163 lines
7.5 KiB
HTML
163 lines
7.5 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: Using AS400ConnectionPool" />
|
|
<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="connectpoolexample" />
|
|
<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: Using AS400ConnectionPool</title>
|
|
</head>
|
|
<body id="connectpoolexample"><a name="connectpoolexample"><!-- --></a>
|
|
<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
|
|
<h1 class="topictitle1">Example: Using AS400ConnectionPool</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>//////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// AS400ConnectionPooling example. This program uses an AS400ConnectionPool to
|
|
// create connections to an iSeries server.
|
|
// Command syntax:
|
|
// AS400ConnectionPooling system myUserId myPassword
|
|
//
|
|
// For example,
|
|
// AS400ConnectionPooling MySystem MyUserId MyPassword
|
|
//
|
|
//////////////////////////////////////////////////////////////////////////////////
|
|
|
|
import com.ibm.as400.access.*;
|
|
|
|
public class AS400ConnectionPooling
|
|
{
|
|
public static void main (String[] parameters)
|
|
{
|
|
// Check the input parameters.
|
|
if (parameters.length != 3)
|
|
{
|
|
System.out.println("");
|
|
System.out.println("Usage:");
|
|
System.out.println("");
|
|
System.out.println(" AS400ConnectionPooling system userId password");
|
|
System.out.println("");
|
|
System.out.println("");
|
|
System.out.println("For example:");
|
|
System.out.println("");
|
|
System.out.println("");
|
|
System.out.println(" AS400ConnectionPooling MySystem MyUserId MyPassword");
|
|
System.out.println("");
|
|
return;
|
|
}
|
|
|
|
String system = parameters[0];
|
|
String userId = parameters[1];
|
|
String password = parameters[2];
|
|
|
|
try
|
|
{
|
|
// Create an AS400ConnectionPool.
|
|
AS400ConnectionPool testPool = new AS400ConnectionPool();
|
|
|
|
// Set a maximum of 128 connections to this pool.
|
|
testPool.setMaxConnections(128);
|
|
|
|
// Set a maximum lifetime for 30 minutes for connections.
|
|
testPool.setMaxLifetime(1000*60*30); // 30 min Max lifetime since created.
|
|
|
|
// Preconnect 5 connections to the AS400.COMMAND service.
|
|
testPool.fill(system, userId, password, AS400.COMMAND, 1);
|
|
System.out.println();
|
|
System.out.println("Preconnected 1 connection to the AS400.COMMAND service");
|
|
|
|
// Call getActiveConnectionCount and getAvailableConnectionCount to see how many
|
|
// connections are in use and available for a particular system.
|
|
System.out.println("Number of active connections: "
|
|
+ testPool.getActiveConnectionCount(system, userId));
|
|
System.out.println("Number of available connections for use: "
|
|
+ testPool.getAvailableConnectionCount(system, userId));
|
|
|
|
// Create a connection to the AS400.COMMAND service. (Use the service number
|
|
// constants defined in the AS400 class (FILE, PRINT, COMMAND, DATAQUEUE, and so on.))
|
|
// Since connections have already been filled, the usual time spent connecting
|
|
// to the command service is avoided.
|
|
AS400 newConn1 = testPool.getConnection(system, userId, password, AS400.COMMAND);
|
|
|
|
System.out.println();
|
|
System.out.println("getConnection gives out an existing connection to user");
|
|
System.out.println("Number of active connections: "
|
|
+ testPool.getActiveConnectionCount(system, userId));
|
|
System.out.println("Number of available connections for use: "
|
|
+ testPool.getAvailableConnectionCount(system, userId));
|
|
|
|
// Create a new command call object and run a command.
|
|
CommandCall cmd1 = new CommandCall(newConn1);
|
|
cmd1.run("CRTLIB FRED");
|
|
|
|
// Return the connection to the pool.
|
|
testPool.returnConnectionToPool(newConn1);
|
|
|
|
System.out.println();
|
|
System.out.println("Returned a connection to pool");
|
|
System.out.println("Number of active connections: "
|
|
+ testPool.getActiveConnectionCount(system, userId));
|
|
System.out.println("Number of available connections for reuse: "
|
|
+ testPool.getAvailableConnectionCount(system, userId));
|
|
|
|
// Create a connection to the AS400.COMMAND service. This will return the same
|
|
// object as above for reuse.
|
|
AS400 newConn2 = testPool.getConnection(system, userId, password, AS400.COMMAND);
|
|
|
|
System.out.println();
|
|
System.out.println("getConnection gives out an existing connection to user");
|
|
System.out.println("Number of active connections: "
|
|
+ testPool.getActiveConnectionCount(system, userId));
|
|
System.out.println("Number of available connections for reuse: "
|
|
+ testPool.getAvailableConnectionCount(system, userId));
|
|
|
|
// Create a connection to the AS400.COMMAND service. This will create a new
|
|
// connection as there are not any connections in the pool to reuse.
|
|
AS400 newConn3 = testPool.getConnection(system, userId, password, AS400.COMMAND);
|
|
|
|
System.out.println();
|
|
System.out.println("getConnection creates a new connection because there are no
|
|
connections available");
|
|
System.out.println("Number of active connections: "
|
|
+ testPool.getActiveConnectionCount(system, userId));
|
|
System.out.println("Number of available connections for reuse: "
|
|
+ testPool.getAvailableConnectionCount(system, userId));
|
|
|
|
// Close the test pool.
|
|
testPool.close();
|
|
}
|
|
catch (Exception e)
|
|
{
|
|
// If any of the above operations failed say the pool operations failed
|
|
// and output the exception.
|
|
|
|
System.out.println("Pool operations failed");
|
|
System.out.println(e);
|
|
e.printStackTrace();
|
|
}
|
|
}
|
|
}</pre>
|
|
</div>
|
|
</div>
|
|
|
|
</body>
|
|
</html> |