Mercurial > hg > blitz_condensed
comparison src/org/dancres/blitz/txn/PrepCommitCommand.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.txn; | |
2 | |
3 import java.io.Serializable; | |
4 | |
5 import net.jini.core.transaction.server.TransactionConstants; | |
6 | |
7 import org.prevayler.Command; | |
8 import org.prevayler.PrevalentSystem; | |
9 | |
10 /** | |
11 Command to issue atomic prepare and commit triggered as result of | |
12 a transaction manager (or the SpaceImpl) invoking prepareAndCommit() | |
13 as opposed to the normal prepared() followed by commit() | |
14 */ | |
15 class PrepCommitCommand implements Command { | |
16 static final long serialVersionUID = 9131472819768078508L; | |
17 | |
18 private TxnState theTxn; | |
19 | |
20 PrepCommitCommand(TxnState aTxn) { | |
21 theTxn = aTxn; | |
22 } | |
23 | |
24 public Serializable execute(PrevalentSystem aSystem) throws Exception { | |
25 TxnManagerState mySystem = (TxnManagerState) aSystem; | |
26 | |
27 int myResult = mySystem.prepare(theTxn); | |
28 | |
29 if (myResult == TransactionConstants.PREPARED) { | |
30 mySystem.commit(theTxn.getId()); | |
31 return new Integer(TransactionConstants.COMMITTED); | |
32 } else | |
33 return new Integer(myResult); | |
34 } | |
35 | |
36 public String toString() { | |
37 StringBuffer myString = new StringBuffer(); | |
38 | |
39 myString.append(theTxn.toString()); | |
40 myString.append("- : PC : " + theTxn.getId()); | |
41 | |
42 return myString.toString(); | |
43 } | |
44 } |