Package com.arjuna.ats.internal.arjuna.objectstore

Class FileLockingStore

java.lang.Object

com.arjuna.ats.arjuna.objectstore.ObjectStore

com.arjuna.ats.internal.arjuna.objectstore.FileSystemStore

com.arjuna.ats.internal.arjuna.objectstore.FileLockingStore

All Implemented Interfaces:

BaseStore, ObjectStoreAPI, ParticipantStore, RecoveryStore, TxLog

public abstract class FileLockingStore
extends FileSystemStore

An refinement of the basic FileSystemStore which provides file-level locking.

Since:

JTS 1.0.

Version:

$Id: FileLockingStore.java 2342 2006-03-30 13:06:17Z $

Author:

Mark Little (mark@arjuna.com)

Field Summary

Fields inherited from class com.arjuna.ats.internal.arjuna.objectstore.FileSystemStore

doSync, scanZeroLengthFiles, syncWrites

Fields inherited from class com.arjuna.ats.arjuna.objectstore.ObjectStore

_objectStoreRoot, shareStatus

Constructor Summary

Constructors

Constructor	Description
FileLockingStore(ObjectStoreEnvironmentBean objectStoreEnvironmentBean)

Method Summary

Modifier and Type	Method	Description
protected boolean	lock(File fd, int lmode, boolean create)	Lock files as we would do on a Unix system.
protected abstract InputObjectState	read_state(Uid u, String tn, int s)
protected abstract boolean	remove_state(Uid u, String tn, int s)
protected boolean	unlock(File fd)	Unlock the file in the object store.
protected abstract boolean	write_state(Uid u, String tn, OutputObjectState buff, int s)

Methods inherited from class com.arjuna.ats.internal.arjuna.objectstore.FileSystemStore

addToCache, allObjUids, allTypes, allTypes, closeAndUnlock, createHierarchy, exists, genPathName, getStoreName, openAndLock, read_committed, read_uncommitted, remove_committed, remove_uncommitted, removeFromCache, removeFromCache, renameFromTo, renameFromToInternal, supressEntry, synchronousWrites, truncate, write_committed, write_uncommitted

Methods inherited from class com.arjuna.ats.arjuna.objectstore.ObjectStore

allObjUids, fullCommitNeeded, initialise, isType, locateStore, revealedId, shareState, start, stop, storeDir, storeRoot, sync

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.arjuna.ats.arjuna.objectstore.ParticipantStore

commit_state

Methods inherited from interface com.arjuna.ats.arjuna.objectstore.RecoveryStore

currentState, hide_state, reveal_state

Constructor Details

FileLockingStore

public FileLockingStore(ObjectStoreEnvironmentBean objectStoreEnvironmentBean)
                 throws ObjectStoreException

Throws:

ObjectStoreException

Method Details

read_state

protected abstract InputObjectState read_state(Uid u,
 String tn,
 int s)
                                        throws ObjectStoreException

Specified by:

read_state in class FileSystemStore

Throws:

ObjectStoreException

remove_state

protected abstract boolean remove_state(Uid u,
 String tn,
 int s)
                                 throws ObjectStoreException

Specified by:

remove_state in class FileSystemStore

Throws:

ObjectStoreException

write_state

protected abstract boolean write_state(Uid u,
 String tn,
 OutputObjectState buff,
 int s)
                                throws ObjectStoreException

Specified by:

write_state in class FileSystemStore

Throws:

ObjectStoreException

lock

protected boolean lock(File fd,
 int lmode,
 boolean create)

Lock files as we would do on a Unix system.

Overrides:

lock in class FileSystemStore

unlock

protected boolean unlock(File fd)

Description copied from class: FileSystemStore

Unlock the file in the object store.

Overrides:

unlock in class FileSystemStore