Java – Validation does not apply to entitymanager merge()

I rarely verify my entities, such as @ notnull, and some generations, such as

@Id
@GeneratedValue(strategy = AUTO)
@Column(name = "ID")
private Long id;

@Column
@GeneratedValue(strategy = GenerationType.AUTO)
private Long referenceNumber;

However, when calling entitymanager This value is not generated when merge() Empty fields with @ notnull annotation are passed without any complaints Even IDs are not generated

Should I switch this generation in some way? How's it going? Where is it?

Solution

In addition to kafudan's answer:

>By default, if the validation provider "exists in the environment", automatic bean validation in JPA 2.0 will work, otherwise it will not work properly You can add

<validation-mode>CALLBACK</validation-mode>

Persistence. If the validation provider cannot be found XML to generate errors. > JPA does not support generating arbitrary (non ID) attributes Some JPA providers may have extensions