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Allows to retrieve items for entity nodes. SMACK-134 

git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@2307 b35dd754-fafc-0310-a699-88a17e54d16e
This commit is contained in:
Gaston Dombiak 2004-05-09 19:18:02 +00:00 committed by gdombiak
parent fbd6043c5c
commit 1da02cbfd8
1 changed files with 70 additions and 14 deletions
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84
source/org/jivesoftware/smackx/ServiceDiscoveryManager.java
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@ -71,12 +71,13 @@ import org.jivesoftware.smackx.packet.*;
* @author Gaston Dombiak
*/
public class ServiceDiscoveryManager {
private static Map instances = new Hashtable();
private XMPPConnection connection;
private List features = new ArrayList();
private Map nodeInformationProviders = new Hashtable();
// Create a new ServiceDiscoveryManager on every established connection
static {
XMPPConnection.addConnectionListener(new ConnectionEstablishedListener() {
@ -105,9 +106,9 @@ public class ServiceDiscoveryManager {
* @return the ServiceDiscoveryManager associated with a given XMPPConnection
*/
public static ServiceDiscoveryManager getInstanceFor(XMPPConnection connection) {
return (ServiceDiscoveryManager)instances.get(connection);
return (ServiceDiscoveryManager) instances.get(connection);
}
/**
* Initializes the packet listeners of the connection that will answer to any
* service discovery request.
@ -122,25 +123,34 @@ public class ServiceDiscoveryManager {
// Unregister this instance since the connection has been closed
instances.remove(connection);
}
public void connectionClosedOnError(Exception e) {
// Unregister this instance since the connection has been closed
instances.remove(connection);
}
});
// Listen for disco#items requests and answer with an empty result
PacketFilter packetFilter = new PacketTypeFilter(DiscoverItems.class);
PacketListener packetListener = new PacketListener() {
public void processPacket(Packet packet) {
DiscoverItems discoverItems = (DiscoverItems) packet;
// Answer an empty result if the request is of the GET type
// Note: In a future version Smack will enable to have items defined in the client
// Send back the items defined in the client if the request is of type GET
if (discoverItems != null && discoverItems.getType() == IQ.Type.GET) {
DiscoverItems response = new DiscoverItems();
response.setType(IQ.Type.RESULT);
response.setTo(discoverItems.getFrom());
response.setPacketID(discoverItems.getPacketID());
// Add the defined items related to the requested node. Look for
// the NodeInformationProvider associated with the requested node.
if (getNodeInformationProvider(discoverItems.getNode()) != null) {
Iterator items =
getNodeInformationProvider(discoverItems.getNode()).getNodeItems();
while (items.hasNext()) {
response.addItem((DiscoverItems.Item) items.next());
}
}
connection.sendPacket(response);
}
}
@ -161,7 +171,7 @@ public class ServiceDiscoveryManager {
response.setPacketID(discoverInfo.getPacketID());
// Add the registered features to the response
synchronized (features) {
for (Iterator it=getFeatures(); it.hasNext();) {
for (Iterator it = getFeatures(); it.hasNext();) {
response.addFeature((String) it.next());
}
}
@ -172,6 +182,52 @@ public class ServiceDiscoveryManager {
connection.addPacketListener(packetListener, packetFilter);
}
/**
* Returns the NodeInformationProvider responsible for providing information
* (i.e. items) related to a given node or <tt>null</null> if none.<p>
*
* 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.
*
* @param node the node that contains items associated with an entity not addressable as a JID
* @return the NodeInformationProvider responsible for providing information related
* to a given node
*/
private NodeInformationProvider getNodeInformationProvider(String node) {
return (NodeInformationProvider) nodeInformationProviders.get(node);
}
/**
* Sets the NodeInformationProvider responsible for providing information
* (i.e. 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.<p>
*
* 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.
*
* @param node the node whose items will be provided by the NodeInformationProvider
* @return the NodeInformationProvider responsible for providing items related
* to the node
*/
public void setNodeInformationProvider(String node, NodeInformationProvider listener) {
nodeInformationProviders.put(node, listener);
}
/**
* Removes the NodeInformationProvider responsible for providing information
* (i.e. 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.
*
* @param node the node to remove the associated NodeInformationProvider
*/
public void removeNodeInformationProvider(String node) {
nodeInformationProviders.remove(node);
}
/**
* Returns the supported features by this XMPP entity.
*
@ -182,7 +238,7 @@ public class ServiceDiscoveryManager {
return Collections.unmodifiableList(new ArrayList(features)).iterator();
}
}
/**
* 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.
@ -228,7 +284,7 @@ public class ServiceDiscoveryManager {
public DiscoverInfo discoverInfo(String entityID) throws XMPPException {
return discoverInfo(entityID, null);
}
/**
* 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
@ -273,7 +329,7 @@ public class ServiceDiscoveryManager {
public DiscoverItems discoverItems(String entityID) throws XMPPException {
return discoverItems(entityID, null);
}
/**
* 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
@ -321,7 +377,7 @@ public class ServiceDiscoveryManager {
public void publishItems(String entityID, DiscoverItems discoverItems) throws XMPPException {
discoverItems.setType(IQ.Type.SET);
discoverItems.setTo(entityID);
// Create a packet collector to listen for a response.
PacketCollector collector =
connection.createPacketCollector(new PacketIDFilter(discoverItems.getPacketID()));