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annotate examples/helloworld/Taker.java @ 18:4580bb12db30

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Separate command execution from command logging.
author Dan Creswell <dan.creswell@gmail.com>
date Sun, 05 Jul 2009 16:26:25 +0100
parents 3dc0c5604566
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 package helloworld;
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2
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3 import java.rmi.RMISecurityManager;
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5 import net.jini.space.JavaSpace;
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7 import net.jini.core.entry.Entry;
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9 import net.jini.core.lease.Lease;
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11 /**
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12 Taker will attempt to take as many entry's as it can find. If any take
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13 blocks longer than 120 seconds, Taker assumes there are no more Entry's
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14 and stops.
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15 */
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16 public class Taker {
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18 public void exec() throws Exception {
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19 // Locate a JavaSpace - we will only find those registered
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20 // BEFORE we were started up - doing it properly requires
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21 // ServiceDiscoveryManager - for another time....
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22 //
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23 System.out.println("Looking for JavaSpace");
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25 Lookup myFinder = new Lookup(JavaSpace.class);
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27 JavaSpace mySpace = (JavaSpace) myFinder.getService();
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29 System.out.println("Got space - waiting for Entry's");
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30
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31 // We want to find any TestEntry instance so we don't set the
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32 // fields which gives us wildcard match
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33 Entry myTemplate = new TestEntry();
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34
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35 while (true) {
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36 Entry myResult = mySpace.take(myTemplate, null, 120 * 1000);
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37
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38 if (myResult == null) {
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39 System.out.println("No more entry's in the last 120 seconds");
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40 break;
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41 }
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43 System.out.println("Took: " + myResult);
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44 }
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45 }
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46
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47 public static void main(String args[]) {
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48 // We must set the RMI security manager to allow downloading of code
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49 // which, in this case, is the Blitz proxy amongst other things
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50 //
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51 try {
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52 if (System.getSecurityManager() == null)
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53 System.setSecurityManager(new RMISecurityManager());
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54
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55 new Taker().exec();
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56 } catch (Exception anE) {
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57 System.err.println("Whoops");
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58 anE.printStackTrace(System.err);
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59 }
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60 }
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61 }