server/clientinterface/CorbaClientListenerServant.java

//---PACKAGE DECLARATION---
package uk.ac.ukc.iscream.clientinterface;

//---IMPORTS---
import uk.ac.ukc.iscream.core.*;
import uk.ac.ukc.iscream.util.*;
import uk.ac.ukc.iscream.componentmanager.*;
import uk.ac.ukc.iscream.client.*;

/**
 * This class, a servant, listens for incoming connections from CORBA based
 * clients. Once it receives a connection it creates and assigns a CorbaControlHandler
 * object to it. The CorbaControlHandler will then handle all requests on behalf of the
 * client, and will send the client data.
 *
 * @author  $Author: tdb1 $
 * @version $Id: CorbaClientListenerServant.java,v 1.6 2001/02/28 19:04:00 tdb1 Exp $
 */
class CorbaClientListenerServant extends CorbaClientListenerPOA {

//---FINAL ATTRIBUTES---

    /**
     * The current CVS revision of this class
     */
    public final String REVISION = "$Revision: 1.6 $";
    
//---STATIC METHODS---

//---CONSTRUCTORS---

    /**
     * Creates a new CorbaClientListenerServant.
     *
     * @param packetSorter a reference to the PacketSorter object being used
     */
    public CorbaClientListenerServant(PacketSorter packetSorter) {
        _packetSorter = packetSorter;
        _logger.write(toString(), Logger.SYSINIT, "created");
    }
    
//---PUBLIC METHODS---

    /**
     * Allows a CORBA client to connect to the server.
     *
     * @param client a reference to the "servant" part of the connecting client.
     * @param name a name to identify the client.
     * @return a CorbaControlHandler reference.
     */
    public CorbaControlHandler connect(Client client, String name) {
        CorbaControlHandlerServant cchServant = new CorbaControlHandlerServant(_packetSorter, client, name);
        org.omg.CORBA.Object objRef;
        try {
            objRef = _refman.getRootPOA().servant_to_reference(cchServant);
        } catch (Exception e) {
            objRef = null;
            _logger.write(toString(), Logger.ERROR, "Error creating CorbaControlHandler: "+e);
        }
        CorbaControlHandler corbaHandler = CorbaControlHandlerHelper.narrow(objRef);
        return corbaHandler;
    }
    
    /**
     * Overrides the {@link java.lang.Object#toString() Object.toString()}
     * method to provide clean logging (every class should have this).
     *
     * This uses the uk.ac.ukc.iscream.util.NameFormat class
     * to format the toString()
     *
     * @return the name of this class and its CVS revision
     */
    public String toString() {
        return FormatName.getName(
            _name,
            getClass().getName(),
            REVISION);
    }

//---PRIVATE METHODS---

//---ACCESSOR/MUTATOR METHODS---

//---ATTRIBUTES---

    /**
     * This is the friendly identifier of the
     * component this class is running in.
     * eg, a Filter may be called "filter1",
     * If this class does not have an owning
     * component,  a name from the configuration
     * can be placed here.  This name could also
     * be changed to null for utility classes.
     */
    private String _name = ClientInterfaceMain.NAME;

    /**
     * This holds a reference to the
     * system logger that is being used.
     */
    private Logger _logger = ReferenceManager.getInstance().getLogger();
    
    /**
     * A reference to the reference manager in use
     */
    private ReferenceManager _refman = ReferenceManager.getInstance();
    
    /**
     * A reference to the PacketSorter.
     */
    private PacketSorter _packetSorter;
    
