Can we set few table rows as pre-selected and few rows as Non-Selectable?

Hi , As shown in image, all rows are pre-selected through data utility

In Tree-Builder :

In xconf :

<Option serviceClass="PreSelectRowDataUtility"selector="abc"cardinality="duplicate"requestor="java.lang.Object"/>

In Data Utility :

public class PreSelectRowDataUtility extends AbstractBooleanValueDataUtility

{

  public boolean getBooleanAttributeValue(String paramString, Object paramObject, ModelContext paramModelContext) throws WTException

  {

   return true;

  }

}

Now we want first row as Non Selectable. There should be no checkbox in first row.

for that there is ptc method

and DataUtility AbstractNonSelectableRowDataUtility

But there is already one data utility registered in xconf regarding this column"abc" . how we can do implement both functionality togather ?

Requesting for Help. Thanks