Personalizzazione avanzata > Info*Engine User's Guide (Guida dell'utente Info*Engine) > Server Access Kit > Example SAK Application
  
Example SAK Application
The following example application provides a simple example that shows the use of the Server Access Kit (SAK). The example is named ExecuteTask.java and is located in the prog_examples/SAK_apps directory where Info*Engine is installed.
The example application executes a task supplied when you run the application.
Compile the Application
To compile the application:
1. Set your CLASSPATH environment variable.
Your CLASSPATH environment variable must include the following files/folders:
%JAVA_HOME%/lib/tools.jar
%<Windchill>%/lib/servlet.jar
%<Windchill>%/codebase
%<Windchill>%/codebase/WEB-INF/classes
%<Windchill>%/codebase/WEB-INF/lib/ieWeb.jar
Example:
set
CLASSPATH=C:/jdk1.3.1/lib/tools.jar;C:/ptc/Windchill/lib/servlet
.jar;C:/ptc/Windchill/codebase;C:/ptc/Windchill/codebase/WEB-INF/
classes;C:/ptc/Windchill/codebase/WEB-INF/lib/ieWeb.jar
2. Create the following directory:
%<Windchill>%/codebase/WEB-INF/classes
3. Change to the directory:
%<Windchill>>%/prog_examples/SAK_apps
and execute the following:
javac -d %<Windchill>%/codebase/WEB-INF/classes ExecuteTask.java
Run the Application
To run the application, use the following syntax:
java com.infoengine.examples.applications.ExecuteTask
-t <task_uri>
-u <username>
-props <property resource>
-n <naming service name>
where:
<task_uri> is the URI of the task to be executed
<username> associates the username specified with the task
<property resource> is the directory path to the property resource file ie.properties
<naming service name> uses the specified Naming Service
For example:
java com.infoengine.examples.applications.ExecuteTask -t
C:/ptc/Windchill/tasks/infoengine/examples/CreateGroup.xml -u
wcadimn -props C:/ptc/Windchill/codebase/WEB-INF/ie.properties
-n com.ptc.host.namingService
Application Source
The following code implements the example:
package com.infoengine.examples.applications;

import com.infoengine.au.NamingService;
import com.infoengine.object.factory.Group;
import com.infoengine.SAK.Task;
import com.infoengine.util.IEException;

import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Enumeration;
import java.util.Vector;

public class ExecuteTask {

    /**
     * Demonstrate the com.infoengine.SAK interface of Infoengine.
     *
     * command line: java com.infoengine.examples.applications.ExecuteTask
     * -t <task uri>
     * -p <processor>
     * -u <username>
     * -n <naming service name>
     * -props <property resource>
     *
     * @param args
     */
    public static void main ( String [] args ) {

      String taskUri = null;
        String processor = null;
        String username = null;
        String namingService = null;
        String props = null;

        for ( int i = 0; i < args.length; i++ ) {
            if ( args[i].equals ( "-t" ) ) {
                if ( i < args.length-1 )
                    taskUri = args[++i];
            }
            else if ( args[i].equals ( "-p" ) ) {
                if ( i < args.length-1 )
                    processor = args[++i];
            }
            else if ( args[i].equals ( "-u" ) ) {
                if ( i < args.length-1 )
                    username = args[++i];
            }
            else if ( args[i].equals ( "-n" ) ) {
                if ( i < args.length-1 )
                    namingService = args[++i];
            }
            else if ( args[i].equals ( "-props" ) ) {
                if ( i < args.length-1 )
                    props = args[++i];
            }
            else {
                System.err.println
                    ("unrecognized parameter \"" + args[i] + "\"");
                usage ();
            }
        }
        if ( taskUri == null ) {
            System.err.println ( "missing required parameter -t <task uri>" );
            usage ();
        }
        if ( namingService == null )
           namingService = "namingService";
        if ( props == null )
            System.err.println
               ("missing required parameter -props <property resource>");
            usage ();
        // Initialize the naming service and read the infoengine properties
        try {
           NamingService ns =
                NamingService.newInstance (namingService, props);
        }
        catch ( FileNotFoundException f ) {
            System.err.println (props + ": property file not found");
            System.exit (1);
        }
        catch ( Exception e ) {
            System.err.println (props + ": unable to read properties");
            e.printStackTrace (System.err);
            System.exit (1);
        }
        // Create a Task object to execute
        Task task = null;
        if ( processor == null ) {
            task = new Task (taskUri);
        }
        else {
            Vector procVector = new Vector ();
            procVector.addElement (processor);
            task = new Task (taskUri, procVector);
        }
        // execute the task
        try {
            task.invoke ();
        }
        catch ( Exception e ) {
            e.printStackTrace (System.err);
            System.exit (1);
        }
        // retrieve and print the results
        Enumeration groups = task.getGroupNames ();
        System.out.println ("groups produced by " + taskUri + ": " + groups);
        PrintWriter pw = new PrintWriter (System.out);
        while ( groups.hasMoreElements () ) {
            Group group = task.getGroup ((String)groups.nextElement ());
            group.toXML (pw, true, true);
        }
        System.exit ( 0 );
    }
    /**
     * Print the command line parameters
     */
    public static void usage () {
        System.err.println
            ("java com.infoengine.examples.applications.ExecuteTask");
        System.err.println ("\t-t <task uri>");
        System.err.println ("\t-p <processor>");
        System.err.println ("\t-u <username>");
        System.err.println ("\t-n <naming service name>");
        System.err.println ("\t-props <property resource>");
        System.exit (1);
    }
}