//---STATIC ATTRIBUTES---

}
Revision:	1.7
Committed:	Tue Mar 13 18:37:08 2001 UTC (23 years, 2 months ago) by tdb
Branch:	MAIN
Changes since 1.6:	+4 -11 lines
Log Message:	Now makes use of the ConfigurationProxy.
#	User	Rev	Content
1	tdb	1.1	//---PACKAGE DECLARATION---
2			package uk.ac.ukc.iscream.clientinterface;
3
4			//---IMPORTS---
5			import uk.ac.ukc.iscream.core.*;
6			import uk.ac.ukc.iscream.util.*;
7			import uk.ac.ukc.iscream.componentmanager.*;
8			import uk.ac.ukc.iscream.client.*;
9
10			/**
11			* This class, a servant, listens for incoming connections from CORBA based
12	tdb	1.4	* clients. Once it receives a connection it creates and assigns a CorbaControlHandler
13			* object to it. The CorbaControlHandler will then handle all requests on behalf of the
14	tdb	1.1	* client, and will send the client data.
15			*
16	tdb	1.2	* @author $Author: tdb1 $
17	tdb	1.7	* @version $Id: CorbaClientListenerServant.java,v 1.6 2001/02/28 19:04:00 tdb1 Exp $
18	tdb	1.1	*/
19			class CorbaClientListenerServant extends CorbaClientListenerPOA {
20
21			//---FINAL ATTRIBUTES---
22
23			/**
24			* The current CVS revision of this class
25			*/
26	tdb	1.7	public final String REVISION = "$Revision: 1.6 $";
27	tdb	1.1
28			//---STATIC METHODS---
29
30			//---CONSTRUCTORS---
31
32			/**
33			* Creates a new CorbaClientListenerServant.
34			*
35			* @param packetSorter a reference to the PacketSorter object being used
36			*/
37	tdb	1.7	public CorbaClientListenerServant(PacketSorter packetSorter) {
38	tdb	1.1	_packetSorter = packetSorter;
39			_logger.write(toString(), Logger.SYSINIT, "created");
40			}
41
42			//---PUBLIC METHODS---
43
44			/**
45			* Allows a CORBA client to connect to the server.
46			*
47			* @param client a reference to the "servant" part of the connecting client.
48	tdb	1.6	* @param name a name to identify the client.
49	tdb	1.4	* @return a CorbaControlHandler reference.
50	tdb	1.1	*/
51	tdb	1.6	public CorbaControlHandler connect(Client client, String name) {
52	tdb	1.7	CorbaControlHandlerServant cchServant = new CorbaControlHandlerServant(_packetSorter, client, name);
53	tdb	1.1	org.omg.CORBA.Object objRef;
54			try {
55	tdb	1.4	objRef = _refman.getRootPOA().servant_to_reference(cchServant);
56	tdb	1.1	} catch (Exception e) {
57			objRef = null;
58	tdb	1.4	_logger.write(toString(), Logger.ERROR, "Error creating CorbaControlHandler: "+e);
59	tdb	1.1	}
60	tdb	1.4	CorbaControlHandler corbaHandler = CorbaControlHandlerHelper.narrow(objRef);
61	tdb	1.1	return corbaHandler;
62			}
63
64			/**
65			* Overrides the {@link java.lang.Object#toString() Object.toString()}
66			* method to provide clean logging (every class should have this).
67			*
68			* This uses the uk.ac.ukc.iscream.util.NameFormat class
69			* to format the toString()
70			*
71			* @return the name of this class and its CVS revision
72			*/
73			public String toString() {
74			return FormatName.getName(
75			_name,
76			getClass().getName(),
77			REVISION);
78			}
79
80			//---PRIVATE METHODS---
81
82			//---ACCESSOR/MUTATOR METHODS---
83
84			//---ATTRIBUTES---
85
86			/**
87			* This is the friendly identifier of the
88			* component this class is running in.
89			* eg, a Filter may be called "filter1",
90			* If this class does not have an owning
91			* component, a name from the configuration
92			* can be placed here. This name could also
93			* be changed to null for utility classes.
94			*/
95			private String _name = ClientInterfaceMain.NAME;
96
97			/**
98			* This holds a reference to the
99			* system logger that is being used.
100			*/
101			private Logger _logger = ReferenceManager.getInstance().getLogger();
102
103			/**
104			* A reference to the reference manager in use
105			*/
106			private ReferenceManager _refman = ReferenceManager.getInstance();
107
108			/**
109			* A reference to the PacketSorter.
110			*/
111			private PacketSorter _packetSorter;
112
113			//---STATIC ATTRIBUTES---
114
115			}