org.red5.server.persistence

Class RamPersistence

java.lang.Object

org.red5.server.persistence.RamPersistence

All Implemented Interfaces:

IPersistenceStore

public class RamPersistence
extends Object
implements IPersistenceStore

Persistence implementation that stores the objects in memory. This serves as default persistence if nothing has been configured.

Author:

The Red5 Project, Joachim Bauch (jojo@struktur.de), Michael Klishin (michael@novemberain.com)

Field Summary

Fields

Modifier and Type	Field and Description
protected ConcurrentMap<String,IPersistable>	objects Map for persistable objects
protected static String	PERSISTENCE_NO_NAME This is used in the id for objects that have a name of
protected ResourcePatternResolver	resources Resource pattern resolver.

Constructor Summary

Constructors

Constructor and Description
RamPersistence(IScope scope) Creates RAM persistence object from scope
RamPersistence(ResourcePatternResolver resources) Creates RAM persistence object from resource pattern resolvers

Method Summary

Modifier and Type	Method and Description
protected String	getObjectId(IPersistable object) Get object id
protected String	getObjectName(String id) Get resource name from path.
Set<String>	getObjectNames() Return iterator over the names of all already loaded objects in the storage.
protected String	getObjectPath(String id, String name) Get object path for given id and name.
Collection<IPersistable>	getObjects() Return iterator over the already loaded objects in the storage.
boolean	load(IPersistable obj) Load state of an already instantiated persistent object.
IPersistable	load(String name) Load a persistent object with the given name.
void	notifyClose() Notify store that it's being closed.
boolean	remove(IPersistable object) Delete the passed persistent object.
boolean	remove(String name) Delete the persistent object with the given name.
boolean	save(IPersistable object) Persist given object.

Methods inherited from class java.lang.Object

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

Field Detail

PERSISTENCE_NO_NAME

protected static final String PERSISTENCE_NO_NAME

This is used in the id for objects that have a name of

 null
 

See Also:

Constant Field Values

objects

protected ConcurrentMap<String,IPersistable> objects

Map for persistable objects

resources

protected ResourcePatternResolver resources

Resource pattern resolver. Resolves resources from patterns, loads resources.

Constructor Detail

RamPersistence

public RamPersistence(ResourcePatternResolver resources)

Creates RAM persistence object from resource pattern resolvers

Parameters:

resources - Resource pattern resolver and loader

RamPersistence

public RamPersistence(IScope scope)

Creates RAM persistence object from scope

Parameters:

scope - Scope

Method Detail

getObjectName

protected String getObjectName(String id)

Get resource name from path. The format of the object id is

 type / path / objectName
 

Parameters:

id - object id

Returns:

resource name

getObjectPath

protected String getObjectPath(String id,
                               String name)

Get object path for given id and name. The format of the object id is

 type / path / objectName
 

Parameters:

id - object id

name - object name

Returns:

resource path

getObjectId

protected String getObjectId(IPersistable object)

Get object id

Parameters:

object - Persistable object whose id is asked for

Returns:

Given persistable object id

save

public boolean save(IPersistable object)

Persist given object.

Specified by:

save in interface IPersistenceStore

Parameters:

object - Object to store

Returns:

 true
 

on success,

 false
 

otherwise

load

public IPersistable load(String name)

Load a persistent object with the given name. The object must provide either a constructor that takes an input stream as only parameter or an empty constructor so it can be loaded from the persistence store.

Specified by:

load in interface IPersistenceStore

Parameters:

name - the name of the object to load

Returns:

The loaded object or

 null
 

if no such object was found

load

public boolean load(IPersistable obj)

Load state of an already instantiated persistent object.

Specified by:

load in interface IPersistenceStore

Parameters:

obj - the object to initializ

Returns:

true if the object was initialized, false otherwise

remove

public boolean remove(IPersistable object)

Delete the passed persistent object.

Specified by:

remove in interface IPersistenceStore

Parameters:

object - the object to delete

Returns:

 true
 

if object was persisted and thus can be removed,

 false
 

otherwise

remove

public boolean remove(String name)

Delete the persistent object with the given name.

Specified by:

remove in interface IPersistenceStore

Parameters:

name - the name of the object to delete

Returns:

 true
 

if object was persisted and thus can be removed,

 false
 

otherwise

getObjectNames

public Set<String> getObjectNames()

Return iterator over the names of all already loaded objects in the storage.

Specified by:

getObjectNames in interface IPersistenceStore

Returns:

Set of all object names

getObjects

public Collection<IPersistable> getObjects()

Return iterator over the already loaded objects in the storage.

Specified by:

getObjects in interface IPersistenceStore

Returns:

Set of all objects

notifyClose

public void notifyClose()

Notify store that it's being closed. This allows the store to write any pending objects to disk.

Specified by:

notifyClose in interface IPersistenceStore