* A JID consists of three parts: *
* [ localpart "@" ] domainpart [ "/" resourcepart ] *
* The easiest way to create a JID is to use the {@link #of(CharSequence)} method: * ```java * Jid jid = Jid.of("juliet@capulet.lit/balcony"); * ``` * You can then get the parts from it via the respective methods: * ```java * String local = jid.getLocal(); // juliet * String domain = jid.getDomain(); // capulet.lit * String resource = jid.getResource(); // balcony * ``` * Implementations of this interface should overrideequals() and hashCode(), so that different instances with the same value are equal:
* ```java
* Jid.of("romeo@capulet.lit/balcony").equals(Jid.of("romeo@capulet.lit/balcony")); // true
* ```
* The default implementation of this class also supports XEP-0106: JID Escaping, i.e.
* ```java
* Jid.of("d'artagnan@musketeers.lit")
* ```
* is escaped as d\\27artagnan@musketeers.lit.
*
* Implementations of this interface should be thread-safe and immutable.
*
* @author Christian Schudt
* @see RFC 7622 - Extensible Messaging and Presence Protocol (XMPP): Address Format
*/
public interface Jid extends Comparable Each allowable portion of a JID (localpart, domainpart, and
* resourcepart) is 1 to 1023 octets in length, resulting in a maximum
* total size (including the '@' and '/' separators) of 3071 octets.
* [ localpart "@" ] domainpart [ "/" resourcepart ] [ localpart "@" ] domainpart [ "/" resourcepart ] The term "full JID" refers to an XMPP address of the form <localpart@domainpart/resourcepart> (for a particular authorized client or device associated with an account) or of the form <domainpart/resourcepart> (for a particular resource or script associated with a server). The term "bare JID" refers to an XMPP address of the form <localpart@domainpart> (for an account at a server) or of the form <domainpart> (for a server). The term "bare JID" refers to an XMPP address of the form <localpart@domainpart> (for an account at a server) or of the form <domainpart> (for a server). The localpart of a JID is an optional identifier placed before the
* domainpart and separated from the latter by the '@' character.
* Typically, a localpart uniquely identifies the entity requesting and
* using network access provided by a server (i.e., a local account),
* although it can also represent other kinds of entities (e.g., a
* chatroom associated with a multi-user chat service [XEP-0045]). The
* entity represented by an XMPP localpart is addressed within the
* context of a specific domain (i.e., <localpart@domainpart>). The domainpart is the primary identifier and is the only REQUIRED
* element of a JID (a mere domainpart is a valid JID). Typically,
* a domainpart identifies the "home" server to which clients connect
* for XML routing and data management functionality. The resourcepart of a JID is an optional identifier placed after the
* domainpart and separated from the latter by the '/' character. A
* resourcepart can modify either a <localpart@domainpart> address or a
* mere <domainpart> address. Typically, a resourcepart uniquely
* identifies a specific connection (e.g., a device or location) or
* object (e.g., an occupant in a multi-user chatroom [XEP-0045])
* belonging to the entity associated with an XMPP localpart at a domain
* (i.e., <localpart@domainpart/resourcepart>).
*
*
* Note that the length is based on bytes, not characters.
*
* @see #MAX_BARE_JID_LENGTH
*/
int MAX_FULL_JID_LENGTH = 3071;
/**
* The maximal length of a bare JID, which is 2047 (1023 + 1 + 1023).
* Note that the length is based on bytes, not characters.
*
* @see #MAX_FULL_JID_LENGTH
*/
int MAX_BARE_JID_LENGTH = 2047;
/**
* The service discovery feature used for determining support of JID escaping (jid\20escaping).
*/
String ESCAPING_FEATURE = "jid\\20escaping";
/**
* Returns a full JID with a domain and resource part, e.g. capulet.com/balcony
*
* @param local The local part.
* @param domain The domain.
* @param resource The resource part.
* @return The JID.
* @throws NullPointerException If the domain is null.
* @throws IllegalArgumentException If the domain, local or resource part are not valid.
*/
static Jid of(CharSequence local, CharSequence domain, CharSequence resource) {
return new FullJid(local, domain, resource);
}
/**
* Creates a bare JID with only the domain part, e.g. capulet.com
*
* @param domain The domain.
* @return The JID.
