Hi,
I have been using the displaytag taglib for a while and it is really nice.
I tried writing a table decorator for a 'sortable display table', but
realized
that sorting stopped working for the decorated properties.
Here is part of the decorator
public class SchedulableDisplayTagDecorator extends TableDecorator {
private static SimpleDateFormat fmt = new SimpleDateFormat("yyyy-MM-dd
HH:mm");
public String getAperiodic() {
Schedulable s = (Schedulable) this.getCurrentRowObject();
if (s == null) return "???";
return s.isAperiodic() ? "A" : "P";
}
public String getDeadline() {
Schedulable s = (Schedulable) this.getCurrentRowObject();
if (s == null) return "???";
return s.isAperiodic() ? "" : fmt.format(s.getDeadline());
}
. . .
}
I got a NPE during the initial rendering, so I had to check for it
if (s == null) return "???";
but, it's not clear what to return.
Here is part of the row object interface
public interface Schedulable extends Serializable {
boolean isAperiodic();
Date getDeadline();
. . .
}
Finally, here is part of the table
<d:table name="schedulables" defaultsort="4" ...
decorator="<%= SchedulableDisplayTagDecorator.class.getName() %>" >
<d:column property="schedulableId" .../>
<d:column property="schedulableName" title="Name"
sortable="true" headerClass="sortable" />
<d:column property="aperiodic" title="A/P"
sortable="true" headerClass="sortable" />
<d:column property="deadline"
sortable="true" headerClass="sortable" />
. . .
</d:table>
The ID and Name columns sort, but the other two don't.
Any help on this is highly appreciated.
Kind regards,
/jens
=========================================
Jens Riboe, Chief Architect / Goyada AB
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