0) {
            adjust = -1;
        }
        age = now.get(Calendar.YEAR) - birth.get(Calendar.YEAR) + adjust;
    }
}

public class LastUpdateListener {
    /**
     * automatic property set before any database persistence
     */
    @PreUpdate
    @PrePersist
    public void setLastUpdate(Cat o) {
        o.setLastUpdate( new Date() );
    }
}
Thanks.
解决方案
Yes, method annotated with @PostLoad in mapped superclass and LastUpdateListener's entity listener methods get called. 

Such a thing as lifecycle event for mapped superclass itself does not even exist. As usual, it applies to subclass.   

                        
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