Ray/Markus
JNI specifies the library LD_LIBRARY_PATH should be used to locate the library in Unix/Linux environments
creation of .so
Unix or Linux:
LD_LIBRARY_PATH=`pwd`
export LD_LIBRARY_PATH
creation of .dll
Windows NT/2000/95:
set PATH=%path%;.
i have seen issues popup with use of LD_LIBRARY_PATH
but that has to be resolved by OS
fairly comprehensive tutorial available at
http://java.sun.com/developer/onlineTraining/Programming/JDCBook/jniexamp.html
out of curiosity what OS are you running on?
Martin Gainty
______________________________________________
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> Date: Mon, 1 Jun 2009 15:36:42 +0200
> From: karg_at_quipsy.de
> To: users_at_glassfish.dev.java.net
> Subject: RE: RE: RE: RE: RE: RE: Re: JNI/CompositeApp/Glassfish
>
> GlassFish does not intentionally restrict JNI. Actually, it doesn't care
> whether your code is pure Java or implemented using JNI. So it shouldn't
> be a problem to use JNI. If it does not work, it shouldn't be caused by
> JNI. I am using JNI in GlassFish's ACC (The JDIC Library) and it works
> without any problem. Have not used JNI on the server side, but should
> work, too.
>
> Does that answer your question?
>
> Regards
> Markus
>
> > -----Original Message-----
> > From: Martin, Ray [mailto:armart3_at_tycho.ncsc.mil]
> > Sent: Freitag, 29. Mai 2009 21:19
> > To: users_at_glassfish.dev.java.net
> > Subject: RE: RE: RE: RE: RE: Re: JNI/CompositeApp/Glassfish
> >
> > You are saying that you did not understand my question?
> >
> > My very first question, I asked "does anyone have a JNI app in
> > Glassfish?"
> >
> > And that is really all I wanted to know. Of course, those that have
> > the
> > experience, I would be interested in how it was accomplished.
> >
> > Thanx.
> >
> >
> > -----Original Message-----
> > From: Markus Karg [mailto:karg_at_quipsy.de]
> > Sent: Friday, May 29, 2009 1:57 PM
> > To: users_at_glassfish.dev.java.net
> > Subject: RE: RE: RE: RE: Re: JNI/CompositeApp/Glassfish
> >
> > Well, if time is scarce then you might should abstain from writing
> > novels like this and concentrate on the technological issues. If you
> > want use GlassFish this does not mean that you must use EJB. If EJB
> > forbids JNI this does not mean that it is impossible to use it in
> > GlassFish. The question is: What do you want to get?
> >
> > If you want a portable solution, you must wrap JNI using JCA, just
> like
> > Java EE specifies it. JCA is not as complex as you might think and you
> > can use ready to use building bricks, like RAFC
> > (http://sourceforge.net/projects/rafc). Using RAFC is simple and it
> > provides 90% of the boilderplate code.
> >
> > If you do not need a portable solution, just hack your JNI calls into
> > your server side (EJBs or whatever). If there is a bug, ask your
> > questions here and the community will help.
> >
> > If you don't essentially need GlassFish and you just want to have a
> > stable platform, use JAX-WS contained in Java SE 6. Believe mit, that
> > is
> > thoroughly tested, too.
> >
> > Independent of what your decision is, please DECIDE ON YOUR OWN, but
> DO
> > DECIDE. We try to help you, but we just do not understand what your
> > actual, TECHNICAL problem is.
> >
> > Regards
> > Markus
> >
> > > -----Original Message-----
> > > From: Martin, Ray [mailto:armart3_at_tycho.ncsc.mil]
> > > Sent: Freitag, 29. Mai 2009 16:14
> > > To: users_at_glassfish.dev.java.net
> > > Subject: RE: RE: RE: Re: JNI/CompositeApp/Glassfish
> > >
> > > Yea - I hear you. I am running around in circles right now trying
> to
> > > find a temporary solution.
