Package org.jivesoftware.smackx.disco

Class ServiceDiscoveryManager

java.lang.Object

org.jivesoftware.smack.Manager

org.jivesoftware.smackx.disco.ServiceDiscoveryManager

public final class ServiceDiscoveryManager
extends Manager

Manages discovery of services in XMPP entities. This class provides:

1. A registry of supported features in this XMPP entity.
2. Automatic response when this XMPP entity is queried for information.
3. Ability to discover items and information of remote XMPP entities.
4. Ability to publish publicly available items.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	ServiceDiscoveryManager.Stats

Method Summary

Modifier and Type	Method	Description
boolean	accountSupportsFeatures(CharSequence... features)	Check if the given features are supported by the connection account.
boolean	accountSupportsFeatures(Collection<? extends CharSequence> features)	Check if the given collection of features are supported by the connection account.
static void	addDiscoInfoLookupShortcutMechanism(DiscoInfoLookupShortcutMechanism discoInfoLookupShortcutMechanism)
void	addDiscoverInfoTo(DiscoverInfoBuilder response)	Add discover info response data.
boolean	addEntityCapabilitiesChangedListener(EntityCapabilitiesChangedListener entityCapabilitiesChangedListener)
DataForm	addExtendedInfo(DataForm extendedInfo)	Registers extended discovery information of this XMPP entity.
void	addFeature(String feature)	Registers that a new feature is supported by this XMPP entity.
void	addIdentity(DiscoverInfo.Identity identity)	Add an further identity to the client.
DiscoverInfo	discoverInfo(Jid entityID)	Returns the discovered information of a given XMPP entity addressed by its JID.
DiscoverInfo	discoverInfo(Jid entityID, String node)	Returns the discovered information of a given XMPP entity addressed by its JID and note attribute.
DiscoverItems	discoverItems(Jid entityID)	Returns the discovered items of a given XMPP entity addressed by its JID.
DiscoverItems	discoverItems(Jid entityID, String node)	Returns the discovered items of a given XMPP entity addressed by its JID and note attribute.
DomainBareJid	findService(String feature, boolean useCache)
DomainBareJid	findService(String feature, boolean useCache, String category, String type)
List<DomainBareJid>	findServices(String feature, boolean stopOnFirst, boolean useCache)	Find all services under the users service that provide a given feature.
List<DiscoverInfo>	findServicesDiscoverInfo(String feature, boolean stopOnFirst, boolean useCache)	Find all services under the users service that provide a given feature.
List<DiscoverInfo>	findServicesDiscoverInfo(String feature, boolean stopOnFirst, boolean useCache, Map<? super Jid,Exception> encounteredExceptions)	Find all services under the users service that provide a given feature.
List<DiscoverInfo>	findServicesDiscoverInfo(DomainBareJid serviceName, String feature, boolean stopOnFirst, boolean useCache, Map<? super Jid,Exception> encounteredExceptions)	Find all services under a given service that provide a given feature.
List<DataForm>	getExtendedInfo()	Returns the data form as List of PacketExtensions, or null if no data form is set.
List<String>	getFeatures()	Returns the supported features by this XMPP entity.
Set<DiscoverInfo.Identity>	getIdentities()	Returns all identities of this client as unmodifiable Collection.
DiscoverInfo.Identity	getIdentity()	Return the default identity of the client.
String	getIdentityName()	Returns the name of the client that will be returned when asked for the client identity in a disco request.
String	getIdentityType()	Returns the type of client that will be returned when asked for the client identity in a disco request.
static ServiceDiscoveryManager	getInstanceFor(XMPPConnection connection)	Returns the ServiceDiscoveryManager instance associated with a given XMPPConnection.
ServiceDiscoveryManager.Stats	getStats()
boolean	includesFeature(String feature)	Returns true if the specified feature is registered in the ServiceDiscoveryManager.
static void	removeDiscoInfoLookupShortcutMechanism(DiscoInfoLookupShortcutMechanism discoInfoLookupShortcutMechanism)
boolean	removeEntityCapabilitiesChangedListener(EntityCapabilitiesChangedListener entityCapabilitiesChangedListener)
void	removeExtendedInfo()	Removes the data form containing extended service discovery information from the information returned by this XMPP entity.
void	removeExtendedInfo(String formType)	Remove the extended discovery information of the given form type.
void	removeFeature(String feature)	Removes the specified feature from the supported features by this XMPP entity.
boolean	removeIdentity(DiscoverInfo.Identity identity)	Remove an identity from the client.
void	removeNodeInformationProvider(String node)	Removes the NodeInformationProvider responsible for providing information (ie items) related to a given node.
boolean	serverSupportsFeature(CharSequence feature)	Returns true if the server supports the given feature.
boolean	serverSupportsFeatures(CharSequence... features)
boolean	serverSupportsFeatures(Collection<? extends CharSequence> features)
static void	setDefaultIdentity(DiscoverInfo.Identity identity)	Set the default identity all new connections will have.
void	setIdentity(DiscoverInfo.Identity identity)	Sets the default identity the client will report.
void	setNodeInformationProvider(String node, NodeInformationProvider listener)	Sets the NodeInformationProvider responsible for providing information (ie items) related to a given node.
boolean	supportsFeature(Jid jid, CharSequence feature)	Queries the remote entity for it's features and returns true if the given feature is found.
boolean	supportsFeatures(Jid jid, CharSequence... features)
boolean	supportsFeatures(Jid jid, Collection<? extends CharSequence> features)

