Class FileStore

java.lang.Object

org.apache.catalina.util.LifecycleBase

org.apache.catalina.session.StoreBase

org.apache.catalina.session.FileStore

All Implemented Interfaces:

Lifecycle, Store

public final class FileStore
extends StoreBase

Concrete implementation of the Store interface that utilizes a file per saved Session in a configured directory. Sessions that are saved are still subject to being expired based on inactivity.

Nested Class Summary

Nested classes/interfaces inherited from interface Lifecycle

Lifecycle.SingleUse

Field Summary

Fields inherited from class StoreBase

manager, support

Fields inherited from interface Lifecycle

AFTER_DESTROY_EVENT, AFTER_INIT_EVENT, AFTER_START_EVENT, AFTER_STOP_EVENT, BEFORE_DESTROY_EVENT, BEFORE_INIT_EVENT, BEFORE_START_EVENT, BEFORE_STOP_EVENT, CONFIGURE_START_EVENT, CONFIGURE_STOP_EVENT, PERIODIC_EVENT, START_EVENT, STOP_EVENT

Constructor Summary

Constructors

Constructor	Description
FileStore()	Default constructor for FileStore.

Method Summary

Modifier and Type	Method	Description
void	clear()	Remove all Sessions from this Store.
String	getDirectory()	Returns the directory path where session files are stored.
int	getSize()	Return the number of Sessions present in this Store.
String	getStoreName()	Return the name for this Store, used for logging.
String	getThreadName()	Returns the name used for the background thread that processes this store.
String[]	keys()	Return an array containing the session identifiers of all Sessions currently saved in this Store.
Session	load(String id)	Load and return the Session associated with the specified session identifier from this Store, without removing it.
void	remove(String id)	Remove the Session with the specified session identifier from this Store, if present.
void	save(Session session)	Save the specified Session into this Store.
void	setDirectory(String path)	Set the directory path for this Store.

Methods inherited from class StoreBase

addPropertyChangeListener, destroyInternal, expiredKeys, getManager, getObjectInputStream, initInternal, processExpires, removePropertyChangeListener, setManager, startInternal, stopInternal, toString

Methods inherited from class LifecycleBase

addLifecycleListener, destroy, findLifecycleListeners, fireLifecycleEvent, getState, getStateName, getThrowOnFailure, init, removeLifecycleListener, setState, setState, setThrowOnFailure, start, stop

Methods inherited from class Object

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

Constructor Details

FileStore

public FileStore()

Default constructor for FileStore.

Method Details

getDirectory

public String getDirectory()

Returns the directory path where session files are stored.

Returns:

The directory path for this Store

setDirectory

public void setDirectory(String path)

Set the directory path for this Store.

Parameters:

path - The new directory path

getThreadName

public String getThreadName()

Returns the name used for the background thread that processes this store.

Returns:

The thread name for this Store

getStoreName

public String getStoreName()

Description copied from class: StoreBase

Return the name for this Store, used for logging.

Overrides:

getStoreName in class StoreBase

Returns:

the store name

getSize

public int getSize()
            throws IOException

Description copied from interface: Store

Return the number of Sessions present in this Store.

Returns:

the number of Sessions

Throws:

IOException - if an input/output error occurs

clear

public void clear()
           throws IOException

Description copied from interface: Store

Remove all Sessions from this Store.

Throws:

IOException - if an input/output error occurs

keys

public String[] keys()
              throws IOException

Description copied from interface: Store

Return an array containing the session identifiers of all Sessions currently saved in this Store. If there are no such Sessions, a zero-length array is returned.

Returns:

the session identifiers

Throws:

IOException - if an input/output error occurred

load

public Session load(String id)
             throws ClassNotFoundException,
IOException

Description copied from interface: Store

Load and return the Session associated with the specified session identifier from this Store, without removing it. If there is no such stored Session, return null.

Implementations should expect, and correctly handle, concurrent calls to any method but in particular calls to #load(String), #save(Session) and #remove(String) for the same session.

The session ID is user provided so stores must treat it as untrusted data.

Parameters:

id - Session identifier of the session to load

Returns:

the loaded Session instance

Throws:

ClassNotFoundException - if a deserialization error occurs

IOException - if an input/output error occurs

remove

public void remove(String id)
            throws IOException

Description copied from interface: Store

Remove the Session with the specified session identifier from this Store, if present. If no such Session is present, this method takes no action.

Implementations should expect, and correctly handle, concurrent calls to any method but in particular calls to #load(String), #save(Session) and #remove(String) for the same session.

The session ID is user provided so stores must treat it as untrusted data.

Parameters:

id - Session identifier of the Session to be removed

Throws:

IOException - if an input/output error occurs

save

public void save(Session session)
          throws IOException

Description copied from interface: Store

Save the specified Session into this Store. Any previously saved information for the associated session identifier is replaced.

Implementations should expect, and correctly handle, concurrent calls to any method but in particular calls to #load(String), #save(Session) and #remove(String) for the same session.

Parameters:

session - Session to be saved

Throws:

IOException - if an input/output error occurs