I18n for custom error messages into JPA entity - spring-boot

Question

I looking to understand how to internationalize JPA entity error message. I understand how its work into a controller using autowired MessageSource but in my case I want to do this into a JPA entity. I'm not intresting about using the same way as the controller issue because I think is not optimized to autowired the full MessageSource on this entity. If someone have a simple example to show me how its work with a simple entity like mine. My project using spring-boot 2.2 ; JPA ; and thymeleaf.
The entity I using:
package com.bananasplit.weblab2.entities;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.Pattern;
import javax.validation.constraints.Size;
#Entity
#Table(name = "todo")
public class Todo {
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
#Column(name = "id")
private Long id;
#Column(name = "name", nullable = false)
#NotEmpty
#Size(min=2, max=30) // error message is already internationalized here with spring-boot
private String name;
#Column(name = "category", nullable = false)
#NotEmpty
#Pattern(regexp="(WORK|PERSONAL|SPECIAL)",
message="Category must be WORK or PERSONNAL or SPECIAL.") // here is the message I want to internationalize
private String category;
public Todo() {}
public Todo(String name, String category) {
this.name = name;
this.category = category;
}
#Override
public String toString() {
return String.format(
"Todo[id=%d, name='%s', category='%s']",
id, name, category);
}
public Long getId() {
return id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getCategory() {
return category;
}
public void setCategory(String category) {
this.category = category;
}
}

Answer 1

By default Spring boot uses this ValidationMessages.properties but you can override by adding this file in resources.
#Size(min=2, max=30, message="{empty.todo.name")
private String name;
In ValidationMessages.properties file
empty.todo.name = Cannot be blank
If you want to manage which package messages should be scanned by Spring then should follow this link