* @throws NullPointerException If the domain is null.
* @throws IllegalArgumentException If the domain or local part are not valid.
*/
static Jid ofDomain(CharSequence domain) {
return new FullJid(null, domain, null);
}
/**
* Creates a bare JID with a local and domain part, e.g. juliet@capulet.com
*
* @param local The local part.
* @param domain The domain.
* @return The JID.
* @throws NullPointerException If the domain is null.
* @throws IllegalArgumentException If the domain or local part are not valid.
*/
static Jid ofLocalAndDomain(CharSequence local, CharSequence domain) {
return new FullJid(local, domain, null);
}
/**
* Creates a full JID with a domain and resource part, e.g. capulet.com/balcony
*
* @param domain The domain.
* @param resource The resource part.
* @return The JID.
* @throws NullPointerException If the domain is null.
* @throws IllegalArgumentException If the domain or resource are not valid.
*/
static Jid ofDomainAndResource(CharSequence domain, CharSequence resource) {
return new FullJid(null, domain, resource);
}
/**
* Creates a JID from an unescaped string. The format must be
*
* The input string will be escaped.
*
* @param jid The JID.
* @return The JID.
* @throws NullPointerException If the jid is null.
* @throws IllegalArgumentException If the jid could not be parsed or is not valid.
* @see XEP-0106: JID Escaping
*/
static Jid of(CharSequence jid) {
if (jid instanceof Jid) {
return (Jid) jid;
}
return FullJid.of(jid.toString(), false);
}
/**
* Creates a JID from a escaped JID string. The format must be
*
* This method should be used, when parsing JIDs from the XMPP stream.
*
* @param jid The JID.
* @return The JID.
* @throws NullPointerException If the jid is null.
* @throws IllegalArgumentException If the jid could not be parsed or is not valid.
* @see XEP-0106: JID Escaping
*/
static Jid ofEscaped(CharSequence jid) {
return FullJid.of(jid.toString(), true);
}
/**
* Checks if the JID is a full JID.
*
*
*
* @return True, if the JID is a full JID; otherwise false.
*/
boolean isFullJid();
/**
* Checks if the JID is a bare JID.
*
*
*
* @return True, if the JID is a bare JID; otherwise false.
*/
boolean isBareJid();
/**
* Checks if the JID is a domain JID, i.e. if it has no local part.
*
* @return True, if the JID is a domain JID, i.e. if it has no local part.
*/
boolean isDomainJid();
/**
* Gets the bare JID representation of this JID, i.e. removes the resource part.
*
*
*
* @return The bare JID.
* @see #withResource(CharSequence)
*/
Jid asBareJid();
/**
* Creates a new JID with a new local part and the same domain and resource part of the current JID.
*
* @param local The local part.
* @return The JID with a new local part.
* @throws IllegalArgumentException If the local is not a valid local part.
* @see #withResource(CharSequence)
*/
Jid withLocal(CharSequence local);
/**
* Creates a new full JID with a resource and the same local and domain part of the current JID.
*
* @param resource The resource.
* @return The full JID with a resource.
* @throws IllegalArgumentException If the resource is not a valid resource part.
* @see #asBareJid()
* @see #withLocal(CharSequence)
*/
Jid withResource(CharSequence resource);
/**
* Creates a new JID at a subdomain and at the same domain as this JID.
*
* @param subdomain The subdomain.
* @return The JID at a subdomain.
* @throws NullPointerException If subdomain is null.
* @throws IllegalArgumentException If subdomain is not a valid subdomain name.
*/
Jid atSubdomain(CharSequence subdomain);
/**
* Gets the local part of the JID, also known as the name or node.
*
*
*
*
* @return The local part or null.
* @see #getEscapedLocal()
*/
String getLocal();
/**
* Gets the escaped local part of the JID.
*
* @return The escaped local part or null.
* @see #getLocal()
* @since 0.8.0
*/
String getEscapedLocal();
/**
* Gets the domain part.
*
*
*
*
* @return The domain part.
*/
String getDomain();
/**
* Gets the resource part.
*
*
*
*
* @return The resource part or null.
*/
String getResource();
/**
* Returns the JID in escaped form as described in XEP-0106: JID Escaping.
*
* @return The escaped JID.
* @see #toString()
*/
String toEscapedString();
}