Package com.db4o.io

Class FileStorage

java.lang.Object

com.db4o.io.FileStorage

All Implemented Interfaces:

Storage

public class FileStorage
extends java.lang.Object
implements Storage

Storage adapter to store db4o database data to physical files on hard disc.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	FileStorage.FileBin

Constructor Summary

Constructors

Constructor	Description
FileStorage()

Method Summary

Modifier and Type	Method	Description
void	delete(java.lang.String uri)	Deletes the bin for the given URI from the storage.
boolean	exists(java.lang.String uri)	returns true if the specified file system path already exists.
Bin	open(BinConfiguration config)	opens a Bin on the specified URI (file system path).
void	rename(java.lang.String oldUri, java.lang.String newUri)	Renames the bin for the given old URI to the new URI.

Methods inherited from class java.lang.Object

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

Constructor Detail

FileStorage

public FileStorage()

Method Detail

open

public Bin open(BinConfiguration config)
         throws Db4oIOException

opens a Bin on the specified URI (file system path).

Specified by:

open in interface Storage

Throws:

Db4oIOException

exists

public boolean exists(java.lang.String uri)

returns true if the specified file system path already exists.

Specified by:

exists in interface Storage

delete

public void delete(java.lang.String uri)
            throws java.io.IOException

Description copied from interface: Storage

Deletes the bin for the given URI from the storage.

Specified by:

delete in interface Storage

Parameters:

uri - bin URI

Throws:

java.io.IOException - if the bin could not be deleted

rename

public void rename(java.lang.String oldUri,
                   java.lang.String newUri)
            throws java.io.IOException

Description copied from interface: Storage

Renames the bin for the given old URI to the new URI. If a bin for the new URI exists, it will be overwritten.

Specified by:

rename in interface Storage

Parameters:

oldUri - URI of the existing bin

newUri - future URI of the bin

Throws:

java.io.IOException - if the bin could not be deleted