Methods inherited from class org.jivesoftware.smack.Manager

connection, getAuthenticatedConnectionOrThrow, schedule, schedule, scheduleBlocking

Methods inherited from class java.lang.Object

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

Method Details

setDefaultIdentity

public static void setDefaultIdentity(DiscoverInfo.Identity identity)

Set the default identity all new connections will have. If unchanged the default identity is an identity where category is set to 'client', type is set to 'pc' and name is set to 'Smack'.

Parameters:

identity - TODO javadoc me please

getIdentityName

public String getIdentityName()

Returns the name of the client that will be returned when asked for the client identity in a disco request. The name could be any value you need to identity this client.

Returns:

the name of the client that will be returned when asked for the client identity in a disco request.

setIdentity

public void setIdentity(DiscoverInfo.Identity identity)

Sets the default identity the client will report.

Parameters:

identity - TODO javadoc me please

getIdentity

public DiscoverInfo.Identity getIdentity()

Return the default identity of the client.

Returns:

the default identity.

getIdentityType

public String getIdentityType()

Returns the type of client that will be returned when asked for the client identity in a disco request. The valid types are defined by the category client. Follow this link to learn the possible types: XMPP Registry for Service Discovery Identities

Returns:

the type of client that will be returned when asked for the client identity in a disco request.

addIdentity

public void addIdentity(DiscoverInfo.Identity identity)

Add an further identity to the client.

Parameters:

identity - TODO javadoc me please

removeIdentity

public boolean removeIdentity(DiscoverInfo.Identity identity)

Remove an identity from the client. Note that the client needs at least one identity, the default identity, which can not be removed.

Parameters:

identity - TODO javadoc me please

Returns:

true, if successful. Otherwise the default identity was given.

getIdentities

public Set<DiscoverInfo.Identity> getIdentities()

Returns all identities of this client as unmodifiable Collection.

Returns:

all identities as a set

getInstanceFor

public static ServiceDiscoveryManager getInstanceFor(XMPPConnection connection)

Returns the ServiceDiscoveryManager instance associated with a given XMPPConnection.

Parameters:

connection - the connection used to look for the proper ServiceDiscoveryManager.

Returns:

the ServiceDiscoveryManager associated with a given XMPPConnection.

addDiscoverInfoTo

public void addDiscoverInfoTo(DiscoverInfoBuilder response)

Add discover info response data.

Parameters:

response - the discover info response packet

See Also:

• XEP-30 Basic Protocol; Example 2

setNodeInformationProvider

public void setNodeInformationProvider(String node,
 NodeInformationProvider listener)

Sets the NodeInformationProvider responsible for providing information (ie items) related to a given node. Every time this client receives a disco request regarding the items of a given node, the provider associated to that node will be the responsible for providing the requested information.

In MUC, a node could be 'http://jabber.org/protocol/muc#rooms' which means that the NodeInformationProvider will provide information about the rooms where the user has joined.

