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import uk.ac.ukc.iscream.core.*; |
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import uk.ac.ukc.iscream.util.*; |
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import uk.ac.ukc.iscream.componentmanager.*; |
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import java.util.LinkedList; |
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import java.util.Iterator; |
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/** |
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* A client interface servant |
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* This keeps a track of all connected clients to |
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* the system and passes data to their handlers. |
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* This class, a servant, listens for incoming data sent to it |
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* using CORBA. This data is then queued in the PacketSorter. |
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* It does no processing of the data, and is only a seperate |
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* class to keep the CORBA stuff out of the PacketSorter. |
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* |
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* Currently it has limited client management facilities. |
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* |
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* @author $Author$ |
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* @version $Id$ |
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*/ |
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/** |
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* Creates a new ClientInterfaceServant. |
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* |
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* @param packetSorter a reference to the PacketSorter object being used |
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*/ |
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public ClientInterfaceServant() { |
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// here would be a nice place to pass in local clients |
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_clients = new LinkedList(); |
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public ClientInterfaceServant(PacketSorter packetSorter) { |
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_queue = packetSorter.getQueue(); |
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_logger.write(toString(), Logger.SYSINIT, "created"); |
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} |
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//---PUBLIC METHODS--- |
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/** |
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* Method to receive a string over corba. |
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* Method to receive a string over CORBA. |
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* |
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* @param xml the String of XML to print out |
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* @param xml the XML string to be queued for processing. |
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*/ |
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public void receiveXML(String xml) { |
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Iterator i = _clients.iterator(); |
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while(i.hasNext()) { |
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((ClientDataHandler) i.next()).receiveXML(xml); |
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} |
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_queue.add(xml); |
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} |
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/** |
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* Simply adds clients to a linked list |
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* |
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* @param newClient a reference to the client to add |
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*/ |
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public void register(ClientDataHandler newClient) { |
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_logger.write(toString(), Logger.SYSMSG, "registered client - " + newClient.toString()); |
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_clients.add(newClient); |
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} |
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|
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/** |
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* Simply removes a client from a linked list |
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* |
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* @param client a reference to the client to be removed |
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*/ |
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public void deregister(ClientDataHandler client) { |
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_logger.write(toString(), Logger.SYSMSG, "deregistered client - " + client.toString()); |
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_clients.remove(client); |
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} |
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/** |
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* Overrides the {@link java.lang.Object#toString() Object.toString()} |
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* method to provide clean logging (every class should have this). |
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* |
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*/ |
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private Logger _logger = ReferenceManager.getInstance().getLogger(); |
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private LinkedList _clients; |
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/** |
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* A reference to the Queue we'll add data to. This is |
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* actually located in the PacketSorter. |
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*/ |
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private Queue _queue; |
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//---STATIC ATTRIBUTES--- |
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