Relation with entity type and entity id

alex-t0 · April 24, 2020, 2:00pm

I have Approval entity and some other approvable entities, e.g. Contract and Tender. Please see these classes in my example app:

github.com

alex-t0/spring-data-test/blob/master/src/main/java/dbench/models/Approval.java

package dbench.models;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Transient;

@Entity
public class Approval {
	@Id
	@GeneratedValue(strategy = GenerationType.AUTO)
	Long id;

	@Column
	private String result;

	@Column(name = "entitytype")
	private String entityType;

This file has been truncated. show original

github.com

alex-t0/spring-data-test/blob/master/src/main/java/dbench/models/Contract.java

package dbench.models;

import java.util.List;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;

import org.hibernate.annotations.Where;

@Entity
public class Contract implements ApprovableEntity {
	@Id
	@GeneratedValue(strategy = GenerationType.AUTO)

This file has been truncated. show original

(Tender class near contract, but I can leave only 2 links in one post, because I’m new user )

Seems to be simple make reference from Contract or Tender to its approvals.

But I want to make also reference from my Approval to my ApprovableEntity. What is the most straightforward way to do it in hibernate?

Topic		Replies	Views
Updating reference to entity, not fields of referenced entity Hibernate ORM	0	1056	April 27, 2020
Search for Entity with foreign key Hibernate ORM	3	1478	April 30, 2021
Hibernate add relationship between two unrelated entities (not related by foreign key) Hibernate ORM	2	1272	September 16, 2018
How to nest two abstract InheritanceType.TABLE_PER_CLASS entities with a OneToMany relationship to each other? Hibernate ORM	2	2023	April 7, 2021
How to reference a parent association using @JoinColumns without referencing the parent identifier with JPA and Hibernate Hibernate ORM	5	6744	January 8, 2019

Relation with entity type and entity id

Related topics