Mercurial > hg > blitz_stable

comparison src/org/dancres/blitz/entry/WriteEscort.java @ 0:3dc0c5604566

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
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
parents
children
comparison
equal deleted inserted replaced
-1:000000000000 0:3dc0c5604566
1 package org.dancres.blitz.entry;
2
3 import net.jini.core.transaction.TransactionException;
4
5 /**
6 Whenever a write is performed, it needs protection until commit time.
7 This is achieved by escorting the written Entry through the write process
8 with an instance of this type. The Escort is responsible for setting
9 appropriate TxnLocks etc. to achieve the required protection.
10 */
11 public interface WriteEscort {
12 /**
13 Called before the Entry which is being written actually becomes
14 available in the filesystem. At this point, an ID has been allocated
15 etc. but the Entry is not visible outside of this thread.
16
17 @return <code>true</code> if the write should proceed, false otherwise
18 */
19 public boolean writing(OpInfo anOp);
20 }