com.ergotech.vib.servers

Class MarqueeDeviceServer

java.lang.Object

com.ergotech.vib.servers.MarqueeDeviceServer

public class MarqueeDeviceServer
extends java.lang.Object

This object is designed to work with the MarqueeServer. This object will store the current value for each MarqueeServer, and make all changes to the string. This is intended to be an example of how data sources use a device server. a real example of a device server might be a class that controls the reading and writing to a single serial port. The device server for the serial port ensures that only one data source at a time has access to the port (via the serial port device server).
Please read the documentation for MarqueeServer for a complete design description. The MarqueeDeviceServer will store a string for every MarqueeServer instance. Every time the server asks for a value, this DeviceServer will rotate the string then return it.

See Also:

MarqueeServer

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	cvsRev

Constructor Summary

Constructors

Constructor and Description
MarqueeDeviceServer()

Method Summary

Modifier and Type	Method and Description
java.lang.String	getStringValue(DataSource theServer) This method will find the string associated with a dataSource, rotate it one character and return the value.
void	registerString(java.lang.String newValue, DataSource newServer) This method is called by a MarqueeServer to initially store the string.
boolean	serverAttached(DataSource aServer) Return true if the server has been attached to a MarqueeServer already.

Methods inherited from class java.lang.Object

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

Field Detail

cvsRev

public static final java.lang.String cvsRev

See Also:

Constant Field Values

Constructor Detail

MarqueeDeviceServer

public MarqueeDeviceServer()

Method Detail

getStringValue

public java.lang.String getStringValue(DataSource theServer)

This method will find the string associated with a dataSource, rotate it one character and return the value.

Parameters:

theServer - the Marquee Server

Returns:

the rotated String

registerString

public void registerString(java.lang.String newValue,
                           DataSource newServer)

This method is called by a MarqueeServer to initially store the string.

Parameters:

newValue - the new value

newServer - the new marquee server

serverAttached

public boolean serverAttached(DataSource aServer)

Return true if the server has been attached to a MarqueeServer already.

Parameters:

aServer - a Marquee Server

Returns:

true if the server has been attached already.