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comparison src/org/dancres/blitz/txn/TxnOp.java @ 0:3dc0c5604566

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Initial checkin of blitz 2.0 fcs - no installer yet.
author Dan Creswell <dan.creswell@gmail.com>
date Sat, 21 Mar 2009 11:00:06 +0000
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1 package org.dancres.blitz.txn;
2
3 import java.io.Serializable;
4 import java.io.IOException;
5
6 import org.dancres.blitz.entry.OpInfo;
7
8 /**
9 <p>
10 Each separate operation of a Transaction identified by TxnId is a TxnOp
11 which should implement this interface. TxnOp's are repeatable, disk-level
12 actions which can be logged to disk and re-applied during system recovery.
13 </p>
14 */
15 public interface TxnOp extends Serializable {
16 /**
17 Must be invoked inside an active DiskTxn.
18 */
19 public void restore(TxnState aState) throws IOException;
20 public void commit(TxnState aState) throws IOException;
21 public void abort(TxnState aState) throws IOException;
22 }