com.db4o.io

Class SaveAsStorage

java.lang.Object

com.db4o.io.StorageDecorator

com.db4o.io.SaveAsStorage

All Implemented Interfaces:

Storage

public class SaveAsStorage
extends StorageDecorator

Storage that allows to save an open database file as another file while keeping the reference system in place. If anything goes wrong during copying the storage tries to reopen the original file, so commit operations can still take place against the original file.

Field Summary

Fields inherited from class com.db4o.io.StorageDecorator

_storage

Constructor Summary

Constructors

Constructor and Description
SaveAsStorage(Storage storage)

Method Summary

Methods

Modifier and Type	Method and Description
Bin	open(BinConfiguration config)
void	saveAs(java.lang.String oldUri, java.lang.String newUri) call this method to save the content of a currently open ObjectContainer session to a new file location.

Methods inherited from class com.db4o.io.StorageDecorator

decorate, delete, exists, rename

Methods inherited from class java.lang.Object

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

Constructor Detail

SaveAsStorage

public SaveAsStorage(Storage storage)

Method Detail

saveAs

public void saveAs(java.lang.String oldUri,
          java.lang.String newUri)

call this method to save the content of a currently open ObjectContainer session to a new file location. Invocation will close the old file without a commit, keep the reference system in place and connect it to the file in the new location. If anything goes wrong during the copying operation or while opening it will be attempted to reopen the old file. In this case a Db4oException will be thrown.

Parameters:

oldUri - the path to the old open database file

newUri - the path to the new database file

open

public Bin open(BinConfiguration config)
         throws Db4oIOException

Specified by:

open in interface Storage

Overrides:

open in class StorageDecorator

Throws:

Db4oIOException