net.aerith.misao.io
Class XmlDBHolderCache

java.lang.Object
  |
  +--net.aerith.misao.io.XmlDBHolderCache

public class XmlDBHolderCache

extends java.lang.Object

The XmlDBHolderCache represents a disk cache to read and write XML files in the database.

Field Summary

protected static boolean	enable_cache True if the disk cache is enabled.
protected static CacheEntry[]	entries The entries.
protected static int	file_count The number of XML files in cache.
protected static int	update_limit The limit to update without saving to a file.

Constructor Summary

XmlDBHolderCache()

Method Summary

static void	enable(boolean flag) Enables/disables the disk cache.
static void	flush() Saves the XML documents into files.
static XmlDBHolder	read(java.io.File file, XmlDBHolder holder_class) Reads the XML document.
static void	write(java.io.File file, XmlDBHolder holder) Writes the XML document.

Methods inherited from class java.lang.Object

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

Field Detail

file_count

protected static final int file_count

The number of XML files in cache.

update_limit

protected static int update_limit

The limit to update without saving to a file.

entries

protected static CacheEntry[] entries

The entries.

enable_cache

protected static boolean enable_cache

True if the disk cache is enabled.

Constructor Detail

XmlDBHolderCache

public XmlDBHolderCache()

Method Detail

enable

public static void enable(boolean flag)
                   throws java.io.IOException

Enables/disables the disk cache.

Parameters:

flag - true when to enable the disk cache.

Throws:

java.io.IOException - if I/O error occurs.

read

public static XmlDBHolder read(java.io.File file,
                               XmlDBHolder holder_class)
                        throws java.io.IOException

Reads the XML document.

Parameters:

file - the file.

holder_class - the holder class object of the XML records.

Returns:

the holder.

Throws:

java.io.IOException - if I/O error occurs.

write

public static void write(java.io.File file,
                         XmlDBHolder holder)
                  throws java.io.IOException

Writes the XML document.

Parameters:

file - the file.

holder - the holder.

Throws:

java.io.IOException - if I/O error occurs.

flush

public static void flush()
                  throws java.io.IOException

Saves the XML documents into files.

Throws:

java.io.IOException - if I/O error occurs.