#1571 - NPE in cacheable bean with embeddedid on delete

src/main/java/io/ebeaninternal/server/query/STreePropertyAssocOne.java

@@ -1,7 +1,7 @@
 package io.ebeaninternal.server.query;
 
 import io.ebean.bean.EntityBean;
-import io.ebeaninternal.server.type.ScalarType;
+import io.ebeaninternal.server.type.ScalarDataReader;
 
 public interface STreePropertyAssocOne extends STreePropertyAssoc {
 
@@ -13,7 +13,7 @@ public interface STreePropertyAssocOne extends STreePropertyAssoc {
   /**
    * Return the scalar type of the associated id property.
    */
-  ScalarType<?> getIdScalarType();
+  ScalarDataReader<?> getIdReader();
 
   /**
    * Returns true, if this relation has a foreign key.