Ch18/hibernate-ogm code does not work

[Mehdi-HAFID]

When I try to run the test class HibernateOGMTest I get for mongodb

javax.persistence.PersistenceException: Unable to build entity manager factory

main.HibernateOGMTest.setUp(HibernateOGMTest.java:26)

one of the warning says
WARN: HHH015016: Encountered a deprecated javax.persistence.spi.PersistenceProvider [org.hibernate.ejb.HibernatePersistence]; use [org.hibernate.jpa.HibernatePersistenceProvider] instead.

error out here
entityManagerFactory = Persistence.createEntityManagerFactory("ch18.hibernate_ogm");

persistence.xml & pom.xml are exact match as the source code so no typo there.

But when I changed to using neo4j instead of mongodb there is no error anymore and the tests pass.
can anyone confirm that the issue exists for them too?

[mklinkj]

Hello

According to the Korean translator's explanation, using the latest version of MongoDB, there was an error, and when using version 5.0, there was no error.

I also tried running it in a MongoDB 5.0.26 environment, and confirmed that the test code passes.

root@mongodb_docker_host:/# mongo --version
MongoDB shell version v5.0.26
Build Info: {
    "version": "5.0.26",
    ...

To resolve class access exceptions to modules not registered as unnamed modules, and file encoding warnings (my Windows Terminal Encoding: MS949), I also added the following to the pom.xml

• Exception for class access to modules not registered as unnamed modules

  Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make protected final java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain) throws java.lang.ClassFormatError accessible: module java.base does not "opens java.lang" to unnamed module @20322d26
  ...
  

  <plugin>
      <artifactId>maven-surefire-plugin</artifactId>
      <version>2.22.2</version>
      <configuration>
          <includes>
              <include>**/*.java</include>
          </includes>
          <argLine>
              --add-opens java.base/java.lang=ALL-UNNAMED
          </argLine>
      </configuration>
  </plugin>

  • The test didn't fail without the above JVM options added, but once they were added, the warning was no longer exposed.

• File encoding warnings

  [WARNING] File encoding has not been set, using platform encoding MS949, i.e. build is platform dependent!
  

      <properties>
          <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
      </properties>

  • Unless your Windows terminal encoding is multibyte, I don't think you need to set sourceEncoding to UTF-8.

Result: mvn clean test

have a nice day. 👍

---

I think the more specific cause is that the mongo-java-driver version used by hibernate-ogm-mongodb:4.2.0.Final is old.

• https://central.sonatype.com/artifact/org.hibernate.ogm/hibernate-ogm-mongodb/4.2.0.Final/dependencies
• https://central.sonatype.com/artifact/org.mongodb/mongo-java-driver/2.13.1