override public void visit(ITriplePath triplePath)
 {
     if (RDFUtil.sameTerm(_var, triplePath.getObject()) ||
         RDFUtil.sameTerm(_var, triplePath.getSubject()))
     {
         _checker.setResult();
     }
 }
 override public void visit(IVariable variable)
 {
     if (RDFUtil.sameTerm(_var, variable))
     {
         _checker.setResult();
     }
 }