add two metamodel getters to AttributeNode and Graph

api/src/main/java/jakarta/persistence/AttributeNode.java

@@ -11,10 +11,13 @@
  */
 
 // Contributors:
+//     Gavin King      - 4.0
 //     Linda DeMichiel - 2.1
 
 package jakarta.persistence;
 
+import jakarta.persistence.metamodel.Attribute;
+
 import java.util.Map;
 
 /**
@@ -37,6 +40,15 @@ public interface AttributeNode<T> {
      */
     String getAttributeName();
 
+    /**
+     * The attribute from which this branch of the graph or subgraph is forked.
+     *
+     * @return The metamodel object representing the graphed attribute
+     *
+     * @since 4.0
+     */
+    Attribute<?,T> getAttribute();
+
     /**
      * Return a map of subgraphs associated with this attribute
      * node.

api/src/main/java/jakarta/persistence/Graph.java

@@ -11,11 +11,13 @@
  */
 
 // Contributors:
+//     Gavin King      - 4.0
 //     Gavin King      - 3.2
 
 package jakarta.persistence;
 
 import jakarta.persistence.metamodel.Attribute;
+import jakarta.persistence.metamodel.ManagedType;
 import jakarta.persistence.metamodel.MapAttribute;
 import jakarta.persistence.metamodel.PluralAttribute;
 
@@ -31,6 +33,15 @@
  */
 public interface Graph<T> {
 
+    /**
+     * The managed type at which this graph or subgraph is rooted.
+     *
+     * @return The metamodel object representing the graphed type
+     *
+     * @since 4.0
+     */
+    ManagedType<T> getGraphedType();
+
     /**
      * Get an existing attribute node for the attribute with the given
      * name, or add a new attribute node if there is no existing node.