> > >
> > > I was, in times past, of the opinion to steer clear of Glassfish.
> > But,
> > > I have since drank the cool-aid - I now want ALL my SOA nodes to be
> > > Glassfish. Glassfish means a lot of different things. At one
> moment
> > > in time, Glassfish means one thing, in another moment in time
> > > Glassfish has another meaning. But, for me, all cases have the
> > > meaning of a grid of SOA nodes. SOA nodes? Yes, Sir. How else but
> > > JAX-WS? So, for me, ALL my Glassfish instances hava a 'JAX-WS port'
> > > (some have several).
> > >
> > > So, people, far smarter than I, have built a container with SOA
> > > 'faces'.
> > > They have tested. They have reduced the footprint. They have
> > systemic
> > > qualities. They have flexibility that allows for different uses -
> > > sometimes running J2EE stacks, sometimes running EJBModules,
> > sometimes
> >
> > > running IEP, sometimes BPEL - but, no matter, for me, all have 'JAX-
> > WS
> >
> > > ports'. It is called Glassfish. And, in the face of all of that,
> > > someone suggests "just go make your own container" - a simple
> > > container, but a container none-the-less. Not being your brightest
> > > boy - this just blows my mind.
> > >
> > > When the system starts up, dozens (today - hundreds to thousands,
> > > tomorrow)of Glassfish nodes light up. The nodes are instructed to
> > load
> > > their behavior. Processing begins - as needs change, bottle necks
> > are
> >
> > > located, the system is further tuned - nodes are added and behavior
> > is
> >
> > > loaded at the node. To enable this type of system, we are always
> > > looking for commonality - reduction in variability while maintaining
> > > flexibility. Selecting a common container is important. I hung my
> > hat
> >
> > > on Glassfish. Can I run off and create my own container - yea -
> > might
> >
> > > do that. But, first, I look for that common factor. If it is not
> > > attainable, then I look for options. Several options have been
> > > provided
> > > - and, I appreciate all assistance that has been provided. JCA,
> > JAX-WS
> > > has been suggested. Of course, there are sockets. And there is
> JMS.
> > > All require a container (minimally, a listener) at the endpoint -
> too
> > > bad that container cannot be a Glassfish. I know that that
> container
> > > can be a ServiceMix, but I had my heels dug in, not wanting to go
> > that
> >
> > > direction. I will use a container before I write my own.
> > >
> > > So, if my superiors do not give me a pink ticket for not meeting my
> > > deadline, I will have multiple of these "JNI nodes" in my SOA grid.
> > > Now
> > > Glassfish has JMX for monitoring. There is a DAS if you cluster.
> > > There
> > > is Shoal coming along. But, my little decrepit JNI nodes that I
> > create
> > > will not allow for system awareness. They are warts on my system
> > that
> >
> > > will plague me forever. Thus, the reason why I want all processing
> > > nodes to live within Glassfish.
> > >
> > > So, I am between a rock and a hard place.
> > >
> > > I appreciate the assistance - you may have saved my job (if I can
> get
> > > one of the options working before time runs out). Thanx.
> > >
> > >
> > > -----Original Message-----
> > > From: Markus Karg [mailto:karg_at_quipsy.de]
> > > Sent: Friday, May 29, 2009 9:18 AM
> > > To: users_at_glassfish.dev.java.net
> > > Subject: RE: RE: Re: JNI/CompositeApp/Glassfish
> > >
> > > If all you need is to run a BPEL wrapper around a JNI call then you
> > > should have a look at JAX-WS, included in Java SE 6. No need for any
> > > enterprise stuff at all.
> > >
> > > > -----Original Message-----
> > > > From: Martin, Ray [mailto:armart3_at_tycho.ncsc.mil]
> > > > Sent: Freitag, 29. Mai 2009 14:22
> > > > To: users_at_glassfish.dev.java.net
> > > > Subject: RE: Re: JNI/CompositeApp/Glassfish
> > > >
> > > > Yes, Mr. Chris suggested to use jmap and jhat to locate the leak.
