Mercurial > hg > blitz_stable
annotate src/org/dancres/blitz/remote/perf/LeaseImpl.java @ 4:d3ec5ebc3dba
Fix up a small race-condition and and a todo for thread-safety in MatchSetImpl.
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 25 Apr 2009 08:38:27 +0100 |
parents | 3dc0c5604566 |
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0
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1 package org.dancres.blitz.remote.perf; |
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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 com.sun.jini.lease.AbstractLease; |
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6 |
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7 import net.jini.core.lease.UnknownLeaseException; |
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8 import net.jini.core.lease.LeaseDeniedException; |
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9 import net.jini.core.lease.LeaseMap; |
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10 import net.jini.core.lease.Lease; |
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11 |
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12 import net.jini.id.Uuid; |
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13 import net.jini.id.ReferentUuid; |
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14 |
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15 import org.dancres.blitz.lease.SpaceUID; |
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16 |
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17 /** |
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18 Generic lease implementation used to wrap all Blitz's internal lease |
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19 implementations. |
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20 */ |
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21 class LeaseImpl extends AbstractLease implements ReferentUuid { |
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22 Landlord theStub; |
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23 Uuid theUuid; |
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24 |
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25 private SpaceUID theUID; |
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26 |
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27 LeaseImpl(Landlord aLandlord, Uuid aUuid, SpaceUID aUID, |
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28 long anExpiration) { |
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29 |
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30 super(anExpiration); |
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31 theStub = aLandlord; |
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32 theUID = aUID; |
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33 theUuid = aUuid; |
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34 } |
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35 |
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36 public Uuid getReferentUuid() { |
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37 return theUuid; |
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38 } |
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39 |
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40 protected long doRenew(long duration) |
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41 throws UnknownLeaseException, LeaseDeniedException, RemoteException { |
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42 |
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43 return theStub.renew(theUID, duration); |
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44 } |
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45 |
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46 public void cancel() |
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47 throws UnknownLeaseException, RemoteException { |
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48 |
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49 theStub.cancel(theUID); |
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50 } |
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51 |
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52 void setExpiration(long anExpiry) { |
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53 expiration = anExpiry; |
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54 } |
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55 |
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56 SpaceUID getUID() { |
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57 return theUID; |
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58 } |
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59 |
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60 /** |
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61 Each entry in a LeaseMap needs a duration to renew for so, when we |
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62 create the leasemap, we insert the current lease as having the specified |
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63 renewal duration. |
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64 */ |
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65 public LeaseMap createLeaseMap(long aDuration) { |
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66 return new LeaseMapImpl(this, aDuration, theStub); |
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67 } |
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68 |
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69 public boolean canBatch(Lease aLease) { |
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70 |
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71 if (aLease instanceof LeaseImpl) { |
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72 LeaseImpl myOther = (LeaseImpl) aLease; |
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73 |
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74 return myOther.theStub.equals(theStub); |
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75 } |
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76 |
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77 return false; |
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78 } |
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79 |
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80 public int hashCode() { |
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81 return theUID.hashCode(); |
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82 } |
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83 |
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84 public boolean equals(Object anObject) { |
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85 if (anObject instanceof LeaseImpl) { |
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86 if (theUuid.equals(((LeaseImpl) anObject).theUuid)) { |
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87 return (theUID.equals(((LeaseImpl) anObject).theUID)); |
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88 } |
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89 } |
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90 |
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91 return false; |
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92 } |
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93 } |