org.apache.avalon.cornerstone.blocks.masterstore.xml
Class XMLFilePersistentObjectRepository

java.lang.Object
  org.apache.avalon.framework.logger.AbstractLogEnabled
      org.apache.avalon.cornerstone.blocks.masterstore.AbstractFileRepository
          org.apache.avalon.cornerstone.blocks.masterstore.xml.XMLFilePersistentObjectRepository

All Implemented Interfaces:

Configurable, Contextualizable, Initializable, LogEnabled, ObjectRepository, Repository, Serviceable

public class XMLFilePersistentObjectRepository

extends AbstractFileRepository

implements ObjectRepository

This is a simple implementation of persistent object store using XML serialization from JDK 1.4 to a file system. This implementation of ObjectRepository comes with the following warning: "XMLEncoder provides suitable persistence delegates for all public subclasses of java.awt.Component in J2SE and the types of all of their properties, recursively. All other classes will be handled with the default persistence delegate which assumes the class follows the beans conventions" (snipped from the BugParade) Basically, don't use this block for anything other than Swing component serialization. Sun will have to do a lot of work writing a "PersistenceDelegate" to handle other JDK types let alone custom classes.

Author:

Paul Hammant, Stefano Mazzocchi, Federico Barbieri

Field Summary

Fields inherited from class org.apache.avalon.cornerstone.blocks.masterstore.AbstractFileRepository

BYTE_MASK, DEBUG, HANDLED_URL, HEX_DIGITS, m_baseDirectory, m_destination, m_extension, m_filter, m_name, m_path, m_serviceManager

Constructor Summary

XMLFilePersistentObjectRepository()

Method Summary

Object	get(String key) Get the object associated to the given unique key.
Object	get(String key, ClassLoader classLoader)
protected String	getExtensionDecorator()
void	put(String key, Object value) Store the given object and associates it to the given key

Methods inherited from class org.apache.avalon.cornerstone.blocks.masterstore.AbstractFileRepository

configure, containsKey, contextualize, createChildRepository, decode, encode, getChildRepository, getFile, getInputStream, getOutputStream, initialize, list, remove, service, setDestination

Methods inherited from class org.apache.avalon.framework.logger.AbstractLogEnabled

enableLogging, getLogger, setupLogger, setupLogger, setupLogger

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.avalon.cornerstone.services.store.ObjectRepository

containsKey, list, remove

Methods inherited from interface org.apache.avalon.cornerstone.services.store.Repository

getChildRepository

Constructor Detail

XMLFilePersistentObjectRepository

public XMLFilePersistentObjectRepository()

Method Detail

getExtensionDecorator

protected String getExtensionDecorator()

Specified by:

getExtensionDecorator in class AbstractFileRepository

get

public Object get(String key)

Get the object associated to the given unique key.

Specified by:

get in interface ObjectRepository

get

public Object get(String key,
                  ClassLoader classLoader)

Specified by:

get in interface ObjectRepository

put

public void put(String key,
                Object value)

Store the given object and associates it to the given key

Specified by:

put in interface ObjectRepository