Jini Print Service Tutorial -- Lesson 5. Print Job Events

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61
    62
    63
    64
    65
    66
    67
    68
    69
    70
    71
    72
    73
    74
    75
    76
    77
    78
    79
    80
    81
    82
    83
    84
    85
    86
    87
    88
    89
    90
    91
    92
    93
    94
    95
    96
    97
    98
    99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124
    125
    126
    127
    128
    129
    130
    131
    132
    133
    134
    135
    136
    137
    138
    139
    140
    141
    142
    143
    144
    145
    146
    147
    148
    149
    150
    151
    152
    153
    154
    155
    156
    157
    158
    159
    160
    161
    162
    163
    164
    import java.io.IOException;
    import java.rmi.RemoteException;
    import java.rmi.server.UnicastRemoteObject;
    import java.util.Locale;
    import javax.print.attribute.Attribute;
    import javax.print.attribute.HashDocAttributeSet;
    import javax.print.attribute.HashPrintRequestAttributeSet;
    import javax.print.attribute.PrintJobAttributeSet;
    import javax.print.attribute.PrintRequestAttribute;
    import javax.print.attribute.standard.DocumentName;
    import javax.print.attribute.standard.JobName;
    import javax.print.attribute.standard.JobState;
    import javax.print.attribute.standard.Media;
    import javax.print.attribute.standard.MediaColor;
    import javax.print.attribute.standard.MediaKind;
    import javax.print.attribute.standard.MediaOpacity;
    import javax.print.attribute.standard.MediaSize;
    import javax.print.attribute.standard.OrientationRequested;
    import javax.print.exception.PrintException;
    import net.jini.core.entry.Entry;
    import net.jini.core.event.EventRegistration;
    import net.jini.core.event.RemoteEvent;
    import net.jini.core.event.RemoteEventListener;
    import net.jini.core.lease.Lease;
    import net.jini.core.lease.UnknownLeaseException;
    import net.jini.core.lookup.ServiceRegistrar;
    import net.jini.core.lookup.ServiceTemplate;
    import net.jini.lease.LeaseRenewalManager;
    import net.jini.print.job.PrintJob;
    import net.jini.print.job.PrintJobAndLease;
    import net.jini.print.job.PrintJobEvent;
    import net.jini.print.job.PrintRequest;
    import net.jini.print.lookup.AttributeEntry;
    import net.jini.print.lookup.FlavorEntry;
    import net.jini.print.lookup.MediaEntry;
    import net.jini.print.service.PrintService;
    import org.jpwg.jini.print.data.StringDoc;
    . . .
    class PrintJobEventListener
        extends UnicastRemoteObject
        implements RemoteEventListener
        {
        public PrintJobEventListener()
            throws RemoteException
            {
            super();
            }
        public void notify
            (RemoteEvent theEvent)
            {
            try
                {
                PrintJobEvent thePrintJobEvent = (PrintJobEvent) theEvent;
                JobState theJobState = (JobState)
                    thePrintJobEvent.getAttributes().get (JobState.class);
                System.out.println ("Job state = " + theJobState);
                }
            catch (ClassNotFoundException exc)
                {
                System.out.println ("Couldn't get attributes from print job event");
                }
            catch (IOException exc)
                {
                System.out.println ("Couldn't get attributes from print job event");
                }
            }
        }
    . . .
    try
        {
        LeaseRenewalManager theLRM = new LeaseRenewalManager();
        Media theMedia = new Media
            (new Attribute[]
                {MediaSize.NA.LETTER,
                 MediaColor.PINK,
                 MediaOpacity.OPAQUE,
                 MediaKind.SHEET});
        StringDoc theDoc =
            new StringDoc
                ("Hello, world!",
                 new HashDocAttributeSet
                    (new DocumentName
                        ("Test String",
                         Locale.getDefault())));
        ServiceRegistrar theJLUS = // Obtain a Jini Lookup Service (JLUS) proxy
        ServiceTemplate theServiceTemplate =
            new ServiceTemplate
                (null,
                 new Class[] {PrintService.class},
                 new Entry[]
                    {new FlavorEntry (theDoc.getDocFlavor()),
                     new MediaEntry (theMedia),
                     new AttributeEntry (OrientationRequested.LANDSCAPE)});
        PrintService thePrintService =
            (PrintService) theJLUS.lookup (theServiceTemplate);
        if (thePrintService != null)
            {
            PrintRequest thePrintRequest =
                thePrintService.createDocPrintRequest
                    (theDoc,
                     new HashPrintRequestAttributeSet
                        (new PrintRequestAttribute[]
                            {theMedia,
                             OrientationRequested.LANDSCAPE,
                             new JobName
                                ("Test Job",
                                 Locale.getDefault())}));
            EventRegistration theEventRegistration =
                thePrintRequest.addEventListener
                    (false,
                     false,
                     new Class[] {JobState.class},
                     null,
                     false,
                     new PrintJobEventListener(),
                     null,
                     Lease.ANY);
            theLRM.renewUntil (theEventRegistration.getLease(), Lease.ANY, null);
            PrintJobAndLease theJobAndLease =
                thePrintRequest.print (Lease.ANY);
            PrintJob theJob = theJobAndLease.printJob;
            theLRM.renewUntil (theJobAndLease.lease, Lease.ANY, null);
            for (;;)
                {
                PrintJobAttributeSet theJobAttributes = theJob.getAttributes();
                JobState theJobState =
                    (JobState) theJobAttributes.get (JobState.class);
                System.out.println ("Job state = " + theJobState);
                if (theJobState == JobState.ABORTED ||
                        theJobState == JobState.CANCELED ||
                        theJobState == JobState.COMPLETED)
                    {
                    break;
                    }
                Thread.currentThread().sleep (10000L);
                }
            theLRM.cancel (theEventRegistration.getLease());
            theLRM.cancel (theJobAndLease.lease);
            }
        else
            {
            // This code executed if the JLUS couldn't find any print services
            }
        }
    catch (PrintException exc)
        {
        // This code executed if a printing error occurred
        // Thrown by any of the above
        }
    catch (RemoteException exc)
        {
        // This code executed if a remote error occurred
        // Thrown by any of the above
        }
    catch (InterruptedException exc)
        {
        // This code executed if the current thread is interrupted
        // Thrown by Thread.currentThread().sleep()
        }
    catch (UnknownLeaseException exc)
        {
        // This code executed if the print job's lease is unknown
        // Thrown by theLRM.cancel()
        }