Sort in Display Tag

Question

Hi,
I am using display Tag to paginate a table. I am sorting the columns in the table by giving
Sort="list" in display:table and
sortable="true" in display:column
Now i am facing problems in sorting a few columns as the values in the columns are numbers like Date (DD-MM-YYYY HH:MM:SS) and not string.
How can these be sorted?
Please help,
Thank you.

Answer 1

If it's the same display:table component I'm thinking of, then....
If the actual object is a Comparable object (like Date) then it can be.
Otherwise, there is a column attribute called sortByProperty, whereby you can create a method in a decorator class for this property that should return a Comparable object that will be used...
<display:column property="prop" title="title" sort="true" sortByProperty="comparable" />
     public Comparable getComparable() {
          // create some Comparable object, maybe a string representation of the object for the column
          // or some other object that implements that interface....
     }