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MariaDB [controlloop]> select * from ExampleObjListEc;
+-------------+---------+
| name        | version |
+-------------+---------+
| ExampleList | 1.0.0   |
+-------------+---------+
MariaDB [controlloop]> select * from JpaExampleObjListEc_EXAMPLES;
+-------------+---------+------------+---------------+--------+-----------+
| name        | version | child_name | child_version | primed | timeStamp |
+-------------+---------+------------+---------------+--------+-----------+
| ExampleList | 1.0.0   | example1   | 1.0.0         | NULL   | NULL      |
| ExampleList | 1.0.0   | example2   | 1.0.0         | NULL   | NULL      |
+-------------+---------+------------+---------------+--------+-----------+

List of Objects using ElementCollection (hacked)

In this scenario JpaExampleLob class is not entity and neither embedded.

Code Block
languagejava
titleJpaExampleObjListEc
collapsetrue
@Entity
@Table(name = "ExampleObjListEc")
@Data
public class JpaExampleObjListEc implements Serializable {

    private static final long serialVersionUID = 1L;

    @EmbeddedId
    @VerifyKey
    @NotNull
    private ExampleKey key;

    @ElementCollection
    @Lob
    private List<@NotNull JpaExampleLob> examples;
}

Hibernate

MariaDB [controlloop]> SHOW CREATE TABLE JpaExampleObjListEc_EXAMPLES;
+------------------------------+------------------------------------------------------------------------------------------------------+
| Table                        | Create Table                                                                                         |
+------------------------------+------------------------------------------------------------------------------------------------------+
| JpaExampleObjListEc_EXAMPLES | CREATE TABLE `JpaExampleObjListEc_EXAMPLES` (
  `name` varchar(120) NOT NULL,
  `version` varchar(20) NOT NULL,
  `examples` longblob DEFAULT NULL,
  KEY `FK1a58hldurq1910ne2hbm9a7af` (`name`,`version`),
  CONSTRAINT `FK1a58hldurq1910ne2hbm9a7af` FOREIGN KEY (`name`, `version`)
REFERENCES `ExampleObjListEc` (`name`, `version`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 |
+------------------------------+------------------------------------------------------------------------------------------------------+


After saving an example:


MariaDB [controlloop]> select * from JpaExampleObjListEc_EXAMPLES;
+-------------+---------+---------------------------+
| name        | version | examples  |
+-------------+---------+---------------------------+
| ExampleList | 1.0.0   |  .... <binary code> .... |
| ExampleList | 1.0.0   |  .... <binary code> .... |
+-------------+---------+---------------------------+

Map of Objects using OneToMany

...

MariaDB [controlloop]> select * from ExampleObjMap_Example;
+---------------+----------------+------------+---------------+--------------+
| parent_name   | parent_version | child_name | child_version | EXAMPLES_KEY |
+---------------+----------------+------------+---------------+--------------+
| ExampleObjMap | 1.0.0          | example1   | 1.0.0         | MyKey1       |
| ExampleObjMap | 1.0.0          | example2   | 1.0.0         | MyKey2       |
+---------------+----------------+------------+---------------+--------------+

Hibernate

MariaDB [controlloop]> SHOW CREATE TABLE ExampleObjMap_Example;

...