Reproduce issue with RefletionOptimizr (class duplicated on classpath)

hibernate-core/src/test/java/org/hibernate/orm/test/bytecode/duplication/Client.java

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+/*
+ * SPDX-License-Identifier: Apache-2.0
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.orm.test.bytecode.duplication;
+
+import jakarta.persistence.EntityManagerFactory;
+import org.hibernate.engine.spi.SessionFactoryImplementor;
+
+/**
+ * To be loaded reflectively...
+ *
+ * @author Steve Ebersole
+ */
+public class Client {
+	public static void execute(EntityManagerFactory emf) {
+		emf.runInTransaction( (entityManager) -> {
+			entityManager.persist( new SimpleEntity( 1, "tester" ) );
+			entityManager.createQuery( "from SimpleEntity" ).getResultList();
+		} );
+	}
+
+	public static void cleanup(EntityManagerFactory emf) {
+		emf.unwrap( SessionFactoryImplementor.class ).getSchemaManager().truncateMappedObjects();
+	}
+}

hibernate-core/src/test/java/org/hibernate/orm/test/bytecode/duplication/DuplicateClassTests.java

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+/*
+ * SPDX-License-Identifier: Apache-2.0
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.orm.test.bytecode.duplication;
+
+import jakarta.persistence.EntityManagerFactory;
+import jakarta.persistence.Persistence;
+import org.hibernate.dialect.H2Dialect;
+import org.hibernate.testing.orm.junit.BaseUnitTest;
+import org.hibernate.testing.orm.junit.RequiresDialect;
+import org.jboss.shrinkwrap.api.ArchivePath;
+import org.jboss.shrinkwrap.api.ArchivePaths;
+import org.jboss.shrinkwrap.api.ShrinkWrap;
+import org.jboss.shrinkwrap.api.exporter.ZipExporter;
+import org.jboss.shrinkwrap.api.spec.JavaArchive;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+
+import java.io.File;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLClassLoader;
+
+
+/**
+ * @author Steve Ebersole
+ */
+@BaseUnitTest
+@RequiresDialect( H2Dialect.class )
+public class DuplicateClassTests {
+	private ClassLoader originalTccl;
+
+	@BeforeEach
+	void storeOriginalTccl() {
+		originalTccl = Thread.currentThread().getContextClassLoader();
+	}
+
+	@AfterEach
+	void restoreOriginalTccl() {
+		Thread.currentThread().setContextClassLoader( originalTccl );
+	}
+
+	@Test
+	void testSimple(@TempDir File tempDir)
+			throws MalformedURLException, ClassNotFoundException, NoSuchMethodException, InvocationTargetException, IllegalAccessException {
+		ArchivePath path = ArchivePaths.create( "META-INF/persistence.xml" );
+
+		JavaArchive jar1 = ShrinkWrap.create( JavaArchive.class, "jar1.jar" );
+		jar1.addClasses( SimpleEntity.class );
+		jar1.addAsResource( "units/bytecode/duplication/pu1.xml", path );
+		File jar1File = new File( tempDir, "jar1.jar" );
+		jar1.as( ZipExporter.class ).exportTo( jar1File, true );
+
+		JavaArchive jar2 = ShrinkWrap.create( JavaArchive.class, "jar2.jar" );
+		jar2.addClasses( SimpleEntity.class );
+		jar2.addAsResource( "units/bytecode/duplication/pu2.xml", path );
+		File jar2File = new File( tempDir, "jar2.jar" );
+		jar2.as( ZipExporter.class ).exportTo( jar2File, true );
+
+		URL[] jarUrls = new URL[] {
+				jar1File.toURI().toURL(),
+				jar2File.toURI().toURL()
+		};
+		final URLClassLoader classLoader = new URLClassLoader( jarUrls, getClass().getClassLoader() );
+		Thread.currentThread().setContextClassLoader( classLoader );
+
+		try (EntityManagerFactory emf1 = Persistence.createEntityManagerFactory( "unit-1" )) {
+			executeUseCases( classLoader, emf1 );
+		}
+		try (EntityManagerFactory emf2 = Persistence.createEntityManagerFactory( "unit-2" )) {
+			executeUseCases( classLoader, emf2 );
+		}
+
+		{
+			JavaArchive jar3 = ShrinkWrap.create( JavaArchive.class, "jar3.jar" );
+			jar3.addClasses( SimpleEntity.class );
+			jar3.addAsResource( "units/bytecode/duplication/pu1.xml", path );
+			File jar3File = new File( tempDir, "jar3.jar" );
+			jar3.as( ZipExporter.class ).exportTo( jar3File, true );
+
+			URL[] secondaryUrls = new URL[] { jar3File.toURI().toURL() };
+			final URLClassLoader secondaryClassLoader = new URLClassLoader( secondaryUrls, getClass().getClassLoader() );
+			Thread.currentThread().setContextClassLoader( secondaryClassLoader );
+
+			try (EntityManagerFactory emf3 = Persistence.createEntityManagerFactory( "unit-1" )) {
+				executeUseCases( classLoader, emf3 );
+			}
+		}
+	}
+
+	private void executeUseCases(URLClassLoader classLoader, EntityManagerFactory entityManagerFactory)
+			throws ClassNotFoundException, NoSuchMethodException, InvocationTargetException, IllegalAccessException {
+		final Class<?> clientClass = classLoader.loadClass( "org.hibernate.orm.test.bytecode.duplication.Client" );
+		final Method executeMethod = clientClass.getDeclaredMethod( "execute", EntityManagerFactory.class );
+		final Method cleanupMethod = clientClass.getDeclaredMethod( "cleanup", EntityManagerFactory.class );
+
+		try {
+			executeMethod.invoke( null, entityManagerFactory );
+		}
+		finally {
+			cleanupMethod.invoke( null, entityManagerFactory );
+		}
+
+	}
+}

