Package com.mckoi.store

Class JournalledSystem.AbstractResource

java.lang.Object

com.mckoi.store.JournalledSystem.AbstractResource

All Implemented Interfaces:

JournalledResource

Direct Known Subclasses:

JournalledSystem.NonLoggingResource, JournalledSystem.Resource

Enclosing class:

JournalledSystem

private abstract class JournalledSystem.AbstractResource
extends java.lang.Object
implements JournalledResource

An abstract resource.

Field Summary

Fields

Modifier and Type	Field	Description
protected StoreDataAccessor	data	The backing object.
protected long	id	The id assigned to this resource by this session.
protected java.lang.String	name	The unique name given this resource (the file name).
protected boolean	read_only	True if this resource is read_only.

Constructor Summary

Constructors

Constructor	Description
AbstractResource(java.lang.String name, long id, StoreDataAccessor data)	Constructs the resource.

Method Summary

Modifier and Type	Method	Description
long	getID()	Returns the unique id of this page.
int	getPageSize()	Returns the size of the page.
(package private) abstract void	notifyPostRecover()
(package private) abstract void	persistClose()
(package private) abstract void	persistDelete()
(package private) abstract void	persistPageChange(long page, int off, int len, java.io.DataInputStream din)
(package private) abstract void	persistSetSize(long new_size)
(package private) abstract void	synch()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.mckoi.store.JournalledResource

close, delete, exists, getSize, open, read, setSize, write

Field Detail

name

protected final java.lang.String name

The unique name given this resource (the file name).

id

protected final long id

The id assigned to this resource by this session. This id should not be used in any external source.

data

protected final StoreDataAccessor data

The backing object.

read_only

protected boolean read_only

True if this resource is read_only.

Constructor Detail

AbstractResource

AbstractResource(java.lang.String name,
                 long id,
                 StoreDataAccessor data)

Constructs the resource.

Method Detail

persistClose

abstract void persistClose()
                    throws java.io.IOException

Throws:

java.io.IOException

persistDelete

abstract void persistDelete()
                     throws java.io.IOException

Throws:

java.io.IOException

persistSetSize

abstract void persistSetSize(long new_size)
                      throws java.io.IOException

Throws:

java.io.IOException

persistPageChange

abstract void persistPageChange(long page,
                                int off,
                                int len,
                                java.io.DataInputStream din)
                         throws java.io.IOException

Throws:

java.io.IOException

synch

abstract void synch()
             throws java.io.IOException

Throws:

java.io.IOException

notifyPostRecover

abstract void notifyPostRecover()

getPageSize

public int getPageSize()

Returns the size of the page.

Specified by:

getPageSize in interface JournalledResource

getID

public long getID()

Returns the unique id of this page.

Specified by:

getID in interface JournalledResource

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object