Package org.apache.jackrabbit.core.persistence.util

Class FileBasedIndex

java.lang.Object

org.apache.jackrabbit.core.persistence.util.HashMapIndex

org.apache.jackrabbit.core.persistence.util.FileBasedIndex

All Implemented Interfaces:

StringIndex

public class FileBasedIndex
extends HashMapIndex

Implements a StringIndex that is based on a hashmap and persists the names as property file.

Field Summary

Fields inherited from class org.apache.jackrabbit.core.persistence.util.HashMapIndex

indexToString, stringToIndex

Constructor Summary

Constructors

Constructor	Description
FileBasedIndex(FileSystemResource file)	Creates a new hashmap index and loads the lookup tables from the filesystem resource.

Method Summary

Modifier and Type	Method	Description
protected void	load()	Loads the lookup table from the filesystem resource.
protected void	save()	Saves the lookup table to the filesystem resource.

Methods inherited from class org.apache.jackrabbit.core.persistence.util.HashMapIndex

indexToString, stringToIndex

Methods inherited from class java.lang.Object

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

Constructor Detail

FileBasedIndex

public FileBasedIndex(FileSystemResource file)
               throws FileSystemException,
                      IOException

Creates a new hashmap index and loads the lookup tables from the filesystem resource. If it does not exist yet, it will create a new one.

Parameters:

file - the filesystem resource that stores the lookup tables.

Throws:

IOException - if an I/O error occurs.

FileSystemException - if an I/O error occurs.

Method Detail

load

protected void load()

Loads the lookup table from the filesystem resource.

Overrides:

load in class HashMapIndex

save

protected void save()

Saves the lookup table to the filesystem resource.

Overrides:

save in class HashMapIndex