javax.mail.internet

Class UniqueValue

java.lang.Object

javax.mail.internet.UniqueValue

class UniqueValue
extends java.lang.Object

This is a utility class that generates unique values. The generated String contains only US-ASCII characters and hence is safe for use in RFC822 headers.

This is a package private class.

Field Summary

Fields

Modifier and Type	Field and Description
private static java.util.concurrent.atomic.AtomicInteger	id A global unique number, to ensure uniqueness of generated strings.

Constructor Summary

Constructors

Constructor and Description
UniqueValue()

Method Summary

Modifier and Type	Method and Description
static java.lang.String	getUniqueBoundaryValue() Get a unique value for use in a multipart boundary string.
static java.lang.String	getUniqueMessageIDValue(Session ssn) Get a unique value for use in a Message-ID.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

id

private static java.util.concurrent.atomic.AtomicInteger id

A global unique number, to ensure uniqueness of generated strings.

Constructor Detail

UniqueValue

UniqueValue()

Method Detail

getUniqueBoundaryValue

public static java.lang.String getUniqueBoundaryValue()

Get a unique value for use in a multipart boundary string. This implementation generates it by concatenating a global part number, a newly created object's hashCode(), and the current time (in milliseconds).

getUniqueMessageIDValue

public static java.lang.String getUniqueMessageIDValue(Session ssn)

Get a unique value for use in a Message-ID. This implementation generates it by concatenating a newly created object's hashCode(), a global ID (incremented on every use), the current time (in milliseconds), and the host name from this user's local address generated by InternetAddress.getLocalAddress(). (The host name defaults to "localhost" if getLocalAddress() returns null.)

Parameters:

ssn - Session object used to get the local address

See Also:

InternetAddress