> > In
> > > > my search for how to use those tools, I found that JNI is not
> > > supposed
> > >
> > > > to work in EJB. So, I said to myself "wow, I am trying to do
> stuff
> > > > that you are not even supposed to be doing. It does not really
> > matter
> > > > whether there appears to be a leak or not - the specs say don't do
> > > > it." I
> > > will
> > > > spend many weeks on classloaders and jhat and jmap and... I had a
> > > > deadline to meet to show the great world of Glassfish SOA.
> > > >
> > > > I do not know how to deploy a POJO app (with a BPEL 'face') in a
> > > > composite app. If I knew that, I could call the JNI from the POJO
> > > > (staying out of that EJB world) and meet my deadline and put a
> > smile
> > > on
> > > > my superiors faces. Then later, after my superiors agree that my
> > > > selection of Glassfish is marvelous, then I can look for memory
> > leaks
> > > > or whatever. But, right now, it's killing me.
> > > >
> > > > Thanx.
> > > >
> > > > -----Original Message-----
> > > > From: Sanjeeb.Sahoo_at_Sun.COM [mailto:Sanjeeb.Sahoo_at_Sun.COM] On
> > Behalf
> > > Of
> > > > Sahoo
> > > > Sent: Friday, May 29, 2009 8:07 AM
> > > > To: users_at_glassfish.dev.java.net
> > > > Subject: Re: JNI/CompositeApp/Glassfish
> > > >
> > > > Martin,
> > > >
> > > > I am confused. What's your issue? In your first posting you
> > mentioned
> > > > that you were successful in running JNI code inside GlassFish
> > except
> >
> > > > that you suspected some memory leak for which Chris suggested to
> > use
> >
> > > > tools like hat. You were supposed to analyse the memory leak. Have
> > > you
> > >
> > > > identified the cause? If yes, then tell us and tell us if it needs
> > a
> >
> > > > fix in GF.
> > > >
> > > > I have failed to identify if you have any other issue in this
> email
> > > > thread. Personally, I have not come across many use cases where a
> > > J2EE
> > >
> > > > app uses JNI. It appears that the spec discourages use of JNI. See
> > > [1]
> > >
> > > > for some discussion. So, over all, it should work with some
> > > > limitations.
> > > >
> > > > Thanks,
> > > > Sahoo
> > > >
> > > > [1]
> > > http://www.theserverside.com/discussions/thread.tss?thread_id=14057
> > > >
> > > > Martin, Ray wrote:
> > > > > i am readin' and scratchin' for JCA information - WOW. What a
> > > > complex
> > > >
> > > > > convoluted mechanism to merely call a tiny piece of code.
> > > > >
> > > > > i have many Glassfish instances running a variety of things as
> > SOA
> >
> > > > > nodes. One of the things that one of the Glassfish nodes must
> do
> > > is
> > >
> > > > > run a mathematical algorithm called a bayesian net.
> > > > >
> > > > > Why should it matter that that one instance is not portable?
> So,
> > > it
> > >
> > > > > must run on a specific hardware platform, who cares? All that
> is
> > > > > necessary is for the classloader to function properly to allow
> > this
> > > > > particular non-portable code to run in a nice simplistic manner.
> > > > >
> > > > > But, no - i now am required to build my own EIS-like system to
> > > > contain
> > > >
> > > > > a daemon process to listen for commands to run a small
> algorithm.
> > > > > Then i need to create an adapter. Then i need to create a
> > > connector.
> > > >
> > > > > Then i need to ... oh boy.
> > > > >
> > > > > And, there is something wrong with a system in which a Glassfish
> > > node
> > > > > performs some specialty algorithm? Hmm - yep, i am too dumb to
> > > > > understand that.
