Re: How to set up Library list for servlet on AS400?

Yes, I just tried and it has not worked yet. I need to look into it more.
(I am on WAS 2 and Jai also had instructions for WAS 2)
Bruce


-----Original Message-----
From: Frances Stewart <francess@us.ibm.com>
To: JAVA400-L@midrange.com <JAVA400-L@midrange.com>
Date: Tuesday, March 13, 2001 1:59 PM
Subject: Re: How to set up Library list for servlet on AS400?


>
>Have you tried this method (Jai Goradia posted it to the WebSphere
>Application Server for iSeries newsgroup earlier in responce to Bruce's
>question):
>
>Bruce,
>        Here is what i would do. In the admin console find and click on
>your
>application server in the topology view.  On the general tab for the
>application server you will see a field where you can specify command line
>arguments for the Java Virtual Machine that will be created for use by the
>Application server. It is typically prefilled with a value for the java
>minimum heap size namely an entry like -ms32m. This field allows you to
>specify system properties for the JVM. add a property called
>java.library.path in there. So you would enter
>-Djava.library.path=/QSYS.LIB/MYLIB.LIB after separating the previous value
>in that field with a space in between(ie. -ms32m
>-Djava.library.path=/QSYS.LIB/MYLIB.LIB).  This tells the JVM in the
>application server executing  the servlets where to look for the service
>programs that the servlet code references after doing a loadLibrary() in a
>static section in the code to load the service program native code into
>memory.  Once you add this property to the command line arguments you will
>need to restart the application server for it to take effect.  Try that.
>
>
>Frances Stewart
>WebSphere Application Server for iSeries 400
>IBM Rochester
>
>
>mandy.shaw@uk.catalyst-solutions.com@midrange.com on 03/13/2001 12:10:15 PM
>
>Please respond to JAVA400-L@midrange.com
>
>Sent by:  owner-java400-l@midrange.com
>
>
>To:   JAVA400-L@midrange.com
>cc:
>Subject:  Re: How to set up Library list for servlet on AS400?
>
>
>
>I should be very interested in the answer to this one also - the only way I
>have come up with is using the WAS Admin Console to tell the WAS Web
>Application Server to run under a specific user profile that has the right
>library list on its job description. This also required me to go into the
>Ops Nav Application Admin thing to tell WAS that this user profile was
>allowed to be used for this purpose. I never actually finished testing this
>so I don't even know whether it would have worked.
>Incidentally, when you compare performance with a Toolbox call, it would be
>interesting to know whether you'd optimised the Toolbox to level 40 before
>the test or not.
>Mandy
>
>
>
>
>
>"Bruce Jin" <brucej@MRC-PRODUCTIVITY.COM> on 13/03/2001 17:26:17
>
>Please respond to JAVA400-L@midrange.com
>
>To:   JAVA400-L@midrange.com
>cc:    (bcc: Mandy Shaw/Pacific/UK)
>Subject:  Re: How to set up Library list for servlet on AS400?
>
>
>
>
>
>Hi Jim.
>
>Thanks for the response!
>I can now call JNI to RPG in Qshell or RUNJVA using java.library.path
>property.
>
>I found it is interesting that I can also add MYLIB to my library list
>before using RUNJVA or going to Qshell so that I don't have to use
>java.library.path property.
>
>Now my question is: I use JNI to call RPG in servlets which are invoked by
>WebSphere. How do I add MYLIB to the "library path" of the servlets or
>WebSphere?
>
>(BTW, it appears that JNI call is a lot faster than Toolbox program call in
>Qshell or RUNJVA)
>
>TIA
>Bruce
>
>
>-----Original Message-----
>From: Jim Mason <JEMason@compuserve.com>
>To: INTERNET:JAVA400-L@midrange.com <JAVA400-L@midrange.com>
>Date: Tuesday, March 13, 2001 10:53 AM
>Subject: How to set up Library list for servlet on AS400?
>
>
>
>Hi Bruce.
>
>For JNI, a good way to specify the library list for an RPG program is:
>
>supply the list in the java.library.path property.
>You can modify the java.library.path property in QShell and from the AS/400
>command line.
>
>From the Qshell command prompt, type in:
>java -Deja.library.path=/QSYS.LIB/MYLIB.LIB -Djava.version=1.2 myclass
>
>Or, from the AS/400 command line, type in:
>JAVA PROP((java.library.path '/QSYS.LIB/MYLIB.LIB') (java.version '1.2'))
>myclass
>
>Where /QSYS.LIB/MYLIB.LIB is the library that you wish to load using the
>'System.loadLibrary()' call,
>and myclass is the name of your Java application.
>
>see the AS/400 Java manual:
>AS/400 Developer Kit for Java for more on JNI...
>
>Other options than JNI to call RPG programs from Java include:
>1  JDBC stored procedures
>2  Java toolkit program call class
>3  Runtime.exec()
>
>JNI is very good if you need to call specific procedures in an ILE service
>program.  If you write RPG ILE service programs, you can call specific
>procedures nicely.  Any of the other methods are easier to do than JNI BUT
>only can call a program ( not a specific procedure ) passing parms and
>receiving updated parms back.
>
>JDBC stored procedures are excellent IF your RPG program should do some
>complex processing and return a simple result set of rows for a client Java
>application to process....
>
>Hope this helps...
>
>Jim Mason
>
>
>Message text written by INTERNET:JAVA400-L@midrange.com
>>
>I am trying to use JNI to call RPG programs in servlet. I put the RPG
>service program in library MYLIB. How do I include MYLIB in the "library
>path" of the servlet so that servlets can find the service program?
>
>TIA.
>
>Bruce
><
>
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>      Regards,
>      Mandy Shaw
>
>      Catalyst Solutions plc
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