Parameters:

node - the node whose items will be provided by the NodeInformationProvider.

listener - the NodeInformationProvider responsible for providing items related to the node.

removeNodeInformationProvider

public void removeNodeInformationProvider(String node)

Removes the NodeInformationProvider responsible for providing information (ie items) related to a given node. This means that no more information will be available for the specified node. In MUC, a node could be 'http://jabber.org/protocol/muc#rooms' which means that the NodeInformationProvider will provide information about the rooms where the user has joined.

Parameters:

node - the node to remove the associated NodeInformationProvider.

getFeatures

public List<String> getFeatures()

Returns the supported features by this XMPP entity.

The result is a copied modifiable list of the original features.

Returns:

a List of the supported features by this XMPP entity.

addFeature

public void addFeature(String feature)

Registers that a new feature is supported by this XMPP entity. When this client is queried for its information the registered features will be answered.

Since no stanza is actually sent to the server it is safe to perform this operation before logging to the server. In fact, you may want to configure the supported features before logging to the server so that the information is already available if it is required upon login.

Parameters:

feature - the feature to register as supported.

removeFeature

public void removeFeature(String feature)

Removes the specified feature from the supported features by this XMPP entity.

Since no stanza is actually sent to the server it is safe to perform this operation before logging to the server.

Parameters:

feature - the feature to remove from the supported features.

includesFeature

public boolean includesFeature(String feature)

Returns true if the specified feature is registered in the ServiceDiscoveryManager.

Parameters:

feature - the feature to look for.

Returns:

a boolean indicating if the specified featured is registered or not.

addExtendedInfo

public DataForm addExtendedInfo(DataForm extendedInfo)

Registers extended discovery information of this XMPP entity. When this client is queried for its information this data form will be returned as specified by XEP-0128.

Since no stanza is actually sent to the server it is safe to perform this operation before logging to the server. In fact, you may want to configure the extended info before logging to the server so that the information is already available if it is required upon login.

Parameters:

extendedInfo - the data form that contains the extend service discovery information.

Returns:

the old data form which got replaced (if any)

Since:

4.4.0

removeExtendedInfo

public void removeExtendedInfo(String formType)

Remove the extended discovery information of the given form type.

Parameters:

formType - the type of the data form with the extended discovery information to remove.

Since:

4.4.0

getExtendedInfo

public List<DataForm> getExtendedInfo()

Returns the data form as List of PacketExtensions, or null if no data form is set. This representation is needed by some classes (e.g. EntityCapsManager, NodeInformationProvider)

Returns:

the data form as List of PacketExtensions

removeExtendedInfo

public void removeExtendedInfo()

Removes the data form containing extended service discovery information from the information returned by this XMPP entity.

Since no stanza is actually sent to the server it is safe to perform this operation before logging to the server.

discoverInfo

public DiscoverInfo discoverInfo(Jid entityID)
                          throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Returns the discovered information of a given XMPP entity addressed by its JID. Use null as entityID to query the server

Parameters:

entityID - the address of the XMPP entity or null.

Returns:

the discovered information.

Throws:

XMPPException.XMPPErrorException - if there was an XMPP error returned.

SmackException.NoResponseException - if there was no response from the remote entity.

SmackException.NotConnectedException - if the XMPP connection is not connected.

InterruptedException - if the calling thread was interrupted.

discoverInfo

public DiscoverInfo discoverInfo(Jid entityID,
 String node)
                          throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Returns the discovered information of a given XMPP entity addressed by its JID and note attribute. Use this message only when trying to query information which is not directly addressable.

Parameters:

entityID - the address of the XMPP entity.

node - the optional attribute that supplements the 'jid' attribute.

Returns:

the discovered information.

Throws:

XMPPException.XMPPErrorException - if the operation failed for some reason.

SmackException.NoResponseException - if there was no response from the server.

SmackException.NotConnectedException - if the XMPP connection is not connected.

InterruptedException - if the calling thread was interrupted.

See Also:

• XEP-30 Basic Protocol
• XEP-30 Info Nodes

discoverItems

public DiscoverItems discoverItems(Jid entityID)
                            throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Returns the discovered items of a given XMPP entity addressed by its JID.

Parameters:

entityID - the address of the XMPP entity.

Returns:

the discovered information.

Throws:

XMPPException.XMPPErrorException - if the operation failed for some reason.

