bugs?

[jsrffd2]

Hi
I think there are two bugs in the code:

1. when you perform the open of the file (line 243)
   cdb_ = fs_.open(fileName);
   should be
   cdb_ = fs_.open(fileName,"r");

2. in case the database contains few records the hashTabSlotsNum_ at line 331 becomes equal to 0 if the searched key is not present so the division at line 336 takes a fault.
   As fix probably is better to add the following statement after line 334

  if (hashTabSlotsNum_ == 0) {
    return (state_ = KEY_NOT_FOUND);
  }