org.apache.struts.apps.mailreader.dao.impl.memory
Class MemoryUserDatabase

java.lang.Object
  org.apache.struts.apps.mailreader.dao.impl.memory.MemoryUserDatabase

All Implemented Interfaces:

UserDatabase

public class MemoryUserDatabase
extends Object
implements UserDatabase

Concrete implementation of UserDatabase for an in-memory database backed by an XML data file.

Since:

Struts 1.1

Version:

$Rev: 471754 $ $Date: 2006-11-06 08:55:09 -0600 (Mon, 06 Nov 2006) $

Constructor Summary

MemoryUserDatabase()

Method Summary

void	close() Finalize access to the underlying persistence layer.
User	createUser(String username) Create and return a new User defined in this user database.
User	findUser(String username) Return the existing User with the specified username, if any; otherwise return null.
User[]	findUsers() Return the set of Users defined in this user database.
String	getPathname()
boolean	isOpen() Return true if open() has been called.
void	open() Initiate access to the underlying persistence layer.
void	removeUser(User user) Remove the specified User from this database.
void	save() Save any pending changes to the underlying persistence layer.
void	setPathname(String pathname)

Methods inherited from class java.lang.Object

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

Constructor Detail

MemoryUserDatabase

public MemoryUserDatabase()

Method Detail

getPathname

public String getPathname()

setPathname

public void setPathname(String pathname)

close

public void close()
           throws Exception

Description copied from interface: UserDatabase

Finalize access to the underlying persistence layer.

Specified by:

close in interface UserDatabase

Throws:

Exception - if a database access error occurs

createUser

public User createUser(String username)

Description copied from interface: UserDatabase

Create and return a new User defined in this user database.

Specified by:

createUser in interface UserDatabase

Parameters:

username - Username of the new user

findUser

public User findUser(String username)

Description copied from interface: UserDatabase

Return the existing User with the specified username, if any; otherwise return null.

Specified by:

findUser in interface UserDatabase

Parameters:

username - Username of the user to retrieve

findUsers

public User[] findUsers()

Description copied from interface: UserDatabase

Return the set of Users defined in this user database.

Specified by:

findUsers in interface UserDatabase

open

public void open()
          throws Exception

Description copied from interface: UserDatabase

Initiate access to the underlying persistence layer.

Specified by:

open in interface UserDatabase

Throws:

Exception - if a database access error occurs

removeUser

public void removeUser(User user)

Description copied from interface: UserDatabase

Remove the specified User from this database.

Specified by:

removeUser in interface UserDatabase

Parameters:

user - User to be removed

save

public void save()
          throws Exception

Description copied from interface: UserDatabase

Save any pending changes to the underlying persistence layer.

Specified by:

save in interface UserDatabase

Throws:

Exception - if a database access error occurs

isOpen

public boolean isOpen()

Description copied from interface: UserDatabase

Return true if open() has been called.

Specified by:

isOpen in interface UserDatabase