oracle.xml.scalable

Class FilePageManager

java.lang.Object

oracle.xml.scalable.AbstractPageManager

oracle.xml.scalable.FilePageManager

All Implemented Interfaces:

PageManager

public class FilePageManager
extends oracle.xml.scalable.AbstractPageManager

A PageManger that stores pages in a file.

Constructor Summary

Constructors

Constructor and Description
FilePageManager(java.lang.String filename) Creates a FilePageManager.

Method Summary

Modifier and Type	Method and Description
void	close() Closes the session.
void	deletePage(PageManager.PageId id) Delete the page for the given page id.
int	read(byte[] buf, int off, int len) Read from the given offset into the buffer
void	seek(long offset) Seek to the given offset
void	write(byte[] buf, int off, int len) Write at the given offset from the buffer

Methods inherited from class java.lang.Object

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

Constructor Detail

FilePageManager

public FilePageManager(java.lang.String filename)

Creates a FilePageManager.

Parameters:

filename - - the system-dependent filename

Method Detail

seek

public void seek(long offset)
          throws java.io.IOException

Seek to the given offset

Throws:

java.io.IOException

read

public int read(byte[] buf,
                int off,
                int len)
         throws java.io.IOException

Read from the given offset into the buffer

Parameters:

buf - - result buffer

off - - offset to start reading from

len - - number of bytes to read

Returns:

- number of bytes read

Throws:

java.io.IOException

write

public void write(byte[] buf,
                  int off,
                  int len)
           throws java.io.IOException

Write at the given offset from the buffer

Parameters:

buf - - input buffer

off - - offset to start writing from

len - - number of bytes to write

Throws:

java.io.IOException

deletePage

public void deletePage(PageManager.PageId id)

Delete the page for the given page id.

Specified by:

deletePage in interface PageManager

Parameters:

id - - an Object containing the page Id.

close

public void close()

Closes the session.

Specified by:

close in interface PageManager