Support @Inject EntityManager

[hantsy]

JPA 3.2 should support injecting an EntityManager or EntityManagerFactory by @Inject.

I created a simple example to verify it but found it did not work as expected.

The testing env is:

• Java 21
• Glassfish 8.0.0 M6 with built-in EclipseLink 5.0.0 B02

Add scope and qualifier in the persistence.xml file.

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="3.2" xmlns="https://jakarta.ee/xml/ns/persistence"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="https://jakarta.ee/xml/ns/persistence https://jakarta.ee/xml/ns/persistence/persistence_3_2.xsd">
    <persistence-unit name="defaultPU" transaction-type="JTA">
        <qualifier>com.example.employee.MyCustom</qualifier>
        <scope>jakarta.enterprise.context.ApplicationScoped</scope>
....

I tried to inject it with the custom qualifier like this.

@ApplicationScoped
public class EmployeeRepository {

    @Inject
    @MyCustom
    EntityManager entityManager;

    public List<Employee> allEmployees() {
        return entityManager.createQuery("select p from Employee p", Employee.class)
                .getResultList();
    }
}

And I got the following exception:

Unsatisfied dependencies for type EntityManager with qualifiers @MyCustom
  at injection point [BackedAnnotatedField] @Inject @MyCustom com.example.employee.EmployeeRepository.entityManager
  at com.example.employee.EmployeeRepository.entityManager(EmployeeRepository.java:0)