<class name="CustomerTransaction">
      <id name="customerTransactionId" type="string" unsaved-value="null" >
         <column name="customerTransactionId" sql-type="char(32)" not-null="true"/>
         <generator class="uuid.hex"/>
      </id>
        <timestamp name="updateTimestamp"/>
        <many-to-one name="salon" class="Salon" column="salonId"/>
        <property name="date"/>
        <many-to-one name="customer" class="Customer" column="customerId"/>
        <set name="lineItems">
             <key column="customerTransactionId"/>
           <one-to-many class="CustomerTransactionLineItem"/>
       </set>
       <set name="payments">
             <key column="customerTransactionId"/>
           <one-to-many class="CustomerTransactionPayment"/>
       </set>
   </class>

public Collection<CustomerTransaction> findBySalonIdDateRangeEmployeeIdCustomerId(long salonId, Date startDate, Date endDate, long employeeId, String customerId){
      
      Criteria crit = getSession().createCriteria(CustomerTransaction.class);
      crit.add(Restrictions.between("date", startDate, endDate));
      crit.createCriteria("salon").add(Restrictions.eq("salonId", salonId)).createCriteria("salonHours");
      if (employeeId > 0){
         crit.createCriteria("lineItems").createCriteria("employee").add(Restrictions.eq("employeeId", employeeId));
      }
      if (customerId != null && !customerId.equals("")){
         crit.createCriteria("customer").add(Restrictions.eq("customerId", customerId));
      }
      crit.addOrder(Order.asc("date"));
      return (Collection<CustomerTransaction>)crit.list();
      
   }

Hibernate: select this_.customerTransactionId as customer1_2_4_, this_.updateTimestamp as updateTi2_2_4_, this_.salonId as salonId2_4_, this_.date as date2_4_, this_.customerId as customerId2_4_, salon1_.salonId as salonId14_0_, salon1_.updateTimestamp as updateTi2_14_0_, salon1_.name as name14_0_, salon1_.description as descript4_14_0_, salon1_.address as address14_0_, salon1_.city as city14_0_, salon1_.state as state14_0_, salon1_.zip as zip14_0_, salon1_.phone as phone14_0_, salon1_.fax as fax14_0_, salon1_.email as email14_0_, salon1_.url as url14_0_, salon1_.salesTaxRate as salesTa13_14_0_, salonhours2_.salonId as salonId15_1_, salonhours2_.sundayOpen as sundayOpen15_1_, salonhours2_.sundayClose as sundayCl3_15_1_, salonhours2_.mondayOpen as mondayOpen15_1_, salonhours2_.mondayClose as mondayCl5_15_1_, salonhours2_.tuesdayOpen as tuesdayO6_15_1_, salonhours2_.tuesdayClose as tuesdayC7_15_1_, salonhours2_.wednesdayOpen as wednesda8_15_1_, salonhours2_.wednesdayClose as wednesda9_15_1_, salonhours2_.thursdayOpen as thursda10_15_1_, salonhours2_.thursdayClose as thursda11_15_1_, salonhours2_.fridayOpen as fridayOpen15_1_, salonhours2_.fridayClose as fridayC13_15_1_, salonhours2_.saturdayOpen as saturda14_15_1_, salonhours2_.saturdayClose as saturda15_15_1_, salonhours2_.timezone as timezone15_1_, customertr3_.customerTransactionLineItemId as customer1_3_2_, customertr3_.updateTimestamp as updateTi2_3_2_, customertr3_.customerTransactionId as customer3_3_2_, customertr3_.employeeId as employeeId3_2_, customertr3_.saleItemId as saleItemId3_2_, customertr3_.quantity as quantity3_2_, customertr3_.actualPrice as actualPr7_3_2_, employee4_.employeeId as employeeId5_3_, employee4_.updateTimestamp as updateTi2_5_3_, employee4_.employeeNumber as employee3_5_3_, employee4_.employeeTypeId as employee4_5_3_, employee4_.employeeStatusId as employee5_5_3_, employee4_.salonId as salonId5_3_, employee4_.firstName as firstName5_3_, employee4_.middleName as middleName5_3_, employee4_.lastName as lastName5_3_, employee4_.address as address5_3_, employee4_.city as city5_3_, employee4_.state as state5_3_, employee4_.zip as zip5_3_, employee4_.homePhone as homePhone5_3_, employee4_.cellPhone as cellPhone5_3_, employee4_.email as email5_3_, employee4_.password as password5_3_ from CustomerTransaction this_ inner join Salon salon1_ on this_.salonId=salon1_.salonId inner join SalonHours salonhours2_ on salon1_.salonId=salonhours2_.salonId inner join CustomerTransactionLineItem customertr3_ on this_.customerTransactionId=customertr3_.customerTransactionId inner join Employee employee4_ on customertr3_.employeeId=employee4_.employeeId where this_.date between ? and ? and salon1_.salonId=? and employee4_.employeeId=? order by this_.date asc