Pemodelan UUID dalam entitas Hibernate terhadap MySQL

Cobalah seperti ini:

    public class BaseEntity{

    @Column(nullable = false)
    private String uuid;

    public BaseEntity(){
         setUuid(UUID.randomUUID().toString());
    }   

    public String getUuid() {
        return uuid;
    }

    public void setUuid(String uuid) {
        this.uuid = uuid;
    }

  @PrePersist
    public void prePersist(){

        if(null == getUuid())
             setUuid(UUID.randomUUID().toString());
 }

    ....

Definisi kolom:

uuid varchar(255) DEFAULT NULL

Saat membuat UUID gunakan toString cara:

entity.setUuid(UUID.randomUUID().toString())