@WebMethod(operationName = "ReadInvoiceIn")
    public ArrayList<InvoiceIn> ReadInvoiceIn(@WebParam(name = "inv_in_id") String inv_in_id) {
            InvoiceIn inv_in  = new InvoiceIn();
            ArrayList<InvoiceIn> inv_ins = new ArrayList<InvoiceIn>();
            ArrayList<QueryCriteria> qc = new ArrayList<QueryCriteria>();
            if(!inv_in_id.equals("-1")){
                qc.add(new QueryCriteria("inv_in_id", inv_in_id, Operand.EQUALS));
            }
            ArrayList<String> fields = new ArrayList<String>();
            ArrayList<QueryOrder> order = new ArrayList<QueryOrder>();
        try {
           inv_ins = inv_in.Read(qc, fields, order);
        } catch (SQLException ex) {
            Logger.getLogger(JAX_WS.class.getName()).log(Level.SEVERE, null, ex);
        }
            if(inv_ins.isEmpty()){
                return null;
            }
        return inv_ins;
    }