Mercurial > hg > blitz_condensed
annotate src/org/dancres/blitz/SearchFactory.java @ 34:6f68e94c1fb8 default tip
Add CondensedStats monitoring utility, equivalent to vmstat
author | Dominic Cleal <dominic-cleal@cdo2.com> |
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date | Thu, 05 Aug 2010 11:07:25 +0100 |
parents | 3dc0c5604566 |
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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 |
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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 } |