248 lines
8.6 KiB
HTML
248 lines
8.6 KiB
HTML
<?xml version="1.0" encoding="UTF-8"?>
|
|
<!DOCTYPE html
|
|
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
|
<html lang="en-us" xml:lang="en-us">
|
|
<head>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|
<meta name="security" content="public" />
|
|
<meta name="Robots" content="index,follow" />
|
|
<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
|
|
<meta name="DC.Type" content="reference" />
|
|
<meta name="DC.Title" content="Example: Listing spooled files asynchronously (using listeners)" />
|
|
<meta name="abstract" content="" />
|
|
<meta name="description" content="" />
|
|
<meta name="copyright" content="(C) Copyright IBM Corporation 2006" />
|
|
<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2006" />
|
|
<meta name="DC.Format" content="XHTML" />
|
|
<meta name="DC.Identifier" content="npexamplelistsplfasynch" />
|
|
<meta name="DC.Language" content="en-us" />
|
|
<!-- All rights reserved. Licensed Materials Property of IBM -->
|
|
<!-- US Government Users Restricted Rights -->
|
|
<!-- Use, duplication or disclosure restricted by -->
|
|
<!-- GSA ADP Schedule Contract with IBM Corp. -->
|
|
<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
|
|
<link rel="stylesheet" type="text/css" href="./ic.css" />
|
|
<title>Example: Listing spooled files asynchronously (using listeners)</title>
|
|
</head>
|
|
<body id="npexamplelistsplfasynch"><a name="npexamplelistsplfasynch"><!-- --></a>
|
|
<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
|
|
<h1 class="topictitle1">Example: Listing spooled files asynchronously (using listeners)</h1>
|
|
<div><p></p>
|
|
<div class="section"><div class="note"><span class="notetitle">Note:</span> Read the <a href="codedisclaimer.htm#codedisclaimer">Code
|
|
example disclaimer</a> for important legal information.</div>
|
|
<pre>/////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Example that shows listing all spooled files on a server asynchronously using
|
|
// the PrintObjectListListener interface to get feedback as the list is being built.
|
|
// Listing asynchronously allows the caller to start processing the list objects
|
|
// before the entire list is built for a faster perceived response time
|
|
// for the user.
|
|
//
|
|
/////////////////////////////////////////////////////////////////////////
|
|
|
|
import com.ibm.as400.access.AS400;
|
|
import com.ibm.as400.access.SpooledFileList;
|
|
import com.ibm.as400.access.SpooledFile;
|
|
import com.ibm.as400.access.ExtendedIllegalStateException;
|
|
import com.ibm.as400.access.PrintObjectListListener;
|
|
import com.ibm.as400.access.PrintObjectListEvent;
|
|
|
|
public class NPExampleListSplfAsynch extends Object implements PrintObjectListListener
|
|
{
|
|
private AS400 system_;
|
|
private boolean fListError;
|
|
private boolean fListClosed;
|
|
private boolean fListCompleted;
|
|
private Exception listException;
|
|
private int listObjectCount;
|
|
|
|
public NPExampleListSplfAsynch(AS400 system)
|
|
{
|
|
system_ = system;
|
|
}
|
|
|
|
// list all spooled files on the server asynchronously using a listener
|
|
public void listSpooledFiles()
|
|
{
|
|
fListError = false;
|
|
fListClosed = false;
|
|
fListCompleted = false;
|
|
listException = null;
|
|
listObjectCount = 0;
|
|
|
|
try
|
|
{
|
|
String strSpooledFileName;
|
|
boolean fCompleted = false;
|
|
int listed = 0, size;
|
|
|
|
if( system_ == null )
|
|
{
|
|
system_ = new AS400();
|
|
}
|
|
|
|
System.out.println(" Now receiving all spooled files Asynchronously using a listener");
|
|
|
|
SpooledFileList splfList = new SpooledFileList(system_);
|
|
|
|
// set filters, all users, on all queues
|
|
splfList.setUserFilter("*ALL");
|
|
splfList.setQueueFilter("/QSYS.LIB/%ALL%.LIB/%ALL%.OUTQ");
|
|
|
|
// add the listener.
