Example: Listing spooled files asynchronously (without using listeners)

/////////////////////////////////////////////////////////////////////////
//
// Example that shows listing all spooled files on a system Asynchronously without
// using the PrintObjectListListener interface. After opening the list the caller
// can do some additional work before waiting for the list to complete.
//
/////////////////////////////////////////////////////////////////////////
//
// This source is an example of IBM Toolbox for Java "PrintObjectList".
//
/////////////////////////////////////////////////////////////////////////

import java.util.Enumeration;

import com.ibm.as400.access.AS400;
import com.ibm.as400.access.SpooledFileList;
import com.ibm.as400.access.SpooledFile;

public class NPExampleListSplfAsynch2 extends Object
{
    private AS400 system_;

    public NPExampleListSplfAsynch2(AS400 system)
    {
        system_ = system;
    }

    // list all spooled files on the system asynchronously
    public void listSpooledFiles()
    {
        try
        {
            String strSpooledFileName;
            int listed, size;

            if( system_ == null )
            {
                system_ = new AS400();
            }

            System.out.println(
               "Now receiving all spooled files Asynchronously without 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");

            // open list, openAsynchronously() returns immediately
            // we have not added any listeners...
            splfList.openAsynchronously();

            System.out.println(" Do some processing before waiting...");

            // ... do some processing here while the list is being built....

            System.out.println(" Now wait for list to complete.");

            // wait for the list to complete
            splfList.waitForListToComplete();

            Enumeration enum = splfList.getObjects();

            // output the name of all objects on the list
            while( enum.hasMoreElements() )
            {
                SpooledFile splf = (SpooledFile)enum.nextElement();
                if (splf != null)
                {
                    // output this spooled file's name
                    strSpooledFileName = splf.getStringAttribute(SpooledFile.ATTR_SPOOLFILE);
                    System.out.println(" spooled file = " + strSpooledFileName);
                }
            }
            // clean up after we are done with the list
            splfList.close();
        }

        catch( Exception e )
        {
            // ...handle any exceptions...
            e.printStackTrace();
        }
    }

    public static void main( String args[] )
    {
        NPExampleListSplfAsynch2 list = new NPExampleListSplfAsynch2(new AS400());
        try{
            list.listSpooledFiles();
        }
        catch( Exception e )
        {
            e.printStackTrace();
        }
        System.exit(0);
    }
}