HHH-10540 - [enhancer] Add CompositeOwner interface only once

(cherry picked from commit 37b9a0c903)

hibernate-core/src/main/java/org/hibernate/bytecode/enhance/internal/PersistentAttributesEnhancer.java

@@ -422,18 +422,7 @@ public class PersistentAttributesEnhancer extends Enhancer {
 		}
 
 		// make sure to add the CompositeOwner interface
-		managedCtClass.addInterface( classPool.get( CompositeOwner.class.getName() ) );
+		addCompositeOwnerInterface( managedCtClass );
-
-		if ( enhancementContext.isCompositeClass( managedCtClass ) ) {
-			// if a composite have a embedded field we need to implement the TRACKER_CHANGER_NAME method as well
-			MethodWriter.write(
-					managedCtClass,
-							"public void %1$s(String name) {%n" +
-							"  if (%2$s != null) { %2$s.callOwner(\".\" + name); }%n}",
-					EnhancerConstants.TRACKER_CHANGER_NAME,
-					EnhancerConstants.TRACKER_COMPOSITE_FIELD_NAME
-			);
-		}
 
 		// cleanup previous owner
 		fieldWriter.insertBefore(
@@ -459,6 +448,30 @@ public class PersistentAttributesEnhancer extends Enhancer {
 		);
 	}
 
+	private void addCompositeOwnerInterface(CtClass managedCtClass) throws NotFoundException, CannotCompileException {
+		CtClass compositeOwnerCtClass = managedCtClass.getClassPool().get( CompositeOwner.class.getName() );
+
+		// HHH-10540 only add the interface once
+		for ( CtClass i : managedCtClass.getInterfaces() ) {
+			if ( i.subclassOf( compositeOwnerCtClass ) ) {
+				return;
+			}
+		}
+
+		managedCtClass.addInterface( compositeOwnerCtClass );
+
+		if ( enhancementContext.isCompositeClass( managedCtClass ) ) {
+			// if a composite have a embedded field we need to implement the TRACKER_CHANGER_NAME method as well
+			MethodWriter.write(
+					managedCtClass,
+					"public void %1$s(String name) {%n" +
+							"  if (%2$s != null) { %2$s.callOwner(\".\" + name); }%n}",
+					EnhancerConstants.TRACKER_CHANGER_NAME,
+					EnhancerConstants.TRACKER_COMPOSITE_FIELD_NAME
+			);
+		}
+	}
+
 	protected void enhanceAttributesAccess(
 			CtClass managedCtClass,
 			IdentityHashMap<String, PersistentAttributeAccessMethods> attributeDescriptorMap) {

hibernate-core/src/test/java/org/hibernate/test/bytecode/enhancement/dirty/SimpleEntity.java

@@ -8,6 +8,7 @@ package org.hibernate.test.bytecode.enhancement.dirty;
 
 import java.util.List;
 import java.util.Set;
+import javax.persistence.Embeddable;
 import javax.persistence.Embedded;
 import javax.persistence.Entity;
 import javax.persistence.Id;
@@ -36,6 +37,9 @@ public class SimpleEntity {
 	@Embedded
 	private Address address;
 
+	@Embedded
+	private Address address2;
+
 	public Long getId() {
 		return id;
 	}