Mercurial > hg > blitz_stable

annotate src/org/dancres/blitz/remote/AdminIteratorImpl.java @ 0:3dc0c5604566

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Initial checkin of blitz 2.0 fcs - no installer yet.
author Dan Creswell <dan.creswell@gmail.com>
date Sat, 21 Mar 2009 11:00:06 +0000
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3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
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1 package org.dancres.blitz.remote;
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2
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3 import java.rmi.RemoteException;
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4
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5 import net.jini.core.entry.Entry;
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6 import net.jini.core.entry.UnusableEntryException;
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7
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8 import com.sun.jini.outrigger.AdminIterator;
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9
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10 import org.dancres.blitz.EntryChit;
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11
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12 import org.dancres.blitz.mangler.EntryMangler;
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13
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14 import org.dancres.blitz.remote.view.EntryViewUID;
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16 public class AdminIteratorImpl implements AdminIterator {
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17 static final int CHUNK_SIZE = 50;
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18
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19 private EntryViewUID theViewId;
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20 private AdminServer theStub;
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21 private EntryMangler theMangler;
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22
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23 private boolean isDone;
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24
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25 private EntryChit[] theCurrentBatch;
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26 private int theOffset = -1;
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27
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28 private int theChunkSize;
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29
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30 AdminIteratorImpl(EntryMangler aMangler, EntryViewUID aViewId,
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31 AdminServer aStub) {
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32 this(aMangler, aViewId, CHUNK_SIZE, aStub);
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33 }
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34
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35 AdminIteratorImpl(EntryMangler aMangler, EntryViewUID aViewId,
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36 AdminServer aStub, EntryChit[] anInitialBatch) {
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37 this(aMangler, aViewId, CHUNK_SIZE, aStub, anInitialBatch);
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38 }
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39
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40 AdminIteratorImpl(EntryMangler aMangler, EntryViewUID aViewId,
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41 int aChunkSize, AdminServer aStub) {
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42 theViewId = aViewId;
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43 theStub = aStub;
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44 theMangler = aMangler;
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45 theChunkSize = aChunkSize;
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46 }
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47
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48 AdminIteratorImpl(EntryMangler aMangler, EntryViewUID aViewId,
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49 int aChunkSize, AdminServer aStub, EntryChit[] anInitialBatch) {
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50 theViewId = aViewId;
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51 theStub = aStub;
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52 theMangler = aMangler;
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53 theChunkSize = aChunkSize;
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54
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55 if (anInitialBatch != null) {
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56 theCurrentBatch = anInitialBatch;
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57 theOffset = 0;
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58 }
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59 }
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60
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61 public Entry next() throws UnusableEntryException, RemoteException {
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62 if (isDone)
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63 return null;
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64
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65 if ((theOffset == -1) || (theOffset >= theCurrentBatch.length)) {
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66 // Haven't got a batch yet
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67 theCurrentBatch = theStub.getNext(theViewId, theChunkSize);
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68 theOffset = 0;
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69 }
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70
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71 if (theCurrentBatch == null) {
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72 isDone = true;
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73 return null;
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74 }
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75
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76 return theMangler.unMangle(theCurrentBatch[theOffset++].getEntry());
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77 }
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78
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79 public void delete() throws RemoteException {
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80 if (theCurrentBatch != null)
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81 theStub.delete(theCurrentBatch[theOffset - 1].getCookie());
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82 }
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83
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84 public void close() throws RemoteException {
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85 theStub.close(theViewId);
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86 }
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87 }