Is there anyway to know whether leadselection is set or not??

Hi,

Is there anyway to know whether leadselection is set or not ??

Problem scenario :

I have a table which is bound to a context node containing a database table. Based on condition the table gets populated at runtime. At times there may be no record in the table. At that time wat happens to the leadselection value?? Is there any way to know that the context(which is bound to the table) is empty???

Please help me out!!!

Thanks in advance.