HHH-17253 Test circular type variable stack overflow in metamodel generator

tooling/metamodel-generator/src/test/java/org/hibernate/jpamodelgen/test/circulartypevariable/CircularTypeVariableTest.java

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+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
+ * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ */
+package org.hibernate.jpamodelgen.test.circulartypevariable;
+
+import org.hibernate.jpamodelgen.test.util.CompilationTest;
+import org.hibernate.jpamodelgen.test.util.TestForIssue;
+import org.hibernate.jpamodelgen.test.util.TestUtil;
+import org.hibernate.jpamodelgen.test.util.WithClasses;
+
+import org.junit.Test;
+
+import jakarta.persistence.metamodel.SetAttribute;
+
+@TestForIssue(jiraKey = "HHH-17253")
+public class CircularTypeVariableTest extends CompilationTest {
+
+    @Test
+    @WithClasses({ RoleAccess.class, User.class })
+    public void testCircularTypeVariable() {
+        TestUtil.assertMetamodelClassGeneratedFor( RoleAccess.class );
+        TestUtil.assertMetamodelClassGeneratedFor( User.class );
+    }
+
+}

tooling/metamodel-generator/src/test/java/org/hibernate/jpamodelgen/test/circulartypevariable/RoleAccess.java

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+package org.hibernate.jpamodelgen.test.circulartypevariable;
+
+import org.hibernate.annotations.Immutable;
+
+import jakarta.persistence.Access;
+import jakarta.persistence.AccessType;
+import jakarta.persistence.Id;
+import jakarta.persistence.MappedSuperclass;
+
+
+@MappedSuperclass
+@Access( AccessType.PROPERTY )
+@Immutable
+public class RoleAccess<
+		TRoleAccess extends RoleAccess<TRoleAccess,TUser>,
+		TUser extends User<TUser,TRoleAccess>> {
+
+	private Long id;
+
+	@Id
+	public Long getId() {
+		return id;
+	}
+
+	public void setId(Long id) {
+		this.id = id;
+	}
+}

tooling/metamodel-generator/src/test/java/org/hibernate/jpamodelgen/test/circulartypevariable/User.java

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+package org.hibernate.jpamodelgen.test.circulartypevariable;
+
+import java.util.Set;
+
+import jakarta.persistence.Access;
+import jakarta.persistence.AccessType;
+import jakarta.persistence.Id;
+import jakarta.persistence.MappedSuperclass;
+import jakarta.persistence.OneToMany;
+
+@MappedSuperclass
+@Access( AccessType.PROPERTY )
+public class User<
+		TUser extends User<TUser,TRoleAccess>,
+		TRoleAccess extends RoleAccess<TRoleAccess,TUser>> {
+	private Long id;
+	private Set<TRoleAccess> roleAccesses;
+
+	@Id
+	public Long getId() {
+		return id;
+	}
+
+	public void setId(Long id) {
+		this.id = id;
+	}
+
+	@OneToMany
+	public Set<TRoleAccess> getRoleAccesses() {
+		return roleAccesses;
+	}
+
+	public void setRoleAccesses(Set<TRoleAccess> roleAccesses) {
+		this.roleAccesses = roleAccesses;
+	}
+}