Создание счета по таблице позиций

import bitel.billing.server.util.*;
import java.sql.*;
import java.util.*;
import java.math.*;
 
import bitel.billing.server.contract.bean.*;
import bitel.billing.server.bill.bean.*;
import bitel.billing.server.util.*;
import ru.bitel.bgbilling.server.util.*;
 
public void main( setup, con, conSlave )
{
bill_type = 1;
bill_type_title = "обычный";
bill_mid = 6;
mm=0; //январь
yy=2010;
acc_id=1;
 
bill_manager = new BillManager(setup,con,bill_mid, setup.getSetup().getModuleSetup(bill_mid));
 
cm = new ContractManager( con );
 
ps = con.prepareStatement("select cid from _tmp_bill_diff group by cid;");
rs = ps.executeQuery(); 
while(rs.next()) {
	cid =  rs.getInt(1);
	c = cm.getContractByID( cid );
	float sum = 0;
	bill_doc = new Bill();
	bill_doc.setCid(cid);
	bill_doc.setContractTitle(c.getTitle());
	bill_doc.setCreateDate(new Date());
	bill_doc.setMm(mm);
	bill_doc.setTypeId(bill_type);
	bill_doc.setTypeTitle(bill_type_title);
	bill_doc.setUid(0);
	bill_doc.setYy(yy);
	bill_doc.setAccountId(acc_id);
	position_value_list = new java.util.ArrayList();
//позиции основного договора
	ps1 = con.prepareStatement("select pos_id, sum(dif) from _tmp_bill_diff where cid=? group by pos_id;");
	ps1.setInt(1,cid);
	rs1 = ps1.executeQuery(); 
	while(rs1.next()) {
		pos_id = rs1.getInt(1);
		dif = rs1.getFloat(2);
		sum+=dif;
 
		posname=setup.getSetup().getModuleSetup(6).getStringValue("bill.pos."+pos_id+".name","");
		postitle=setup.getSetup().getModuleSetup(6).getStringValue("bill.pos."+pos_id+".title","");
 
		position = new Position();
		position.setId(pos_id);
		position.setName(posname);
		position.setSumm(""+dif);
		position.setTitle(postitle);
 
		position_value = new PositionValue();
		position_value.setCid(cid);
		position_value.setName(posname);
		position_value.setPosition(position);
		position_value.setPositionId(pos_id);
		position_value.setSumma(new BigDecimal(dif));
 
		position_value_list.add(position_value);
	}
 	ps1.close();
	print(new BigDecimal(sum));
	bill_doc.setSumm(new BigDecimal(sum));
	bill_manager.addBillDoc(bill_doc,position_value_list,Collections.emptyList());
} 
ps.close();
 
}