java JPA：重用持久性。通过覆盖数据源，在JSE和JUnit中使用jtadatasource的xml

Question

我在WildFly上部署了这个peristence.xml：

  <persistence-unit name="optaweb-employee-rostering-persistence-unit" transaction-type="JTA">
    <jta-data-source>java:jboss/datasources/ExampleDS</jta-data-source>
    ...
  </persistence-unit>

现在，我想在一个普通的Java应用程序中重用它，使用直接的JDBC连接，因此不使用JNDI：

    Map<String, String> properties = new HashMap<>();
    properties.put("javax.persistence.jdbc.driver", "org.hsqldb.jdbcDriver");
    properties.put("javax.persistence.jdbc.url", "jdbc:hsqldb:mem:testdb");
    properties.put("javax.persistence.jdbc.user", "sa");
    properties.put("javax.persistence.jdbc.password", "");

    // Overwrites transaction-type successfully 
    properties.put("javax.persistence.transactionType", "RESOURCE_LOCAL");

    // TODO overwrite jta-data-source

    EntityManagerFactory entityManagerFactory = Persistence.createEntityManagerFactory(
            "optaweb-employee-rostering-persistence-unit", properties);

如何覆盖jta-data-source

---

我尝试了许多JPA属性来覆盖^{，但没有成功：

    // Overwrites jta-data-source
    // but triggers a JNDI lookup of "" which crashes of course
    properties.put("javax.persistence.jtaDataSource", "");
    // Does not overwrite jta-data-source
    properties.put("javax.persistence.jtaDataSource", null);

    // Does not overwrite jta-data-source
    properties.put("javax.persistence.nonJtaDataSource", "foo");

我还尝试了一些特定于hibernate的属性，比如hibernate.transaction.coordinator_class和hibernate.connection.datasource，但失败的结果与上面相同