Application in Helidon MP JPA Guide fails with java.lang.ClassNotFoundException: javax.transaction.SystemException

[david-guzman]

Environment Details

• Helidon Version: 2.5.0
• Helidon MP
• JDK version: 11.0.14.1
• OS: Linux (Ubuntu 21.10)
• Docker version (if applicable): Not used
• Maven: 3.6.3

---

Problem Description

Following the steps in the Helidon MP JPA Guide https://helidon.io/docs/v2/#/mp/guides/09_jpa
generates an error when running the application with java -jar target/helidon-mp.jar

$ java -jar target/helidon-jpa.jar 
2022.04.24 18:29:07 INFO io.helidon.common.LogConfig Thread[main,5,main]: Logging at initialization configured using classpath: /logging.properties
Exception in thread "main" java.util.ServiceConfigurationError: Error instantiating :io.helidon.integrations.jta.cdi.NarayanaExtension
	at org.jboss.weld.util.ServiceLoader.createInstance(ServiceLoader.java:315)
	at org.jboss.weld.util.ServiceLoader.prepareInstance(ServiceLoader.java:247)
	at org.jboss.weld.util.ServiceLoader.loadService(ServiceLoader.java:215)
	at org.jboss.weld.util.ServiceLoader.loadServiceFile(ServiceLoader.java:185)
	at org.jboss.weld.util.ServiceLoader.reload(ServiceLoader.java:165)
	at org.jboss.weld.util.ServiceLoader.iterator(ServiceLoader.java:289)
	at org.jboss.weld.util.collections.Iterables.addAll(Iterables.java:45)
	at org.jboss.weld.environment.se.Weld.getExtensions(Weld.java:1058)
	at org.jboss.weld.environment.se.Weld.createDeployment(Weld.java:947)
	at io.helidon.microprofile.cdi.HelidonContainerImpl.init(HelidonContainerImpl.java:180)
	at io.helidon.common.context.Contexts.runInContext(Contexts.java:137)
	at io.helidon.microprofile.cdi.HelidonContainerImpl.initInContext(HelidonContainerImpl.java:136)
	at io.helidon.microprofile.cdi.HelidonContainerImpl.create(HelidonContainerImpl.java:128)
	at io.helidon.microprofile.cdi.BuildTimeInitializer.createContainer(BuildTimeInitializer.java:51)
	at io.helidon.microprofile.cdi.BuildTimeInitializer.<clinit>(BuildTimeInitializer.java:31)
	at io.helidon.microprofile.cdi.ContainerInstanceHolder.fromBuildTimeInitializer(ContainerInstanceHolder.java:58)
	at io.helidon.microprofile.cdi.ContainerInstanceHolder.get(ContainerInstanceHolder.java:50)
	at io.helidon.microprofile.cdi.Main.<clinit>(Main.java:55)
Caused by: java.lang.NoClassDefFoundError: javax/transaction/SystemException
	at java.base/java.lang.Class.getDeclaredConstructors0(Native Method)
	at java.base/java.lang.Class.privateGetDeclaredConstructors(Class.java:3137)
	at java.base/java.lang.Class.getConstructor0(Class.java:3342)
	at java.base/java.lang.Class.getDeclaredConstructor(Class.java:2553)
	at org.jboss.weld.util.ServiceLoader.createInstance(ServiceLoader.java:311)
	... 17 more
Caused by: java.lang.ClassNotFoundException: javax.transaction.SystemException
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
	... 22 more

The guide has this configuration for the JPA and JTA dependencies:

<dependency>
    <groupId>jakarta.persistence</groupId>
    <artifactId>jakarta.persistence-api</artifactId>
    <scope>provided</scope>
</dependency>
<dependency>
    <groupId>jakarta.transaction</groupId>
    <artifactId>jakarta.transaction-api</artifactId>
    <scope>provided</scope>
</dependency>

Removing the provided scope for JTA allows the application to run

Steps to reproduce

Follow the Helidon MP JPA Guide step by step https://helidon.io/docs/v2/#/mp/guides/09_jpa
Starting with a clean project

mvn -U archetype:generate \
    -DinteractiveMode=false \
    -DarchetypeGroupId=io.helidon.archetypes \
    -DarchetypeArtifactId=helidon-bare-mp \
    -DarchetypeVersion=2.5.0 \
    -DgroupId=io.helidon.example \
    -DartifactId=helidon-jpa \
    -Dpackage=io.helidon.example.jpa

[dalexandrov]

Fixed example for Helidon 3.x with #4132