hibernate-core/src/test/java/org/hibernate/orm/test/bytecode/duplication/SimpleEntity.java

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+/*
+ * SPDX-License-Identifier: Apache-2.0
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.orm.test.bytecode.duplication;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+
+/**
+ * @author Steve Ebersole
+ */
+@Entity
+public class SimpleEntity {
+	@Id
+	private Integer id;
+	private String name;
+
+	public SimpleEntity() {
+	}
+
+	public SimpleEntity(Integer id, String name) {
+		this.id = id;
+		this.name = name;
+	}
+}

hibernate-core/src/test/resources/units/bytecode/duplication/pu1.xml

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+<!--
+  ~ SPDX-License-Identifier: Apache-2.0
+  ~ Copyright Red Hat Inc. and Hibernate Authors
+  -->
+<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="unit-1">
+        <description>
+            Persistence unit for Hibernate User Guide
+        </description>
+
+        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
+
+        <class>org.hibernate.orm.test.bytecode.duplication.SimpleEntity</class>
+
+        <properties>
+            <property name="jakarta.persistence.jdbc.driver"
+                      value="org.h2.Driver" />
+
+            <property name="jakarta.persistence.jdbc.url"
+                      value="jdbc:h2:mem:db1;DB_CLOSE_DELAY=-1" />
+
+            <property name="jakarta.persistence.jdbc.user"
+                      value="sa" />
+
+            <property name="jakarta.persistence.jdbc.password"
+                      value="" />
+
+            <property name="hibernate.show_sql"
+                      value="true" />
+
+            <property name="hibernate.hbm2ddl.auto"
+                      value="update" />
+        </properties>
+
+    </persistence-unit>
+
+</persistence>

hibernate-core/src/test/resources/units/bytecode/duplication/pu2.xml

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+<!--
+  ~ SPDX-License-Identifier: Apache-2.0
+  ~ Copyright Red Hat Inc. and Hibernate Authors
+  -->
+<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="unit-2">
+        <description>
+            Persistence unit for Hibernate User Guide
+        </description>
+
+        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
+
+        <class>org.hibernate.orm.test.bytecode.duplication.SimpleEntity</class>
+
+        <properties>
+            <property name="jakarta.persistence.jdbc.driver"
+                      value="org.h2.Driver" />
+
+            <property name="jakarta.persistence.jdbc.url"
+                      value="jdbc:h2:mem:db1;DB_CLOSE_DELAY=-1" />
+
+            <property name="jakarta.persistence.jdbc.user"
+                      value="sa" />
+
+            <property name="jakarta.persistence.jdbc.password"
+                      value="" />
+
+            <property name="hibernate.show_sql"
+                      value="true" />
+
+            <property name="hibernate.hbm2ddl.auto"
+                      value="update" />
+        </properties>
+
+    </persistence-unit>
+
+</persistence>