Mercurial > hg > blitz_condensed
comparison src/org/dancres/blitz/entry/ci/FifoCacheLine.java @ 0:3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 21 Mar 2009 11:00:06 +0000 |
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-1:000000000000 | 0:3dc0c5604566 |
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1 package org.dancres.blitz.entry.ci; | |
2 | |
3 import java.util.Set; | |
4 import java.util.HashSet; | |
5 import java.util.TreeSet; | |
6 | |
7 import java.util.ArrayList; | |
8 import java.util.LinkedList; | |
9 import java.util.List; | |
10 | |
11 import org.dancres.blitz.oid.OID; | |
12 | |
13 import org.dancres.blitz.entry.TupleLocator; | |
14 import org.dancres.blitz.entry.EntrySleeve; | |
15 | |
16 /** | |
17 Maintains a list of all entries with the same hashcode for a particular | |
18 field. | |
19 */ | |
20 class FifoCacheLine { | |
21 private Set theIds = new TreeSet(); | |
22 | |
23 TupleLocator getLocator() { | |
24 if (theIds.size() == 0) | |
25 return ArrayLocatorImpl.EMPTY_LOCATOR; | |
26 else | |
27 return new FifoCacheLineLocatorImpl(getIdList(), this); | |
28 } | |
29 | |
30 private Object[] getIdList() { | |
31 Object[] myIds = new Object[theIds.size()]; | |
32 theIds.toArray(myIds); | |
33 | |
34 return myIds; | |
35 } | |
36 | |
37 void insert(EntrySleeve aSleeve) { | |
38 theIds.add(aSleeve.getOID()); | |
39 } | |
40 | |
41 void remove(EntrySleeve aSleeve) { | |
42 theIds.remove(aSleeve.getOID()); | |
43 } | |
44 | |
45 int getSize() { | |
46 return theIds.size(); | |
47 } | |
48 } |