Mercurial > hg > blitz_stable
annotate src/org/dancres/blitz/stats/InstanceCount.java @ 32:243c74d599bf
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author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 12 Jun 2010 10:41:47 +0100 |
parents | 3dc0c5604566 |
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0
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1 package org.dancres.blitz.stats; |
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2 |
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3 /** |
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4 <p>Tracks the number of instance of a particular type within a Blitz |
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5 instance. The instance count accounts for writes and takes but does not |
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6 account for lease expired entries because the cleanup of lease expired |
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7 entries is done lazily. Thus the instance counts should be treated as |
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8 a guide not an exact number.</p> |
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9 */ |
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10 public class InstanceCount implements Stat, StatGenerator { |
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11 private long theId = StatGenerator.UNSET_ID; |
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12 |
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13 private String theType; |
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14 private int theCount; |
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Initial checkin of blitz 2.0 fcs - no installer yet.
Dan Creswell <dan.creswell@gmail.com>
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15 |
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16 public InstanceCount(String aType, int aCount) { |
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17 theType = aType; |
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18 theCount = aCount; |
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19 } |
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20 |
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21 private InstanceCount(long anId, String aType, int aCount) { |
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22 theId = anId; |
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23 theType = aType; |
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24 theCount = aCount; |
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25 } |
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parents:
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26 |
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27 public void setId(long anId) { |
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28 theId = anId; |
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29 } |
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30 |
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31 public long getId() { |
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32 return theId; |
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33 } |
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34 |
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35 public synchronized Stat generate() { |
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36 InstanceCount myStat = new InstanceCount(theId, theType, theCount); |
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37 return myStat; |
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Dan Creswell <dan.creswell@gmail.com>
parents:
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38 } |
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Dan Creswell <dan.creswell@gmail.com>
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39 |
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40 public String getType() { |
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41 return theType; |
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Dan Creswell <dan.creswell@gmail.com>
parents:
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42 } |
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Dan Creswell <dan.creswell@gmail.com>
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43 |
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44 public int getCount() { |
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45 return theCount; |
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Dan Creswell <dan.creswell@gmail.com>
parents:
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46 } |
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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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47 |
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48 public synchronized void wrote() { |
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49 ++theCount; |
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Dan Creswell <dan.creswell@gmail.com>
parents:
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50 } |
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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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51 |
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52 public synchronized void took() { |
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53 --theCount; |
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54 } |
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Dan Creswell <dan.creswell@gmail.com>
parents:
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55 |
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56 public String toString() { |
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57 return "Total instance of type " + theType + " is " + theCount; |
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parents:
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58 } |
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59 } |