> > > > >
> > > > >
> > >
> ---------------------------------------------------------------------
> > > > -
> > > > > --
> > > > > *From:* Martin, Ray
> > > > > *Sent:* Friday, May 29, 2009 6:22 AM
> > > > > *To:* users_at_glassfish.dev.java.net
> > > > > *Subject:* RE: RE: RE: JNI/CompositeApp/Glassfish
> > > > >
> > > > > i am too dumb to know that was a solution...
> > > > >
> > > > >
> > >
> ---------------------------------------------------------------------
> > > > -
> > > > > --
> > > > > *From:* Markus Karg [mailto:karg_at_quipsy.de]
> > > > > *Sent:* Friday, May 29, 2009 6:14 AM
> > > > > *To:* users_at_glassfish.dev.java.net
> > > > > *Subject:* RE: RE: JNI/CompositeApp/Glassfish
> > > > >
> > > > > The idea of EJB is to have a portable application which runs on
> > any
> > > > > application server on any operating system on any hardware
> > > platform.
> > > > > JNI works only with a particular operating system and hardware
> > > > > platform. These two core ideas are absolutely not compatible. It
> > > just
> > > > > makes no sense to use EJB directly with JNI. If native stuff is
> > > > needed
> > > >
> > > > > in an enterprise application, it has to be provided in the form
> > of
> > > a
> > >
> > > > > JCA 1.5 adapter. This is the official Java EE solution to bind
> > > > > portable applications (EJB) to platform-specific code (JNI).
> What
> > > > > problem do you have with that?
> > > > >
> > > > >
> > > > >
> > > > > *From:* Martin, Ray [mailto:armart3_at_tycho.ncsc.mil]
> > > > > *Sent:* Freitag, 29. Mai 2009 12:08
> > > > > *To:* users_at_glassfish.dev.java.net
> > > > > *Subject:* RE: JNI/CompositeApp/Glassfish
> > > > >
> > > > >
> > > > >
> > > > > Very smart people created JNI.
> > > > >
> > > > > Very smart people created EJB.
> > > > >
> > > > >
> > > > >
> > > > > These very smart people make sure that JNI cannot operate within
> > > EJB
> > > > -
> > > >
> > > > > why would people do something like that?
> > > > >
> > > > >
> > > > >
> > > > > i have fuddled for months building a system around glassfish -
> > now
> > > it
> > > > > looks like i am back to ServiceMix, where i was a year ago
> > > > >
> > > > >
> > > > >
> > > > >
> > >
> ---------------------------------------------------------------------
> > > > -
> > > > > --
> > > > >
> > > > > *From:* Martin, Ray
> > > > > *Sent:* Thursday, May 28, 2009 12:54 PM
> > > > > *To:* users_at_glassfish.dev.java.net
> > > > > *Subject:* JNI/CompositeApp/Glassfish
> > > > >
> > > > > Does anyone have a JNI application running in Glassfish?
> > > > >
> > > > >
> > > > >
> > > > > I have a third party JNI app (Netica). It runs fine from the
> > > command
> > > > > line.
> > > > >
> > > > >
> > > > >
> > > > > i have an EJBModule and a BPEL project added to a composite app.
> > > The
> > > > > composite app is deployed to Glassfish and runs fine - receiving
> > > and
> > >
> > > > > responding to SOAP message.
> > > > >
> > > > >
> > > > >
> > > > > i then add the JNI app to the EJBModule and deploy the composite
> > > app
> > >
> > > > > to Glassfish.
> > > > >
> > > > >
> > > > >
> > > > > there are two SOAP messages to the composite app - setup and
> > > > activate.
> > > > >
> > > > >
> > > > >
> > > > > i issue the setup message - the request and response occur.
> > > > >
> > > > > i issue the activate message - the JNI app runs - all is good -
> > the
> > > > > results are stored in the database.
> > > > >
> > > > > after the JNI app should be completed, the memory usage starts
> to
> > > > climb.
> > > > >
> > > > >
> > > > >
> > > > > any suggestions?
> > > > >
> > > >
> > > >
> > ---------------------------------------------------------------------
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