@Target(value={METHOD,FIELD}) @Retention(value=RUNTIME) public @interface OrderBy
 The syntax of the value ordering element is an 
 orderby_list, as follows:
 
 
    orderby_list::= orderby_item [,orderby_item]*
    orderby_item::= [property_or_field_name] [ASC | DESC]
 
 
  If ASC or DESC is not specified, 
 ASC (ascending order) is assumed.
 
If the ordering element is not specified for an entity association, ordering by the primary key of the associated entity is assumed.
The property or field name must correspond to that of a persistent property or field of the associated class or embedded class within it. The properties or fields used in the ordering must correspond to columns for which comparison operators are supported.
The dot (".") notation is used to refer to an attribute within an embedded attribute. The value of each identifier used with the dot notation is the name of the respective embedded field or property.
 The OrderBy annotation may be applied to an element
 collection. When OrderBy is applied to an element collection of
 basic type, the ordering will be by value of the basic objects and
 the property or field name is not used. When specifying an ordering
 over an element collection of embeddable type, the dot notation
 must be used to specify the attribute or attributes that determine
 the ordering.  
 
 The OrderBy annotation is not used when an order
 column is specified.
 
 
    Example 1:
    
    @Entity 
    public class Course {
       ...
       @ManyToMany
       @OrderBy("lastname ASC")
       public List<Student> getStudents() {...};
       ...
    }
    
    Example 2:
    @Entity 
    public class Student {
       ...
       @ManyToMany(mappedBy="students")
       @OrderBy // ordering by primary key is assumed
       public List<Course> getCourses() {...};
       ...
    }
    Example 3: 
    @Entity 
    public class Person {
         ...
       @ElementCollection
       @OrderBy("zipcode.zip, zipcode.plusFour")
       public Set<Address> getResidences() {...};
       ...
    }
  
    @Embeddable 
    public class Address {
       protected String street;
       protected String city;
       protected String state;
       @Embedded protected Zipcode zipcode;
    }
    @Embeddable 
    public class Zipcode {
       protected String zip;
       protected String plusFour;
    }
 OrderColumnpublic abstract String value
orderby_list.  Specified as follows:
 
    orderby_list::= orderby_item [,orderby_item]*
    orderby_item::= [property_or_field_name] [ASC | DESC]
 
  If ASC or DESC is not specified,
 ASC (ascending order) is assumed.
 
If the ordering element is not specified, ordering by the primary key of the associated entity is assumed.
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