org.objectweb.fractal.gui.repository.lib
Class XMLFileStorage

java.lang.Object
  org.objectweb.fractal.gui.repository.lib.XMLFileStorage

All Implemented Interfaces:

Storage

public class XMLFileStorage

extends java.lang.Object

implements Storage

Basic implementation of Storage interface, based on a single XML file. More precsiely, each storage is a single XML file, and each (name, value) pair is represented by an XML element of these files (the name is given by the 'name' attribute of an XML element).

Constructor Summary

XMLFileStorage()

Method Summary

void	close() Closes the currently opened storage.
java.lang.Object	load(java.lang.String name) Loads the object whose name is given, from the currently opened storage.
void	open(java.lang.String storage) Opens the storage whose name is given.
void	store(java.lang.String name, java.lang.Object value) Stores the given object under the given name in the currently opened storage.

Methods inherited from class java.lang.Object

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

Constructor Detail

XMLFileStorage

public XMLFileStorage()

Method Detail

open

public void open(java.lang.String storage)
          throws java.lang.Exception

Description copied from interface: Storage

Opens the storage whose name is given.

Specified by:

open in interface Storage

Parameters:

storage - name of the storage to be opened

Throws:

java.lang.Exception - if the storage cannot be opened.

load

public java.lang.Object load(java.lang.String name)
                      throws java.lang.Exception

Description copied from interface: Storage

Loads the object whose name is given, from the currently opened storage.

Specified by:

load in interface Storage

Parameters:

name - the name of the object to be loaded.

Returns:

the object whose name is given.

Throws:

java.lang.Exception - if the given object cannot be loaded.

store

public void store(java.lang.String name,
                  java.lang.Object value)
           throws java.lang.Exception

Description copied from interface: Storage

Stores the given object under the given name in the currently opened storage.

Specified by:

store in interface Storage

Parameters:

name - the name of the object to be stored.

value - the value of the object to be stored.

Throws:

java.lang.Exception - if the object cannot be stored.

close

public void close()
           throws java.lang.Exception

Description copied from interface: Storage

Closes the currently opened storage.

Specified by:

close in interface Storage

Throws:

java.lang.Exception - if the currently opened storage cannot be closed.