Use other Hibernate version on Wildfly 16

[david.tierens]

We want to use another Hibernate version (5.2.18.Final, JPA 2.1) on our application server (Wildfly V16.0) but we are getting following exception :

{"WFLYCTL0080: Failed services" => {"jboss.persistenceunit.\"david-app.ear#examplePersistenceUnit\".__FIRST_PHASE__" => "java.lang.ClassCastException: class 
org.hibernate.boot.model.naming.ImplicitNamingStrategyJpaCompliantImpl cannot be cast to class org.hibernate.boot.model.naming.ImplicitNamingStrategy 
(org.hibernate.boot.model.naming.ImplicitNamingStrategyJpaCompliantImpl is in unnamed module of loader 'org.hibernate:[e-mail]' @155c18e0; org.hibernate.boot.model.naming.ImplicitNamingStrategy
 is in unnamed module of loader '[e-mail]' @102121eb) Caused by: java.lang.ClassCastException: class org.hibernate.boot.model.naming.ImplicitNamingStrategyJpaCompliantImpl cannot be cast to class 
org.hibernate.boot.model.naming.ImplicitNamingStrategy (org.hibernate.boot.model.naming.ImplicitNamingStrategyJpaCompliantImpl is in unnamed module of loader 'org.hibernate:[e-mail]' 
@155c18e0; org.hibernate.boot.model.naming.ImplicitNamingStrategy is in unnamed module of loader '[e-mail]' @102121eb)"}}

It seems that it's trying to load 2 hibernate versions at the same time but this should be avoided with following configurations:

jboss-deployment-structure.xml (resources/META-INF) :

<?xml version="1.0" encoding="UTF-8"?>
<jboss-deployment-structure>
<deployment>
   <exclusions>
   <module name="org.hibernate" slot="main"/>
   </exclusions>
   <dependencies>
   <module name="org.hibernate" slot="5.2.18.Final"/>
   </dependencies>
</deployment> 
</jboss-deployment-structure>

persistence.xml:

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence
  http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"
  version="2.1">
   <persistence-unit name="examplePersistenceUnit" transaction-type="JTA">
   <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
   <jta-data-source>jdbc/CoreXADataSource</jta-data-source>
   <properties>
   <property name="jboss.as.jpa.providerModule" value="org.hibernate:5.2.18.Final"/>
   <property name="hibernate.show_sql" value="false"/>
   <property name="hibernate.order_inserts" value="true"/>
   <property name="hibernate.jdbc.wrap_result_sets" value="true"/>
   </properties>
</persistence-unit>

Hibernate module.xml (5.2.18.Final slot) in Wildfly :

<?xml version="1.0" encoding="UTF-8"?>
<module name="org.hibernate:5.2.18.Final" xmlns="urn:jboss:module:1.8">
<resources>
   <resource-root path="hibernate-core-5.2.18.Final.jar"/>
   <resource-root path="hibernate-entitymanager-5.2.18.Final.jar"/>
   <resource-root path="hibernate-java8-5.2.18.Final.jar"/>
</resources>

<dependencies>
   <module name="com.fasterxml.classmate"/>
   <module name="javax.api"/>
   <module name="javax.annotation.api"/>
   <module name="javax.enterprise.api"/>
   <module name="javax.persistence.api"/>
   <module name="javax.transaction.api"/>
   <module name="javax.validation.api"/>
   <module name="javax.xml.bind.api"/>
   <module name="org.antlr"/>
   <module name="org.dom4j"/>
   <module name="org.javassist" export="true"/>
   <module name="org.jboss.as.jpa.spi"/>
   <module name="org.jboss.jandex"/>
   <module name="org.jboss.logging"/>
   <module name="org.jboss.vfs"/>
   <module name="org.hibernate.commons-annotations"/>
   <module name="org.hibernate.jipijapa-hibernate5" services="import"/>
   <module name="org.infinispan.hibernate-cache" services="import" optional="true"/>
</dependencies>

Anyone has an idea why Wildfly still tries to load his default Hibernate version 5.3.9 while deploying an EAR file ?

Stackoverflow thread: java - Hibernate ClassCastException ImplicitNamingStrategyJpaCompliantImpl - Stack Overflow