org.alfresco.filesys.alfresco
Class AlfrescoTxDiskDriver

java.lang.Object
  org.alfresco.filesys.alfresco.AlfrescoDiskDriver
      org.alfresco.filesys.alfresco.AlfrescoTxDiskDriver

All Implemented Interfaces:

ExtendedDiskInterface, org.alfresco.jlan.server.core.DeviceInterface, org.alfresco.jlan.server.filesys.DiskInterface, org.alfresco.jlan.server.filesys.IOCtlInterface, org.alfresco.jlan.server.filesys.TransactionalFilesystemInterface

Direct Known Subclasses:

AVMDiskDriver, ContentDiskDriver

public abstract class AlfrescoTxDiskDriver
extends AlfrescoDiskDriver
implements org.alfresco.jlan.server.filesys.TransactionalFilesystemInterface

Alfresco Tx Disk Driver Base Class

Provides common code to the Alfresco filesystem implementations.

Nested Class Summary

static interface	AlfrescoTxDiskDriver.CallableIO An extended Callable that throws IOExceptions.
protected static class	AlfrescoTxDiskDriver.PropagatingException A wrapper for checked exceptions to be passed through the retrying transaction handler.

Field Summary

Fields inherited from class org.alfresco.filesys.alfresco.AlfrescoDiskDriver

ioControlHandler, m_transactionService

Constructor Summary

AlfrescoTxDiskDriver()

Method Summary

void	beginReadTransaction(org.alfresco.jlan.server.SrvSession sess) Begin a read-only transaction
void	beginWriteTransaction(org.alfresco.jlan.server.SrvSession sess) Begin a writeable transaction
java.lang.Object	doInWriteTransaction(org.alfresco.jlan.server.SrvSession sess, AlfrescoTxDiskDriver.CallableIO callback) Perform a retryable operation in a write transaction
void	endTransaction(org.alfresco.jlan.server.SrvSession sess, java.lang.Object tx) End an active transaction

Methods inherited from class org.alfresco.filesys.alfresco.AlfrescoDiskDriver

getIoControlHandler, getServiceRegistry, getTransactionService, processIOControl, registerContext, setIoControlHandler, setServiceRegistry, setTransactionService

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.alfresco.jlan.server.filesys.DiskInterface

closeFile, createDirectory, createFile, deleteDirectory, deleteFile, fileExists, flushFile, getFileInformation, isReadOnly, openFile, readFile, renameFile, seekFile, setFileInformation, startSearch, truncateFile, writeFile

Methods inherited from interface org.alfresco.jlan.server.core.DeviceInterface

createContext, treeClosed, treeOpened

Constructor Detail

AlfrescoTxDiskDriver

public AlfrescoTxDiskDriver()

Method Detail

beginReadTransaction

public void beginReadTransaction(org.alfresco.jlan.server.SrvSession sess)

Begin a read-only transaction

Specified by:

beginReadTransaction in interface org.alfresco.jlan.server.filesys.TransactionalFilesystemInterface

Parameters:

sess - SrvSession

beginWriteTransaction

public void beginWriteTransaction(org.alfresco.jlan.server.SrvSession sess)

Begin a writeable transaction

Specified by:

beginWriteTransaction in interface org.alfresco.jlan.server.filesys.TransactionalFilesystemInterface

Parameters:

sess - SrvSession

doInWriteTransaction

public java.lang.Object doInWriteTransaction(org.alfresco.jlan.server.SrvSession sess,
                                             AlfrescoTxDiskDriver.CallableIO callback)
                                      throws java.io.IOException

Perform a retryable operation in a write transaction

WARNING : side effect - that the current transaction, if any, is ended.

Parameters:

sess - the server session

callback - callback for the retryable operation

Returns:

the result of the operation

Throws:

java.lang.Exception

java.io.IOException

endTransaction

public void endTransaction(org.alfresco.jlan.server.SrvSession sess,
                           java.lang.Object tx)

End an active transaction

Specified by:

endTransaction in interface org.alfresco.jlan.server.filesys.TransactionalFilesystemInterface

Parameters:

sess - SrvSession

tx - Object