Mercurial > hg > blitz_condensed
view src/org/dancres/blitz/entry/ci/CacheLineLocatorImpl.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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package org.dancres.blitz.entry.ci; import java.io.IOException; import org.dancres.blitz.oid.OID; import org.dancres.blitz.entry.TupleLocator; /** Used by CacheIndexer. */ class CacheLineLocatorImpl implements TupleLocator { private Object[] theOIDs; private CacheLine theCacheLine; private int theIndex = 0; private OID theCurrent; CacheLineLocatorImpl(Object[] aListOfOIDs, CacheLine aCacheLine) { theOIDs = aListOfOIDs; theCacheLine = aCacheLine; } /** Invoke this to load the next matching Tuple. @return <code>true</code> if there was a tuple, <code>false</code> otherwise */ public boolean fetchNext() throws IOException { if (theIndex >= theOIDs.length) return false; theCurrent = (OID) theOIDs[theIndex++]; return true; } /** @return the OID of the tuple just fetched with <code>fetchNext</code> */ public OID getOID() { return theCurrent; } /** When you've finished with the TupleLocator instance, call release. */ public void release() throws IOException { // System.out.println("Iterated: " + theIndex); } }