WebLogic Server 6.1 API Reference

weblogic.workspace.common
Interface WorkspaceDef

public interface WorkspaceDef

Interface for Workspace objects. A Workspace object provides stateful context for each client of a WebLogic Server. Workspaces can persist after clients are disconnected.

Here's an example of how this interface is used:

   T3Client t3 = new T3Client(host); 
   t3.connect();
 
   // Request a Workspace object called "MY_SPACE"
   WorkspaceDef ws = t3.services.workspace().getWorkspace("MY_SPACE");

   // Store a value, FIDO, under the name "DOG"
   ws.store("DOG", "FIDO");
   String dogName = (String) ws.fetch("DOG");
   ws.store("CAT", "MORRIS");

Author:

Copyright (c) 1996-1998, WebLogic, Inc., Copyright (c) 1999 by BEA WebXpress. All Rights Reserved.
Copyright © 2001 BEA Systems, Inc. All Rights Reserved.

See Also:

T3ServicesDef, WorkspaceServicesDef

Field Summary

static int	ATTACH Constant for use when attaching to an existing Workspace.
static int	CREATE Constant for use when creating a new Workspace.
static java.lang.String	name_separator Internal use only.
static int	OPEN Constant for use when creating a new Workspace, or attaching to an existing one, if a matching one exists.
static java.lang.String	primordial_name Internal use only.
static int	SCOPE_CLIENT Constant that indicates the scope for a client workspace.
static int	SCOPE_CLUSTER Constant that indicates the scope of a cluster workspace.
static int	SCOPE_GROUP Constant that indicates the scope for a group workspace.
static int	SCOPE_SERVER Constant that indicates the scope for a server workspace.

Method Summary

void	addMonitor(Monitor monitor) Adds a Monitor to a Workspace.
void	addMonitor(java.lang.String key, Monitor monitor) Adds a Monitor to a Workspace value.
void	destroy() Destroys a Workspace.
java.lang.Object	fetch(java.lang.String key) Fetches an Object by the specified key from the Workspace but does not remove it from the Workspace.
java.lang.String	getID() Retrieves a fully-qualified Workspace identifier.
java.lang.String	getName() Retrieves the name of the Workspace.
WorkspaceDef	getWorkspace(java.lang.String name) Gets a Workspace object that is a child of this Workspace.
WorkspaceDef	getWorkspace(java.lang.String name, int mode) Returns a Workspace object that is a child of this Workspace.
WorkspaceDef	getWorkspace(java.lang.String name, int mode, int scope) Returns the workspace object, if it exists, as a child of the scoped workspace.
java.util.Enumeration	keys() Returns an Enumeration of all the keys of a Workspace.
java.lang.Object	remove(java.lang.String key) Returns an Object by the specified key from the named Workspace and removes it from the Workspace.
void	removeMonitor(Monitor monitor) Removes a Monitor from a workspace.
void	removeMonitor(java.lang.String key, Monitor monitor) Removes a Monitor from a Workspace value.
void	store(java.lang.String key, java.lang.Object p) Stores the specified Object with the specified key in the Workspace.
java.util.Enumeration	subspaces() Returns an Enumeration of all the subspace names of this Workspace.

Field Detail

ATTACH

public static final int ATTACH

Constant for use when attaching to an existing Workspace. Attempting to attach to an existing Workspace that does not exist will cause an Exception.

CREATE

public static final int CREATE

Constant for use when creating a new Workspace. Attempting to create a Workspace that already exists will cause an Exception.

OPEN

public static final int OPEN

Constant for use when creating a new Workspace, or attaching to an existing one, if a matching one exists.

SCOPE_CLIENT

public static final int SCOPE_CLIENT

Constant that indicates the scope for a client workspace.

SCOPE_GROUP

public static final int SCOPE_GROUP

Constant that indicates the scope for a group workspace.

SCOPE_SERVER

public static final int SCOPE_SERVER

Constant that indicates the scope for a server workspace.

SCOPE_CLUSTER

public static final int SCOPE_CLUSTER

Constant that indicates the scope of a cluster workspace.

name_separator

public static final java.lang.String name_separator

Internal use only.

primordial_name

public static final java.lang.String primordial_name

Internal use only.

Method Detail

store

public void store(java.lang.String key,
                  java.lang.Object p)
           throws T3Exception

Stores the specified Object with the specified key in the Workspace.

Parameters:

key - Key by which the Object can be retrieved

p - Object to be stored

Throws:

T3Exception - if there is an error

fetch

public java.lang.Object fetch(java.lang.String key)
                       throws T3Exception

Fetches an Object by the specified key from the Workspace but does not remove it from the Workspace.

