net.sf.lpr.spi
Class AbstractPrint

java.lang.Object
  net.sf.lpr.spi.AbstractPrint

All Implemented Interfaces:

LPR

Direct Known Subclasses:

LPRAsBerkeleyUnixPlot, LPRDitroff, LPRDVI, LPRFORTRAN, LPRLeavingControlCharacters, LPRPlainText, LPRPostscript

public abstract class AbstractPrint
extends java.lang.Object
implements LPR

Implements the LPR interface. Holds all the boiler plate code that would be duplicated throughout all the different print requests. It uses a Socket to do the communication with the server. The server is assumed to be running the standard LPD port of 515.

Author:

x_sid

Constructor Summary

protected

AbstractPrint(java.lang.String serverName, java.lang.String username, java.lang.String printQueue, java.lang.String filename, java.io.InputStream toPrint, long toPrintLength) Construct a call to the LPD server to send a file to the server

Method Summary

protected abstract PrintType	getPrintJobType()
void	print() Call print once the actual call to the LPD server needs to be made.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractPrint

protected AbstractPrint(java.lang.String serverName,
                        java.lang.String username,
                        java.lang.String printQueue,
                        java.lang.String filename,
                        java.io.InputStream toPrint,
                        long toPrintLength)

Construct a call to the LPD server to send a file to the server

Parameters:

serverName - the name of the server that the print queue is running on

username - the name of the user that will be sent to the server as requesting the print request

printQueue - the queue on the LPD server that the postscript file will be sent to

filename - this is a generic filename that will be used to identify the file. It is really just a simple identifier.

toPrint - the InputStream that will be read and sent to the server to be printed. It is not closed by this class.

toPrintLength - the length of the InputStream that is to be printed. This is needed because the spec needs to know how long the actual file to be printed is when the control file is sent to the LPD server

Method Detail

getPrintJobType

protected abstract PrintType getPrintJobType()

print

public void print()
           throws IORuntimeException,
                  UnknownHostRuntimeException

Call print once the actual call to the LPD server needs to be made. The connection to the server is not made until this method is called. Also once the method returns the connection to the server will be closed. Also the InputStream passed in through the constructor is not closed. It is up to the caller to close it.

Specified by:

print in interface LPR

Throws:

IORuntimeException

UnknownHostRuntimeException