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org.vrspace.server
Class Dispatcher
java.lang.Objectorg.vrspace.server.Dispatcher
- Direct Known Subclasses:
- ProxyDispatcher
- public class Dispatcher
- extends java.lang.Object
Main class responsible for event dispatching. It's also a DBManager.
| Nested Class Summary | |
class |
Dispatcher.DaemonLoader
|
| Field Summary | |
protected java.util.HashSet |
clients
|
protected long |
daemonSessions
|
protected boolean |
initialized
|
protected long |
receivedBytes
|
protected long |
receivedChars
|
protected long |
receivedRequests
|
protected long |
sentBytes
|
protected long |
sentChars
|
protected long |
sentRequests
|
protected Server |
server
|
protected DB |
space
|
protected long |
startTime
|
| Constructor Summary | |
protected |
Dispatcher()
|
|
Dispatcher(Server s,
DB db)
Constructs new Dispatcher for Server s and database db |
| Method Summary | |
VRObject |
get(Client c,
java.lang.String className,
long id)
Fetch an object from the database. IMPORTANT: no protection mechanism, at least AuthInfo objects should not be retreived! |
(package private) AuthInfo |
getAuthInfo(Client c)
Retreives Authinfo for the client. |
VRObject |
getByName(Client c,
java.lang.String className,
java.lang.String name)
Fetch an object from the database having field name equal to name parameter IMPORTANT: no protection mechanism, at least AuthInfo objects should not be retreived! |
DB |
getDB(Client c)
Returns the reference to the database. |
java.lang.Object[] |
getRange(Client c,
java.lang.String className,
java.lang.String field,
java.lang.Object value)
Returns the object of className class having field == value |
java.lang.Object[] |
getRange(Client c,
VRObject o1,
VRObject o2)
Returns Object[] between o1 and o2 Class must have comparator() method to be searchable. |
Server |
getServer(Client c)
Returns server instance |
Transform |
getTransform(org.vrspace.attributes.HasTransform o)
Returns parent Transform of o |
protected void |
init()
Initialize dispatcher - loads permanent Transforms and starts daemons |
Client |
login(Session session,
java.lang.String login,
java.lang.String password,
boolean daemon)
Constructs a new client object. |
protected void |
logout(Client c,
Session s)
Logout Client c from Session s |
void |
put(Client c,
VRObject obj)
Store an object to the database. |
void |
putTransform(Client c,
Transform t)
Add a Transform from the database. |
void |
remove(Client c,
java.lang.String className,
long id)
Remove an object from the database. |
void |
remove(Client c,
VRObject obj)
Remove an object from the database. |
void |
removeTransform(Client c,
Transform t)
Remove a Transform from the database. |
void |
request(Request r)
Process request from the client. |
protected void |
shutdown()
Called from server upon shutdown |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
space
protected DB space
clients
protected java.util.HashSet clients
sentChars
protected long sentChars
receivedChars
protected long receivedChars
startTime
protected long startTime
sentRequests
protected long sentRequests
receivedRequests
protected long receivedRequests
sentBytes
protected long sentBytes
receivedBytes
protected long receivedBytes
daemonSessions
protected long daemonSessions
server
protected Server server
initialized
protected boolean initialized
| Constructor Detail |
Dispatcher
protected Dispatcher()
Dispatcher
public Dispatcher(Server s, DB db)
- Constructs new Dispatcher for Server s and database db
| Method Detail |
init
protected void init()
- Initialize dispatcher - loads permanent Transforms and starts daemons
getServer
public Server getServer(Client c)
- Returns server instance
getAuthInfo
AuthInfo getAuthInfo(Client c) throws java.lang.Exception
- Retreives Authinfo for the client. Intended for bots/daemons, available
only to classes withing this package.
get
public VRObject get(Client c, java.lang.String className, long id) throws java.lang.Exception
- Fetch an object from the database.
IMPORTANT: no protection mechanism, at least AuthInfo objects should not be retreived!
getByName
public VRObject getByName(Client c, java.lang.String className, java.lang.String name) throws java.lang.Exception
- Fetch an object from the database having field name equal to name parameter
IMPORTANT: no protection mechanism, at least AuthInfo objects should not be retreived!
put
public void put(Client c, VRObject obj) throws java.lang.Exception
- Store an object to the database.
IMPORTANT: no protection mechanism, at least AuthInfo objects should not be stored!
remove
public void remove(Client c, VRObject obj) throws java.lang.Exception
- Remove an object from the database.
IMPORTANT: no protection mechanism, at least AuthInfo objects should not be removed!
remove
public void remove(Client c, java.lang.String className, long id) throws java.lang.Exception
- Remove an object from the database.
IMPORTANT: no protection mechanism, at least AuthInfo objects should not be removed!
getTransform
public Transform getTransform(org.vrspace.attributes.HasTransform o) throws java.lang.Exception
- Returns parent Transform of o
removeTransform
public void removeTransform(Client c, Transform t) throws java.lang.Exception
- Remove a Transform from the database. Removes it's children too - use
remove( Client, VRObject ) or remove( Client, String, long ) to leave
it's children intact.
IMPORTANT: no protection mechanism!
putTransform
public void putTransform(Client c, Transform t) throws java.lang.Exception
- Add a Transform from the database.
IMPORTANT: no protection mechanism!
getRange
public java.lang.Object[] getRange(Client c, VRObject o1, VRObject o2) throws java.lang.Exception
- Returns Object[] between o1 and o2
Class must have comparator() method to be searchable.
getRange
public java.lang.Object[] getRange(Client c, java.lang.String className, java.lang.String field, java.lang.Object value) throws java.lang.Exception
- Returns the object of className class having field == value
getDB
public DB getDB(Client c)
- Returns the reference to the database. Only Admin client can get reference to the database.
request
public void request(Request r) throws RequestException
- Process request from the client.
Find an object, check whether client can set a variable's value.
If so, set it, notify observers, update the database.
If request is a command, constructs new command instance and calls exec( request )
Package search order:
"org.vrspace.command."+client class name+"."+command
"org.vrspace.command."+command
login
public Client login(Session session, java.lang.String login, java.lang.String password, boolean daemon) throws java.lang.Exception
- Constructs a new client object.
This should look up the database, and construct new client of some
class (User, Robot...)
Sets Client's fields (session, authinfo, db, dispatcher, scene ).
If client has transform field different than null, also looks up
for appropriate Transform, and if found, calls scene.update( Transform ),
and sets this client for Transform's owner.
logout
protected void logout(Client c, Session s)
- Logout Client c from Session s
shutdown
protected void shutdown()
- Called from server upon shutdown
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SUMMARY: JAVADOC | SOURCE | DOWNLOAD | NESTED | FIELD | CONSTR | METHOD |
DETAIL: FIELD | CONSTR | METHOD | ||||||||