Parameters:

key - Key of the Object to fetch

Returns:

Object to be fetched

Throws:

T3Exception - if there is an error

remove

public java.lang.Object remove(java.lang.String key)
                        throws T3Exception

Returns an Object by the specified key from the named Workspace and removes it from the Workspace.

Parameters:

key - Key of object to remove

Returns:

Object to be removed

Throws:

T3Exception - if there is an error

keys

public java.util.Enumeration keys()
                           throws T3Exception

Returns an Enumeration of all the keys of a Workspace. The keys are those from the immediate Workspace, not of any parent Workspaces.

Returns:

Enumeration

Throws:

T3Exception - if there is an error

subspaces

public java.util.Enumeration subspaces()
                                throws T3Exception

Returns an Enumeration of all the subspace names of this Workspace.

Returns:

Enumeration

Throws:

T3Exception - if there is an error

destroy

public void destroy()
             throws T3Exception

Destroys a Workspace. Destroying a Workspace will recursively destroy all of its child Workspaces.

Throws:

T3Exception - if there is an error

getWorkspace

public WorkspaceDef getWorkspace(java.lang.String name)
                          throws T3Exception

Gets a Workspace object that is a child of this Workspace. By default, the mode is OPEN, meaning that the Workspace is created if it does not already exist.

Parameters:

name - Name of the Workspace

Returns:

WorkspaceDef that is a child of this Workspace

Throws:

T3Exception - if there is an error

getWorkspace

public WorkspaceDef getWorkspace(java.lang.String name,
                                 int mode)
                          throws T3Exception

Returns a Workspace object that is a child of this Workspace. Returns null if it does not exist. Modes for the workspace are defined in weblogic.workspace.common.WorkspaceDef:

CREATE

The Workspace is created and returned, and must not already exist. If it exists, calling this method will cause a T3Exception to be thrown.

ATTACH

The Workspace returned must already exist. If the Workspace does not exist, calling this method will cause a T3Exception to be thrown.

OPEN

An existing Workspace is returned, or created if the Workspace does not exist.

Parameters:

name - Name of the Workspace

mode - CREATE, ATTACH, OPEN

Returns:

WorkspaceDef of the Workspace

Throws:

T3Exception - if there is an error

getWorkspace

public WorkspaceDef getWorkspace(java.lang.String name,
                                 int mode,
                                 int scope)
                          throws T3Exception

Returns the workspace object, if it exists, as a child of the scoped workspace. Returns null if it does not exist. Modes for the workspace are defined in weblogic.workspace.common.WorkspaceDef:

CREATE

The Workspace is created and returned, and must not already exist. If it exists, calling this method will cause a T3Exception to be thrown.

ATTACH

The Workspace returned must already exist. If the Workspace does not exist, calling this method will cause a T3Exception to be thrown.

OPEN

An existing Workspace is returned, or created if the Workspace does not exist.

The scope may be any of the constants in this class:

• SCOPE_CLIENT
• SCOPE_GROUP
• SCOPE_SERVER
• SCOPE_CLUSTER

Parameters:

name - Name of the workspace

mode - CREATE, ATTACH, OPEN

scope - final static ints defined in this class

Returns:

WorkspaceDef

Throws:

T3Exception - if the operation fails

getID

public java.lang.String getID()

Retrieves a fully-qualified Workspace identifier. The identifier is globally unique.

Returns:

Fully-qualified ID

getName

public java.lang.String getName()

Retrieves the name of the Workspace. The Workspace name is assigned by the creator of the Workspace. A named Workspace is created as a user-named subWorkspace of the general Workspace created for each client by the system.

Returns:

Workspace name

addMonitor

public void addMonitor(java.lang.String key,
                       Monitor monitor)
                throws T3Exception

Adds a Monitor to a Workspace value. Workspace values support GetMonitors, SetMonitors, and DestroyMonitors.

Parameters:

key - Key by which a Monitor can be identified

monitor - Monitor for operating on Workspace values

Throws:

T3Exception - if there is an error

removeMonitor

public void removeMonitor(java.lang.String key,
                          Monitor monitor)
                   throws T3Exception

Removes a Monitor from a Workspace value.

Parameters:

key - Key by which a Monitor can be identified

monitor - Monitor for operating on Workspace values

Throws:

T3Exception - if there is an error

addMonitor

public void addMonitor(Monitor monitor)
                throws T3Exception

Adds a Monitor to a Workspace. Workspaces only support DestroyMonitors (current with release 3.0).

Parameters:

monitor - Monitor for operating on Workspace values

Throws:

T3Exception - if there is an error

removeMonitor

public void removeMonitor(Monitor monitor)
                   throws T3Exception

Removes a Monitor from a workspace.

Parameters:

monitor - Monitor for operating on Workspace values

Throws:

T3Exception - if there is an error