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annotate src/org/dancres/blitz/SearchFactory.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;
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2
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3 import java.lang.ref.WeakReference;
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4 import java.io.IOException;
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5
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6 import org.dancres.blitz.txnlock.BaulkedParty;
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7 import org.dancres.blitz.entry.SearchVisitor;
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8 import org.dancres.blitz.entry.EntryRepository;
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9 import org.dancres.blitz.entry.EntryRepositoryFactory;
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10
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11 /**
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12 * Use this class for standard blocking searches, single or bulk. For these
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13 * kinds of searches we care not how many conflicts we get, just when they
3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
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14 * are resolved at which point we pass them over to our associated MatchTask
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15 * which can choose to act on them or not.
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16 */
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17 public class SearchFactory implements VisitorBaulkedPartyFactory {
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18 public BaulkedParty newParty(SingleMatchTask aMatchTask) {
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19 return new BaulkedPartyImpl(aMatchTask);
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20 }
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21
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22 public BaulkedParty newParty(BulkTakeVisitor aMatchTask) {
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23 return new BaulkedPartyImpl(aMatchTask);
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24 }
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25
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26 public void enableResolutionSignal() {
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27 // Nothing to do for the standard search case
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28 }
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29
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30 private static class BaulkedPartyImpl implements BaulkedParty {
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31 private WeakReference _task;
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32
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33 public BaulkedPartyImpl(SingleMatchTask aMatchTask) {
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34 _task = new WeakReference(aMatchTask);
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35 }
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36
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37 public BaulkedPartyImpl(BulkMatchTask aMatchTask) {
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38 _task = new WeakReference(aMatchTask);
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39 }
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40
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41 public void blocked(Object aHandback) {
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42 // Doesn't matter
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43 }
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44
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45 public void unblocked(Object aHandback) {
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46 Handback myHandback = (Handback) aHandback;
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47
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48 try {
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49 SearchVisitor myVisitor = getVisitor();
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50
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51 if (myVisitor == null)
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52 return;
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53
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54 EntryRepository myRepos =
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55 EntryRepositoryFactory.get().get(myHandback.getType());
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56
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57 myRepos.find(myVisitor, myHandback.getOID(),
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58 myHandback.getEntry());
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59
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60 } catch (IOException aDbe) {
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61 }
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62 }
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63
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64 private SearchVisitor getVisitor() {
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65 MatchTask myTask = (MatchTask) _task.get();
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66
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67 if (myTask == null)
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68 return null;
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69 else
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70 return myTask.getVisitor();
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71 }
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72 }
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73 }