El siguiente es mi código Aquí estoy usando múltiples listas para obtener datos de la base de datos. Al recuperar datos de la consulta hql, se muestra una excepción.

Clase pojo

public class BillDetails implements java.io.Serializable {

private Long billNo;
// other fields
@LazyCollection(LazyCollectionOption.FALSE)
private List<BillPaidDetails> billPaidDetailses = new ArrayList<BillPaidDetails>();
private Set productReplacements = new HashSet(0);
@LazyCollection(LazyCollectionOption.FALSE)
private List<BillProduct> billProductList = new ArrayList<BillProduct>();
//getter and setter
}

archivo hmb.xml

<class name="iland.hbm.BillDetails" table="bill_details" catalog="retail_shop">
        <id name="billNo" type="java.lang.Long">
            <column name="bill_no" />
            <generator class="identity" />
        </id>
 <bag name="billProductList" table="bill_product" inverse="true" lazy="false" fetch="join">
            <key>
                <column name="bill_no" not-null="true" />
            </key>
            <one-to-many class="iland.hbm.BillProduct" />
        </bag>
        <bag name="billPaidDetailses" table="bill_paid_details" inverse="true" lazy="false" fetch="select">
            <key>
                <column name="bill_no" not-null="true" />
            </key>
            <one-to-many class="iland.hbm.BillPaidDetails" />
        </bag>
        <set name="productReplacements" table="product_replacement" inverse="true" lazy="false" fetch="join">
            <key>
                <column name="bill_no" not-null="true" />
            </key>
            <one-to-many class="iland.hbm.ProductReplacement" />
        </set>
    </class>

Consulta hql

String hql = "select distinct bd,sum(bpds.amount) from BillDetails as bd "
                    + "left join fetch bd.customerDetails as cd "
                    + "left join fetch bd.billProductList as bpd "
                    + "left join fetch bpd.product as pd "
                    +"left join fetch bd.billPaidDetailses as bpds "
                    + "where bd.billNo=:id "
                    + "and bd.client.id=:cid ";

Estoy intentando seguir la consulta para obtener datos de la base de datos, pero esto muestraorg.hibernate.loader.MultipleBagFetchException: cannot simultaneously fetch multiple bags Cómo resolver esto