Hello all,
I would like to ask a few questions about RowSetDynaClass.
I can successfully set up one in a DAO class and include it in the
request scope of an action class to forward to a JSP.
The problem is with the JSP.
Problem number one:
- If the bean is null or empty I have an error, that is if the database
does not return anything. So is there a way to check if it is null or empty
before iterating so that I have no errors? Further, if the bean is not
in the request scope I also have an error saying that the bean was not
defined. How can I avoid this error? That is check to see if there is a
rowSet bean before using it in the JSP?
Problem number two:
- The following code iterates the entire cols set and write all the
columns from that row:
<logic:iterate id="row" name="rowSet" property="rows>
<tr>
<logic:iterate id="col" name="cols">
<td>
<bean:write name="row" property="<%=((DynaProperty)col).getName()%>"/>
</td>
</tr>
</logic:html>
OK, the second iterate writes as many <td></td> as the number of columns
for that row. However I wanted to do that for each and every column as I
need to add links to a few. Hence, shall I strip the inner most iterate
and have <td></td> for each column? How can I get an
specific column name? Shall I pass that to .getName() function so that
.getName("column1") ?
How does it work?
Thanks,
C.F.
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