Package edu.uiuc.ncsa.sas.cli

Class CLI_IO

java.lang.Object

edu.uiuc.ncsa.sas.cli.CLI_IO

All Implemented Interfaces:

IOInterface, Runnable

public class CLI_IO
extends Object
implements IOInterface, Runnable

This implementation of the IOInterface is for SAS command line clients. It will do the IO with an SAS server.

Constructor Summary

Constructors

Constructor	Description
CLI_IO(IOInterface localIO, Client sasClient)

Method Summary

Modifier and Type	Method	Description
void	clearQueue()	Some implementations will have a queue e.g.
protected String	doExecute(String input)
void	flush()	Flush anything waiting to be printed.
IOInterface	getLocalIO()
protected void	init()	Initialize the service client.
boolean	isBufferingOn()	return current state of buffering.
boolean	isQueueEmpty()	Check if the queue is empty.
void	print(Object x)	Print the string representation of an object, without a carriage return.
void	println(Object x)	Print the string representation of an object with a carriage return.
String	readline()	Read a line of input with no prompt.
String	readline(String prompt)	read a line of input, printing the prompt (on the left) first.
void	run()
void	setBufferingOn(boolean bufferOn)	If this object supports buffering of commands, this will toggle it.
void	setLocalIO(IOInterface localIO)

Methods inherited from class java.lang.Object

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

Constructor Detail

CLI_IO

public CLI_IO(IOInterface localIO,
              Client sasClient)
       throws Exception

Throws:

Exception

Method Detail

getLocalIO

public IOInterface getLocalIO()

setLocalIO

public void setLocalIO(IOInterface localIO)

readline

public String readline(String prompt)
                throws IOException

Description copied from interface: IOInterface

read a line of input, printing the prompt (on the left) first. The prompt is not returned.

Specified by:

readline in interface IOInterface

Returns:

Throws:

IOException

doExecute

protected String doExecute(String input)
                    throws IOException

Throws:

IOException

readline

public String readline()
                throws IOException

Description copied from interface: IOInterface

Read a line of input with no prompt.

Specified by:

readline in interface IOInterface

Returns:

Throws:

IOException

print

public void print(Object x)

Description copied from interface: IOInterface

Print the string representation of an object, without a carriage return.

Specified by:

print in interface IOInterface

println

public void println(Object x)

Description copied from interface: IOInterface

Print the string representation of an object with a carriage return.

Specified by:

println in interface IOInterface

flush

public void flush()

Description copied from interface: IOInterface

Flush anything waiting to be printed. Normally this is done with the print methods.

Specified by:

flush in interface IOInterface

clearQueue

public void clearQueue()

Description copied from interface: IOInterface

Some implementations will have a queue e.g. if the user paste text from the clipboard). The IOInterface.readline(String) methods will queue these up and return them in sequence -- this is done silently. If for some reason you need only a single line and want to discard anything else, invoke this.

Specified by:

clearQueue in interface IOInterface

isQueueEmpty

public boolean isQueueEmpty()

Description copied from interface: IOInterface

Check if the queue is empty.

Specified by:

isQueueEmpty in interface IOInterface

Returns:

setBufferingOn

public void setBufferingOn(boolean bufferOn)

Description copied from interface: IOInterface

If this object supports buffering of commands, this will toggle it. Buffering means that every result of IOInterface.readline(String) will be stored and up down arrows will cycle through them.

Specified by:

setBufferingOn in interface IOInterface

isBufferingOn

public boolean isBufferingOn()

Description copied from interface: IOInterface

return current state of buffering.

Specified by:

isBufferingOn in interface IOInterface

Returns:

run

public void run()

Specified by:

run in interface Runnable

init

protected void init()
             throws Exception

Initialize the service client. At the end of this call, the CLI will be communicating with the SAS server and a session will have been established.

Throws:

Exception