org.vrspace.util
Class Message

java.lang.Object
  org.vrspace.util.Message

Direct Known Subclasses:

Request

public class Message

extends java.lang.Object

Generic Message class. A message can be request, response or command. Constructor expects request string in format "class id event value" or "command arguments"
Request: request for a network object to change it's state. Object is specified by class and id, event specifies it's field/method (metod has set_ prefix, used if there is no public field with event name) and value is passed to method or used to set field value
Response: response to a previous request/command. Prefixed with + (ok) or - (error).
Command: request to the server rather to an object

Field Summary

protected java.lang.String[]	arguments
protected java.lang.String	className
protected java.lang.String	eventName
protected java.lang.String	eventValue
java.lang.Exception	exception
protected boolean	isResponse
protected long	objectId
protected java.util.Vector	path
protected java.lang.String	request
protected boolean	response
protected long	time

Constructor Summary

protected	Message() Intended only for subclasses
	Message(java.lang.String line) Creates new message defined by line

Method Summary

java.lang.String[]	getArguments() Returns the command arguments
java.lang.String	getClassName() Returns the target object class name, or command if message is command
java.lang.String	getEventName() Returns target object field name
java.lang.String	getEventValue() Returns the event value
long	getId() Returns target object id or -1 if message is command
java.lang.String	getID() Returns className and id of targeted object.
java.lang.String[]	getPath() Returns the message path (list of servers it passed), null for local message
java.lang.String	getRequest() Returns the request string used to create this message
boolean	getResponse() returns true for ok or false for error
long	getTime() Returns the message creation time, in milliseconds
boolean	isResponse() Is this message a response
void	parseLine(java.lang.String line) parses line and fills in message fields
java.lang.String	toString() Returns the string representation of request, in the format expected by constructor

Methods inherited from class java.lang.Object

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

Field Detail

time

protected long time

className

protected java.lang.String className

objectId

protected long objectId

eventName

protected java.lang.String eventName

eventValue

protected java.lang.String eventValue

response

protected boolean response

isResponse

protected boolean isResponse

exception

public java.lang.Exception exception

arguments

protected java.lang.String[] arguments

path

protected java.util.Vector path

request

protected java.lang.String request

Constructor Detail

Message

protected Message()

Intended only for subclasses

Message

public Message(java.lang.String line)

Creates new message defined by line

Method Detail

parseLine

public void parseLine(java.lang.String line)

parses line and fills in message fields

isResponse

public boolean isResponse()

Is this message a response

getResponse

public boolean getResponse()

returns true for ok or false for error

getClassName

public java.lang.String getClassName()

Returns the target object class name, or command if message is command

getArguments

public java.lang.String[] getArguments()

Returns the command arguments

getId

public long getId()

Returns target object id or -1 if message is command

getID

public java.lang.String getID()

Returns className and id of targeted object.

getEventName

public java.lang.String getEventName()

Returns target object field name

getEventValue

public java.lang.String getEventValue()

Returns the event value

getTime

public long getTime()

Returns the message creation time, in milliseconds

getRequest

public java.lang.String getRequest()

Returns the request string used to create this message

getPath

public java.lang.String[] getPath()

Returns the message path (list of servers it passed), null for local message

toString

public java.lang.String toString()

Returns the string representation of request, in the format expected by constructor