|
|
splfList.addPrintObjectListListener(this);
|
|
|
|
// open the list, openAsynchronously returns immediately
|
|
splfList.openAsynchronously();
|
|
|
|
do
|
|
{
|
|
// wait for the list to have at least 25 objects or to be done
|
|
waitForWakeUp();
|
|
|
|
fCompleted = splfList.isCompleted();
|
|
size = splfList.size();
|
|
|
|
// output the names of all objects added to the list
|
|
// since we last woke up
|
|
while (listed < size)
|
|
{
|
|
if (fListError)
|
|
{
|
|
System.out.println(" Exception on list - " + listException);
|
|
break;
|
|
}
|
|
|
|
if (fListClosed)
|
|
{
|
|
System.out.println(" The list was closed before it completed!");
|
|
break;
|
|
}
|
|
|
|
SpooledFile splf = (SpooledFile)splfList.getObject(listed++);
|
|
if (splf != null)
|
|
{
|
|
// output this spooled file name
|
|
strSpooledFileName = splf.getStringAttribute(SpooledFile.ATTR_SPOOLFILE);
|
|
System.out.println(" spooled file = " + strSpooledFileName);
|
|
}
|
|
}
|
|
|
|
} while (!fCompleted);
|
|
|
|
// clean up after we are done with the list
|
|
splfList.close();
|
|
splfList.removePrintObjectListListener(this);
|
|
}
|
|
|
|
catch( ExtendedIllegalStateException e )
|
|
{
|
|
System.out.println(" The list was closed before it completed!");
|
|
}
|
|
|
|
catch( Exception e )
|
|
{
|
|
// ...handle any other exceptions...
|
|
e.printStackTrace();
|
|
}
|
|
|
|
}
|
|
|
|
// This is where the foreground thread waits to be awaken by the
|
|
// the background thread when the list is updated or it ends.
|
|
private synchronized void waitForWakeUp() throws InterruptedException
|
|
{
|
|
// don''t go back to sleep if the listener says the list is done
|
|
if (!fListCompleted)
|
|
{
|
|
wait();
|
|
}
|
|
}
|
|
|
|
// The following methods implement the PrintObjectListListener interface
|
|
|
|
// This method is invoked when the list is closed.
|
|
public void listClosed(PrintObjectListEvent event)
|
|
{
|
|
System.out.println("*****The list was closed*****");
|
|
fListClosed = true;
|
|
synchronized(this)
|
|
{
|
|
// Set flag to indicate that the list has
|
|
// completed and wake up foreground thread.
|
|
fListCompleted = true;
|
|
notifyAll();
|
|
}
|
|
}
|
|
|
|
// This method is invoked when the list is completed.
|
|
public void listCompleted(PrintObjectListEvent event)
|
|
{
|
|
System.out.println("*****The list has completed*****");
|
|
synchronized (this)
|
|
{
|
|
// Set flag to indicate that the list has
|
|
// completed and wake up foreground thread.
|
|
fListCompleted = true;
|
|
notifyAll();
|
|
}
|
|
}
|
|
|
|
// This method is invoked if an error occurs while retrieving
|
|
// the list.
|
|
public void listErrorOccurred(PrintObjectListEvent event)
|
|
{
|
|
System.out.println("*****The list had an error*****");
|
|
fListError = true;
|
|
listException = event.getException();
|
|
synchronized(this)
|
|
{
|
|
// Set flag to indicate that the list has
|
|
// completed and wake up foreground thread.
|
|
fListCompleted = true;
|
|
notifyAll();
|
|
}
|
|
}
|
|
|
|
// This method is invoked when the list is opened.
|
|
public void listOpened(PrintObjectListEvent event)
|
|
{
|
|
System.out.println("*****The list was opened*****");
|
|
listObjectCount = 0;
|
|
}
|
|
|
|
// This method is invoked when an object is added to the list.
|
|
public void listObjectAdded(PrintObjectListEvent event)
|
|
{
|
|
// every 25 objects we'll wake up the foreground
|
|
// thread to get the latest objects...
|
|
if( (++listObjectCount % 25) == 0 )
|
|
{
|
|
System.out.println("*****25 more objects added to the list*****");
|
|
synchronized (this)
|
|
{
|
|
// wake up foreground thread
|
|
notifyAll();
|
|
}
|
|
}
|
|
}
|
|
|
|
public static void main( String args[] )
|
|
{
|
|
NPExampleListSplfAsynch list = new NPExampleListSplfAsynch(new AS400());
|
|
try{
|
|
list.listSpooledFiles();
|
|
}
|
|
catch( Exception e )
|
|
{
|
|
e.printStackTrace();
|
|
}
|
|
System.exit(0);
|
|
}
|
|
|
|
}</pre>
|
|
</div>
|
|
</div>
|
|
|
|
</body>
|
|
</html> |