org.apache.commons.validator

Class EmailValidator

java.lang.Object

org.apache.commons.validator.EmailValidator

public class EmailValidator

extends java.lang.Object

Perform email validations.

This class is a Singleton; you can retrieve the instance via the getInstance() method.

Based on a script by Sandeep V. Tamhankar http://javascript.internet.com

Since:: Validator 1.1

Field Summary
`private static java.lang.String`	`ATOM`
`private static java.lang.String`	`ATOM_PATTERN`
`private static java.lang.String`	`DOMAIN_PATTERN`
`private static java.lang.String`	`EMAIL_PATTERN`
`private static java.lang.String`	`IP_DOMAIN_PATTERN`
`private static java.lang.String`	`LEGAL_ASCII_PATTERN`
`private static java.lang.String`	`QUOTED_USER`
`private static java.lang.String`	`SPECIAL_CHARS`
`private static java.lang.String`	`USER_PATTERN`
`private static java.lang.String`	`VALID_CHARS`
`private static java.lang.String`	`WORD`
`private static EmailValidator`	`instance` Singleton instance of this class.

Constructor Summary
`EmailValidator()` Protected constructor for subclasses to use.

Method Summary
`static EmailValidator`	`getInstance()` Returns the Singleton instance of this validator.
`boolean`	`isValid(java.lang.String email)` Checks if a field has a valid e-mail address.
`protected boolean`	`isValidDomain(java.lang.String domain)` Returns true if the domain component of an email address is valid.
`protected boolean`	`isValidIpAddress(Perl5Util ipAddressMatcher)` Validates an IP address.
`protected boolean`	`isValidSymbolicDomain(java.lang.String domain)` Validates a symbolic domain name.
`protected boolean`	`isValidUser(java.lang.String user)` Returns true if the user component of an email address is valid.

ATOM

private static final java.lang.String ATOM

Field Value:
"[^\\s\$\$<>@,;:\\\\\\\\"\\.\\[\\]]+"

ATOM_PATTERN

private static final java.lang.String ATOM_PATTERN

Field Value:
"/([^\\s\$\$<>@,;:\\\\\\\\"\\.\\[\\]]+)/"

DOMAIN_PATTERN

private static final java.lang.String DOMAIN_PATTERN

Field Value:
"/^[^\\s\$\$<>@,;:\\\\\\\\"\\.\\[\\]]+(\\.[^\\s\$\$<>@,;:\\\\\\\\"\\.\\[\\]]+)*$/"

EMAIL_PATTERN

private static final java.lang.String EMAIL_PATTERN

Field Value:
"/^(.+)@(.+)$/"

IP_DOMAIN_PATTERN

private static final java.lang.String IP_DOMAIN_PATTERN

Field Value:
"/^(\\d{1,3})[.](\\d{1,3})[.](\\d{1,3})[.](\\d{1,3})$/"

LEGAL_ASCII_PATTERN

private static final java.lang.String LEGAL_ASCII_PATTERN

Field Value:
"/^[\\000-\\177]+$/"

QUOTED_USER

private static final java.lang.String QUOTED_USER

Field Value:
"(\\"[^\\"]*\\")"

SPECIAL_CHARS

private static final java.lang.String SPECIAL_CHARS

Field Value:
"\$\$<>@,;:\\\\\\\\"\\.\\[\\]"

USER_PATTERN

private static final java.lang.String USER_PATTERN

Field Value:
"/^([^\\s\$\$<>@,;:\\\\\\\\"\\.\\[\\]]+|(\\"[^\\"]*\\"))(\\.([^\\s\$\$<>@,;:\\\\\\\\"\\.\\[\\]]+|(\\"[^\\"]*\\")))*$/"

VALID_CHARS

private static final java.lang.String VALID_CHARS

Field Value:
"[^\\s\$\$<>@,;:\\\\\\\\"\\.\\[\\]]"

WORD

private static final java.lang.String WORD

Field Value:
"([^\\s\$\$<>@,;:\\\\\\\\"\\.\\[\\]]+|(\\"[^\\"]*\\"))"

instance

private static final EmailValidator instance

Singleton instance of this class.

EmailValidator

protected EmailValidator()

Protected constructor for subclasses to use.

getInstance

public static EmailValidator getInstance()

Returns the Singleton instance of this validator.

isValid

public boolean isValid(java.lang.String email)

Checks if a field has a valid e-mail address.
Parameters:
email - The value validation is being performed on. A null value is considered invalid.

isValidDomain

protected boolean isValidDomain(java.lang.String domain)

Returns true if the domain component of an email address is valid.
Parameters:
domain - being validatied.

isValidIpAddress

protected boolean isValidIpAddress(Perl5Util ipAddressMatcher)

Validates an IP address. Returns true if valid.
Parameters:
ipAddressMatcher - Pattren matcher

isValidSymbolicDomain

protected boolean isValidSymbolicDomain(java.lang.String domain)

Validates a symbolic domain name. Returns true if it's valid.
Parameters:
domain - symbolic domain name

isValidUser

protected boolean isValidUser(java.lang.String user)

Returns true if the user component of an email address is valid.
Parameters:
user - being validated

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