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annotate src/org/dancres/blitz/TxnControlImpl.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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3dc0c5604566 Initial checkin of blitz 2.0 fcs - no installer yet.
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1 package org.dancres.blitz;
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2
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3 import java.io.IOException;
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4 import java.io.Serializable;
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5
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6 import java.rmi.RemoteException;
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7
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8 import net.jini.core.transaction.server.TransactionManager;
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9 import net.jini.core.transaction.UnknownTransactionException;
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10 import net.jini.core.transaction.TransactionException;
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12 import org.dancres.blitz.txn.TxnState;
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13 import org.dancres.blitz.txn.TxnManager;
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14
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15 /**
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16 All of this could be done in-line within SpaceImpl this just keeps
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17 the method count down and separates the code a little. Responsible
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18 for handling external requests against transactions and dispatching
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19 to the appropriate internal objects.
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20
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21 @todo Serializable here is naughty and strictly to facilitate unit tests
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22 via TxnMgr class.
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23 */
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24 class TxnControlImpl implements TxnControl, Serializable {
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26 public int prepare(TransactionManager aMgr, long anId)
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27 throws UnknownTransactionException, RemoteException {
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29 TxnManager myManager = TxnManager.get();
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31 TxnState myState = myManager.getTxnFor(aMgr, anId);
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32
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33 return myManager.prepare(myState);
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34 }
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35
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36 public void commit(TransactionManager aMgr, long anId)
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37 throws UnknownTransactionException, RemoteException {
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38
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39 TxnManager myManager = TxnManager.get();
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41 TxnState myState = myManager.getTxnFor(aMgr, anId);
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42
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43 myManager.commit(myState);
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44 }
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46 public void abort(TransactionManager aMgr, long anId)
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47 throws UnknownTransactionException, RemoteException {
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48
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49 TxnManager myManager = TxnManager.get();
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51 TxnState myState = myManager.getTxnFor(aMgr, anId);
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52
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53 myManager.abort(myState);
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54 }
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56 public int prepareAndCommit(TransactionManager aMgr, long anId)
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57 throws UnknownTransactionException, RemoteException {
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58
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59 TxnManager myManager = TxnManager.get();
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60
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61 TxnState myState = myManager.getTxnFor(aMgr, anId);
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62
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63 return myManager.prepareAndCommit(myState);
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64 }
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65
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66 public void requestSnapshot() throws TransactionException, IOException {
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67 TxnManager.get().requestSnapshot();
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68 }
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69
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70 public void backup(String aDir) throws IOException {
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71 TxnManager.get().hotBackup(aDir);
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72 }
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73 }