open FH, "sample.txt" or die $!;
$str = <FH>;
close FH;

my @arr = split("@@",$str);

sub getTableID($$) {return 100;} 

$subs{$arr[1]} = sub{getTableID($_[0],$_[1])};

  my $val1 = $arr[0];
  my $call = $arr[1];
  my $func; 
  if ($subs{$call}) { 
    $func=$subs{$call}->(@arr1); 
    print 'call:',$call.' func:'.$func."\n";
    } 
  else { 
    print 'unknown sub:'.$call."\n"; 
    }