Problem in displaying a table.

Question

Hi all,
I have a simple jsp page which connects to a bean file. The bean file is suppose to return a ResultSet and display it in a form of a table with multiple entries.
However, what I would like to achieve is that if the ResultSet returns nothing (i.e. no records in the database) I would like to display a message information the user.
This is what i have done:
<% ResultSet rs = user.getProduct(userID); %>
<% if (!rs.next()) { %>                  
There are no products.
<% } else {%>
These are your products.
<table>
<tr>
<td>Product</td>
<td>Price</td>
<tr>
<% while(rs.next()) {          
String product = rs.getString("Product");
String price = rs.getString("Price");
%>
<tr>
<td> <%= product %> </td>
<td> <%= price %> </td>
</tr>
<% } // end of while statement %>
<% } // end of if else statement %>
It is able to display the ResultSet, however, because i have two rs.next() to get the rs, the curser in the database have jump to the next line, causing the final while(rs.next) to return data starting from the second line.
I don't know if the question is clear enough, but hope to get some help on this.
Thanks!
Yong

Answer 1

Hi,
just a fast answer, I cannot stay a lot...
I think is not the best solutions, but you can use a counter instead of the "if(!rs.next)" statement...
<% ResultSet rs = user.getProduct(userID); %><% int recordSetSize = 0;%>
<% //if (!rs.next()) { %>                  
//There are no products.
<% //} else {%>
<% while(rs.next()) {if (recordSetSize == 0){
These are your products.
<table>
<tr>
<td>Product</td>
<td>Price</td>
</tr><% }%>
<% //while(rs.next()) {          recordSetSize++;
String product = rs.getString("Product");
String price = rs.getString("Price");
%>
<tr>
<td> <%= product %> </td>
<td> <%= price %> </td>
</tr>
<% } // end of while statement %><%if (recordSetSize > 0){%>
</table>
<%}else{%>
There are no products.
<%}%>
<% //} // end of if else statement %>I hope be useful.
Bye.