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