#1149 - Refactor move PersistenceContextUtil into ... io.ebeaninternal

src/main/java/io/ebeaninternal/server/deploy/PersistenceContextUtil.java

@@ -0,0 +1,21 @@
+package io.ebeaninternal.server.deploy;
+
+import javax.persistence.Entity;
+
+/**
+ * Utility to find the root bean type.
+ */
+public class PersistenceContextUtil {
+
+  /**
+   * Find and return the root bean type for the given class.
+   */
+  public static Class<?> root(Class<?> beanType) {
+    Class<?> parent = beanType.getSuperclass();
+    while (parent != null && parent.isAnnotationPresent(Entity.class)) {
+      beanType = parent;
+      parent = parent.getSuperclass();
+    }
+    return beanType;
+  }
+}