Mercurial > hg > blitz_stable
annotate src/org/dancres/blitz/entry/ci/FifoCacheLine.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.entry.ci; |
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2 |
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3 import java.util.Set; |
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4 import java.util.HashSet; |
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5 import java.util.TreeSet; |
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6 |
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7 import java.util.ArrayList; |
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8 import java.util.LinkedList; |
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9 import java.util.List; |
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10 |
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11 import org.dancres.blitz.oid.OID; |
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12 |
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13 import org.dancres.blitz.entry.TupleLocator; |
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14 import org.dancres.blitz.entry.EntrySleeve; |
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15 |
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16 /** |
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17 Maintains a list of all entries with the same hashcode for a particular |
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18 field. |
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19 */ |
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20 class FifoCacheLine { |
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21 private Set theIds = new TreeSet(); |
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22 |
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23 TupleLocator getLocator() { |
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24 if (theIds.size() == 0) |
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25 return ArrayLocatorImpl.EMPTY_LOCATOR; |
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26 else |
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27 return new FifoCacheLineLocatorImpl(getIdList(), this); |
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28 } |
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29 |
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30 private Object[] getIdList() { |
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31 Object[] myIds = new Object[theIds.size()]; |
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32 theIds.toArray(myIds); |
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33 |
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34 return myIds; |
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35 } |
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36 |
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37 void insert(EntrySleeve aSleeve) { |
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38 theIds.add(aSleeve.getOID()); |
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39 } |
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40 |
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41 void remove(EntrySleeve aSleeve) { |
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42 theIds.remove(aSleeve.getOID()); |
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43 } |
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44 |
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45 int getSize() { |
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46 return theIds.size(); |
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47 } |
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48 } |