@Entity
@Table(name = "customer")
public class Customer implements java.io.Serializable {

   private Integer custId;
        private String firstName;
        private String middleName;
        private String familyName;
   private Contact contact;
   private BigDecimal discount;
        @OneToMany(cascade= CascadeType.ALL, fetch= FetchType.EAGER)
        @MapKey(name="addresstype")
   private Map<Addresstype, Address> customerAddresses = new EnumMap<Addresstype, Address>(Addresstype.class);
}

@Entity
@Table(name = "address", schema="bookstore")
public class Address implements java.io.Serializable {

   private Integer addressId;
        @Enumerated(EnumType.STRING)
   private Addresstype addresstype;

<property name="hibernate.default_schema" value="bookstore"/>

select
        customer0_.custID as custID251_4_,
        customer0_.contactID as contactID251_4_,
        customer0_.discount as discount251_4_,
        customer0_.familyName as familyName251_4_,
        customer0_.firstName as firstName251_4_,
        customer0_.middleName as middleName251_4_,
        addresses1_.customer_custID as customer1_251_6_,
        address2_.addressID as addresses2_6_,
        (select
            a13.addresstype
        from
            address a13
        where
            a13.addressID=addresses1_.addresses_addressID) as formula2_6_,
        address2_.addressID as addressID283_0_,
        address2_.addresstype as addresst2_283_0_,
        address2_.city as city283_0_,
        address2_.country_ID as country8_283_0_,
        address2_.department as department283_0_,
        address2_.institution as institut5_283_0_,
        address2_.state as state283_0_,
        address2_.street as street283_0_,
        country3_.ID as ID258_1_,
        country3_.abbr as abbr258_1_,
        country3_.Name as Name258_1_,
        country3_.regionID as regionID258_1_,
        region4_.ID as ID272_2_,
        region4_.Name as Name272_2_,
        contact5_.ID as ID250_3_,
        contact5_.email as email250_3_,
        contact5_.fax as fax250_3_,
        contact5_.tel as tel250_3_,
        contact5_.web as web250_3_
    from
        bookstore.customer customer0_
    left outer join
        bookstore.customer_address addresses1_
            on customer0_.custID=addresses1_.customer_custID
    left outer join
        bookstore.address address2_
            on addresses1_.addresses_addressID=address2_.addressID
    left outer join
        bookstore.country country3_
            on address2_.country_ID=country3_.ID
    left outer join
        bookstore.region region4_
            on country3_.regionID=region4_.ID
    left outer join
        bookstore.contact contact5_
            on customer0_.contactID=contact5_.ID
    where
        customer0_.custID=?