How to extract all customer in X++

A year ago, I have to write a custom AIF service, where I have to extract All customer in Particular Legal Entity. For this purpose I have to create data Contract Classes and then these populate them and return from Service. The Customer Extraction on AIF will done on Customer Table level. But Address and Contact will be extracted from at DirPartyPostalAddressView and DirPartyContactInfoView
Code will be as follow.

List CustomerList;
    List addresses;
    List Contacts;
    CustomerDataContract objCust;
   
     CustAddressDataContract               objCustAC;
    CustContactDataContract               objCustCC;
  
    
    CustTable custtable;
    
    DirPartyPostalAddressView   addressView;
    DirPartyContactInfoView     contactView;
    DirPartyPrimaryContactInfoView partyprimaryView;
    int chunkSize = 10;

    while SELECT *
    FROM  custtable     
    {
        if(chunkSize >0)
        {
           objCust = new revCustomerDataContract();
           objCustAC = new revCustAddressDataContract();
           objCustCC = new revCustContactDataContract();


           objCust.parmAccountNum(custtable.AccountNum);
         objCust.parmCurrencyCode(custtable.Currency);
            //objCust.parmASNFlg(custtable.
            objCust.parmCustGroupId(custtable.CustGroup);
            objCust.parmOrganizationName(custtable.OrgId);
            objCust.parmInvoiceAccount(custtable.InvoiceAccount);
            objCust.parmCompanyChainId(custtable.CompanyChainId);
            objCust.parmPaymTermId (custtable.PaymTermId);
            objCust.parmPaymMode(custtable.PaymMode);
            objCust.parmCreditLimit(custtable.CreditMax);
            objCust.parmSiteId(custtable.InventSiteId);
            objCust.parmWarehouse(custtable.InventLocation);
            objCust.parmTaxGroup(custtable.TaxGroup);
            objCust.parmPriceGroup(custtable.PriceGroup);
            objCust.parmLineDisc(custtable.LineDisc);
            objCust.parmCountryId(custtable.PartyCountry);

           

              while SELECT *
              FROM  addressView where addressView.Party == custtable.Party
               {

                  objCustAC.parmStreet(addressView.Street);
                  objCustAC.parmCity(addressView.City);
                  objCustAC.parmState(addressView.state);
                  objCustAC.parmZip(addressView.ZipCode);
                  objCustAC.parmCountry(addressView.Address);
                  objCustAC.parmAccountNum(vendtable.AccountNum);

                  addresses.addEnd(objCustAC);

               }
              while SELECT *
              FROM  contactView where contactView.Party == custtable.Party
              {
                  objCustCC.parmAccountNum(custtable.AccountNum);
                  objCustCC.parmContactType(contactView.Type);
                  objCustCC.parmLocationName(contactView.LocationName);
                  objCustCC.parmLocator(contactView.Locator);
                  objCustCC.parmLocatorExtension(contactView.LocatorExtension);
                  objCustCC.parmPrimary(contactView.IsPrimary);


           
                 Contacts.addEnd(objCustCC);

              }
              objCust.parmAddresses(addresses);
              objCust.parmContacts(Contacts);
              vendorsList.addEnd(objCust);
       }
       chunkSize--;

   }