Calling a Java Script Library from Lotus Script Agent

HCL Notes/Domino 8.5 Forum (includes Notes Traveler)

Subject: Calling a Java Script Library from Lotus Script Agent

Feedback Type: Question

Product Area: Domino Designer on Eclipse (DDE)

Technical Area: Error Message

Platform: Windows 2003 server

Release: 8.5

Reproducible: Always

Hi,

I am hoping someone can help me with a problem I am stumped on.

I have a Lotus Script Agent from which I call a Java Script Library. When executing the Java code there is a null pointer exception and the code bombs out.

I can put the Java Script Library into it's own agent and can run it without any problems.

It seems to be failing when called from the agent on:

Session session = getSession();

This is the call to the Java Script Library from the Lotus Script agent:

Dim mySession As JavaSession
Dim myClass As JavaClass
Dim myObject As JavaObject
Dim myMethod As JavaMethod
Dim success As Boolean

Set mySession = New JavaSession()
Set myClass = mySession.GetClass("HWURLCommand")
Set myMethod = myClass.GetMethod("NotesMain","()V")
Set myObject = myClass.CreateObject()

success = 999
success = myMethod.Invoke(myObject)

If success Then
'Do stuff
Else
'error occurred
End If

This is the Java Script Library:

import lotus.domino.*;
import java.io.*;
import java.net.*;

public class HWURLCommand extends AgentBase {

public void NotesMain(String x) {

try {
System.out.println("*** Started HWURLCommand ***");
Session session = getSession();
System.out.println("1");
AgentContext agentContext = session.getAgentContext();
System.out.println("2");
Database db = agentContext.getCurrentDatabase();
System.out.println("Title:\t\t" + db.getTitle());
String dbFilename = db.getFileName();
System.out.println("File name:\t" + db.getFileName());

//Do Stuff here
}
}
}

I get *** Started HWURLCommand ** to print out on the console and then get the following errors:

Agent Manager: Agent error: java.lang.NullPointerException
Agent Manager: Agent error: at HWURLCommand.NotesMain(HWURLCommand.java:12)
Agent Manager: Agent error: at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
Agent Manager: Agent error: at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:85)
Agent Manager: Agent error: at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:58)
Agent Manager: Agent error: at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:60)
Agent Manager: Agent error: at java.lang.reflect.Method.invoke(Method.java:391)
Agent Manager: Agent error: at lotus.domino.JavaConnectInvoker.invoke(Unknown Source)
Agent Manager: Agent error: at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
Agent Manager: Agent error: at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:85)
Agent Manager: Agent error: at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:58)
Agent Manager: Agent error: at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:60)
Agent Manager: Agent error: at java.lang.reflect.Method.invoke(Method.java:391)
13/07/2009 05:57:58 PM Agent Manager: Agent error: at lotus.domino.JavaConnectLoader.invoke(Unknown Source)

This is exception message from the Lotus Script Agent:

Agent Manager: Agent printing: ***HW agent finished in Exception ***
Agent Manager: Agent message: Error in HW Invalid use of null on line 17

Any help would be appreciated.

Thanks.

Feedback number WEBB7TX3T7 created by ~Hank Reachekobu on 07/14/2009

Status: Open
Comments:

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