SmackException.NoResponseException - if there was no response from the server.

SmackException.NotConnectedException - if the XMPP connection is not connected.

InterruptedException - if the calling thread was interrupted.

discoverItems

public DiscoverItems discoverItems(Jid entityID,
 String node)
                            throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Returns the discovered items of a given XMPP entity addressed by its JID and note attribute. Use this message only when trying to query information which is not directly addressable.

Parameters:

entityID - the address of the XMPP entity.

node - the optional attribute that supplements the 'jid' attribute.

Returns:

the discovered items.

Throws:

XMPPException.XMPPErrorException - if the operation failed for some reason.

SmackException.NoResponseException - if there was no response from the server.

SmackException.NotConnectedException - if the XMPP connection is not connected.

InterruptedException - if the calling thread was interrupted.

serverSupportsFeature

public boolean serverSupportsFeature(CharSequence feature)
                              throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Returns true if the server supports the given feature.

Parameters:

feature - TODO javadoc me please

Returns:

true if the server supports the given feature.

Throws:

SmackException.NoResponseException - if there was no response from the remote entity.

XMPPException.XMPPErrorException - if there was an XMPP error returned.

SmackException.NotConnectedException - if the XMPP connection is not connected.

InterruptedException - if the calling thread was interrupted.

Since:

4.1

serverSupportsFeatures

public boolean serverSupportsFeatures(CharSequence... features)
                               throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Throws:

SmackException.NoResponseException

XMPPException.XMPPErrorException

SmackException.NotConnectedException

InterruptedException

serverSupportsFeatures

public boolean serverSupportsFeatures(Collection<? extends CharSequence> features)
                               throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Throws:

SmackException.NoResponseException

XMPPException.XMPPErrorException

SmackException.NotConnectedException

InterruptedException

accountSupportsFeatures

public boolean accountSupportsFeatures(CharSequence... features)
                                throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Check if the given features are supported by the connection account. This means that the discovery information lookup will be performed on the bare JID of the connection managed by this ServiceDiscoveryManager.

Parameters:

features - the features to check

Returns:

true if all features are supported by the connection account, false otherwise

Throws:

SmackException.NoResponseException - if there was no response from the remote entity.

XMPPException.XMPPErrorException - if there was an XMPP error returned.

SmackException.NotConnectedException - if the XMPP connection is not connected.

InterruptedException - if the calling thread was interrupted.

Since:

4.2.2

accountSupportsFeatures

public boolean accountSupportsFeatures(Collection<? extends CharSequence> features)
                                throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Check if the given collection of features are supported by the connection account. This means that the discovery information lookup will be performed on the bare JID of the connection managed by this ServiceDiscoveryManager.

Parameters:

features - a collection of features

Returns:

true if all features are supported by the connection account, false otherwise

Throws:

SmackException.NoResponseException - if there was no response from the remote entity.

XMPPException.XMPPErrorException - if there was an XMPP error returned.

SmackException.NotConnectedException - if the XMPP connection is not connected.

InterruptedException - if the calling thread was interrupted.

Since:

4.2.2

supportsFeature

public boolean supportsFeature(Jid jid,
 CharSequence feature)
                        throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Queries the remote entity for it's features and returns true if the given feature is found.

Parameters:

jid - the JID of the remote entity

feature - TODO javadoc me please

Returns:

true if the entity supports the feature, false otherwise

Throws:

XMPPException.XMPPErrorException - if there was an XMPP error returned.

SmackException.NoResponseException - if there was no response from the remote entity.

SmackException.NotConnectedException - if the XMPP connection is not connected.

InterruptedException - if the calling thread was interrupted.

supportsFeatures

public boolean supportsFeatures(Jid jid,
 CharSequence... features)
                         throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Throws:

SmackException.NoResponseException

XMPPException.XMPPErrorException

SmackException.NotConnectedException

InterruptedException

supportsFeatures

public boolean supportsFeatures(Jid jid,
 Collection<? extends CharSequence> features)
                         throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Throws:

SmackException.NoResponseException

XMPPException.XMPPErrorException

SmackException.NotConnectedException

InterruptedException

findServicesDiscoverInfo

public List<DiscoverInfo> findServicesDiscoverInfo(String feature,
 boolean stopOnFirst,
 boolean useCache)
                                            throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Find all services under the users service that provide a given feature.

