Email validates s email against the EMAIL_PATTERN set in the constant.

Empty validates s value by checking if it is blank.

IntegerInRange validates if s contains integral value, and its value lies between min and max values.

IsInteger validates if s contains integral value.

LengthInRange validates if the length s is between specified min and max value.

MaxLength validates if the length s is smaller than or equal to the specified max value.

MinLength validates if the length of s is greater than or equal to the specified min value.

NotBlank is the validation function for validating if the current field has a value or length greater than zero, or is not a space only string.

Password validates s password against the rules defined below.

EmailPattern stores a regular expression to validate the email address.

NamePattern stores a regular expression to validate the name.