Mercurial > hg > blitz_stable
annotate src/org/dancres/blitz/entry/LeaseTracker.java @ 8:fa7203ea1622
Remove some dead code (Dave Brosius)
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 23 May 2009 11:27:41 +0100 |
parents | 3dc0c5604566 |
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1 package org.dancres.blitz.entry; |
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Dan Creswell <dan.creswell@gmail.com>
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2 |
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3 import java.io.IOException; |
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4 |
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5 import org.dancres.blitz.lease.ReapFilter; |
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Dan Creswell <dan.creswell@gmail.com>
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6 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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7 /** |
3dc0c5604566
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Dan Creswell <dan.creswell@gmail.com>
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8 <p> |
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9 Tracks the lease expiries for all EntrySleeves of a particular type. |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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10 </p> |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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11 |
3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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12 <p> |
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13 When you are ready to process expired leases, invoke |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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14 <code>bringOutTheDead</code> which will cause the <code>LeaseTracker</code> |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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15 to pass one or more <code>TupleLocator<code> instances to the passed |
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16 <code>EntryReaper</code>. The <code>EntryReaper</code> should iterate |
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17 through each Locator instance and do the following: |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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18 </p> |
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Dan Creswell <dan.creswell@gmail.com>
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19 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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20 <ol> |
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21 <li>Load the <code>EntrySleeve</code> associated with the UID</li> |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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22 <li>Check it has actually expired. Note that, due to caching, the version |
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23 of the sleeve in cache may contain an updated expiry time which hasn't yet |
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24 been communicated to the <code>LeaseTracker</code>.</li> |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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25 <li>If the <code>EntrySleeve</code> has expired, filter using appropriate |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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26 <code>ReapFilter</code>s and mark the <code>EntrySleeve</code> for deletion |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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27 assuming the filters don't boycott.</li> |
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Dan Creswell <dan.creswell@gmail.com>
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28 </ol> |
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Dan Creswell <dan.creswell@gmail.com>
parents:
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29 |
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30 @see org.dancres.blitz.entry.TupleLocator |
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31 @see org.dancres.blitz.entry.EntryReaper |
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32 */ |
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33 public interface LeaseTracker { |
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34 /** |
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35 Locate expired entries and pass their UIDs to the specified filter. |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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36 */ |
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37 public void bringOutTheDead(EntryReaper aReaper) throws IOException; |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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38 |
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39 public void delete(PersistentEntry anEntry) throws IOException; |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
parents:
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40 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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41 public void update(PersistentEntry anEntry) throws IOException; |
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42 |
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43 public void write(PersistentEntry anEntry) throws IOException; |
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44 |
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45 public void close() throws IOException; |
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46 |
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47 public void delete() throws IOException; |
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48 } |