Parameters:

feature - the feature to search for

stopOnFirst - if true, stop searching after the first service was found

useCache - if true, query a cache first to avoid network I/O

Returns:

a possible empty list of services providing the given feature

Throws:

SmackException.NoResponseException - if there was no response from the remote entity.

XMPPException.XMPPErrorException - if there was an XMPP error returned.

SmackException.NotConnectedException - if the XMPP connection is not connected.

InterruptedException - if the calling thread was interrupted.

findServicesDiscoverInfo

public List<DiscoverInfo> findServicesDiscoverInfo(String feature,
 boolean stopOnFirst,
 boolean useCache,
 Map<? super Jid,Exception> encounteredExceptions)
                                            throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Find all services under the users service that provide a given feature.

Parameters:

feature - the feature to search for

stopOnFirst - if true, stop searching after the first service was found

useCache - if true, query a cache first to avoid network I/O

encounteredExceptions - an optional map which will be filled with the exceptions encountered

Returns:

a possible empty list of services providing the given feature

Throws:

SmackException.NoResponseException - if there was no response from the remote entity.

XMPPException.XMPPErrorException - if there was an XMPP error returned.

SmackException.NotConnectedException - if the XMPP connection is not connected.

InterruptedException - if the calling thread was interrupted.

Since:

4.2.2

findServicesDiscoverInfo

public List<DiscoverInfo> findServicesDiscoverInfo(DomainBareJid serviceName,
 String feature,
 boolean stopOnFirst,
 boolean useCache,
 Map<? super Jid,Exception> encounteredExceptions)
                                            throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Find all services under a given service that provide a given feature.

Parameters:

serviceName - the service to query

feature - the feature to search for

stopOnFirst - if true, stop searching after the first service was found

useCache - if true, query a cache first to avoid network I/O

encounteredExceptions - an optional map which will be filled with the exceptions encountered

Returns:

a possible empty list of services providing the given feature

Throws:

SmackException.NoResponseException - if there was no response from the remote entity.

XMPPException.XMPPErrorException - if there was an XMPP error returned.

SmackException.NotConnectedException - if the XMPP connection is not connected.

InterruptedException - if the calling thread was interrupted.

Since:

4.3.0

findServices

public List<DomainBareJid> findServices(String feature,
 boolean stopOnFirst,
 boolean useCache)
                                 throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Find all services under the users service that provide a given feature.

Parameters:

feature - the feature to search for

stopOnFirst - if true, stop searching after the first service was found

useCache - if true, query a cache first to avoid network I/O

Returns:

a possible empty list of services providing the given feature

Throws:

SmackException.NoResponseException - if there was no response from the remote entity.

XMPPException.XMPPErrorException - if there was an XMPP error returned.

SmackException.NotConnectedException - if the XMPP connection is not connected.

InterruptedException - if the calling thread was interrupted.

findService

public DomainBareJid findService(String feature,
 boolean useCache,
 String category,
 String type)
                          throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Throws:

SmackException.NoResponseException

XMPPException.XMPPErrorException

SmackException.NotConnectedException

InterruptedException

findService

public DomainBareJid findService(String feature,
 boolean useCache)
                          throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Throws:

SmackException.NoResponseException

XMPPException.XMPPErrorException

SmackException.NotConnectedException

InterruptedException

addEntityCapabilitiesChangedListener

public boolean addEntityCapabilitiesChangedListener(EntityCapabilitiesChangedListener entityCapabilitiesChangedListener)

removeEntityCapabilitiesChangedListener

public boolean removeEntityCapabilitiesChangedListener(EntityCapabilitiesChangedListener entityCapabilitiesChangedListener)

addDiscoInfoLookupShortcutMechanism

public static void addDiscoInfoLookupShortcutMechanism(DiscoInfoLookupShortcutMechanism discoInfoLookupShortcutMechanism)

removeDiscoInfoLookupShortcutMechanism

public static void removeDiscoInfoLookupShortcutMechanism(DiscoInfoLookupShortcutMechanism discoInfoLookupShortcutMechanism)

getStats

public ServiceDiscoveryManager.Stats getStats()