org.jivesoftware.openfire.stanzaid

Class StanzaIDUtil

java.lang.Object

org.jivesoftware.openfire.stanzaid.StanzaIDUtil

public class StanzaIDUtil
extends Object

Utility methods that implement XEP-0359: Unique and Stable Stanza IDs.

Author:

Guus der Kinderen, guus.der.kinderen@gmail.com

See Also:

XEP-0359

Constructor Summary

Constructors

Constructor and Description
StanzaIDUtil()

Method Summary

Modifier and Type	Method and Description
static org.xmpp.packet.Packet	ensureUniqueAndStableStanzaID(org.xmpp.packet.Packet packet, org.xmpp.packet.JID self) Modifies the stanza that's passed as a packet by adding a Stanza ID.
static String	generateUniqueAndStableStanzaID(org.xmpp.packet.Packet packet) Returns a value that is an appropriate unique and stable stanza ID in context of XEP-0359: it's either the origin-id value, or a UUID.
static UUID	parseUniqueAndStableStanzaID(org.xmpp.packet.Packet packet, String by) Returns the first stable and unique stanza-id value from the packet, that is defined for a particular 'by' value.

Methods inherited from class java.lang.Object

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

Constructor Detail

StanzaIDUtil

public StanzaIDUtil()

Method Detail

ensureUniqueAndStableStanzaID

public static org.xmpp.packet.Packet ensureUniqueAndStableStanzaID(org.xmpp.packet.Packet packet,
                                                                   org.xmpp.packet.JID self)

Modifies the stanza that's passed as a packet by adding a Stanza ID.

Parameters:

packet - The inbound packet (cannot be null).

self - The ID of the 'local' entity that will generate the stanza ID (cannot be null).

Returns:

the updated packet

See Also:

XEP-0359

generateUniqueAndStableStanzaID

public static String generateUniqueAndStableStanzaID(org.xmpp.packet.Packet packet)

Returns a value that is an appropriate unique and stable stanza ID in context of XEP-0359: it's either the origin-id value, or a UUID.

Parameters:

packet - The stanza for what to return the ID (cannot be null).

Returns:

The ID (never null or empty string).

parseUniqueAndStableStanzaID

public static UUID parseUniqueAndStableStanzaID(org.xmpp.packet.Packet packet,
                                                String by)

Returns the first stable and unique stanza-id value from the packet, that is defined for a particular 'by' value. This method does not evaluate 'origin-id' elements in the packet.

Parameters:

packet - The stanza (cannot be null).

by - The 'by' value for which to return the ID (cannot be null or an empty string).

Returns:

The unique and stable ID, or null if no such ID is found.