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annotate src/org/dancres/blitz/txn/PrepCommitCommand.java @ 35:6f68e94c1fb8 default tip

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Add CondensedStats monitoring utility, equivalent to vmstat
author Dominic Cleal <dominic-cleal@cdo2.com>
date Thu, 05 Aug 2010 11:07:25 +0100
parents 3dc0c5604566
children
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3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
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1 package org.dancres.blitz.txn;
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2
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3 import java.io.Serializable;
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5 import net.jini.core.transaction.server.TransactionConstants;
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6
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7 import org.prevayler.Command;
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8 import org.prevayler.PrevalentSystem;
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9
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10 /**
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11 Command to issue atomic prepare and commit triggered as result of
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12 a transaction manager (or the SpaceImpl) invoking prepareAndCommit()
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13 as opposed to the normal prepared() followed by commit()
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14 */
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15 class PrepCommitCommand implements Command {
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16 static final long serialVersionUID = 9131472819768078508L;
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17
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18 private TxnState theTxn;
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20 PrepCommitCommand(TxnState aTxn) {
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21 theTxn = aTxn;
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22 }
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23
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24 public Serializable execute(PrevalentSystem aSystem) throws Exception {
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25 TxnManagerState mySystem = (TxnManagerState) aSystem;
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26
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27 int myResult = mySystem.prepare(theTxn);
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29 if (myResult == TransactionConstants.PREPARED) {
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30 mySystem.commit(theTxn.getId());
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31 return new Integer(TransactionConstants.COMMITTED);
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32 } else
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33 return new Integer(myResult);
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34 }
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35
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36 public String toString() {
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37 StringBuffer myString = new StringBuffer();
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38
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39 myString.append(theTxn.toString());
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40 myString.append("- : PC : " + theTxn.getId());
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41
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42 return myString.toString();
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43 }
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44 }