Well, I have mucked around such APIs with JNI a couple of times, and what I
would do is something like this:
In java:
public class DropsJNI
{
public native long drops_new(String directory);
public native void drops_destroy(long self);
}
What this is doing is providing a really shallow JNI interface to your C API,
using longs to store pointers. You really want this in order to simplify all
the JNI rigmarole.
You can then provide a higher-level, pure Java class “Drops” that uses
“DropsJNI” to implement whatever abstraction you wish to implement. This class
could have a private member of type “DropsJNI” to call your JNI shim, and a
private member of type “long” to store the “self” pointer returned by
drops_new. That seems to be all the context you need to handle.
In other words, keep things as simple as possible.
Does this help? Good luck,
--
Gonzalo Diethelm
DCV Chile
From: [email protected]
[mailto:[email protected]] On Behalf Of shancat
Sent: Monday, November 18, 2013 3:45 PM
To: ZeroMQ development list
Subject: Re: [zeromq-dev] Wrapping a C API in JNI?
struct drops_t {
void *pipe;
zctx_t *ctx;
};
drops_t * drops_new (const char *directory);
void drops_destroy (drops_t **self_p);
The main problem is that I don't know the proper way to manage the drops_t
struct
On Nov 19, 2013 5:38 AM, "gonzalo diethelm"
<[email protected]<mailto:[email protected]>> wrote:
Hi Shannen,
If you can post here a brief overview of the C API, I can give you a couple of
hints.
Regards,
--
Gonzalo Diethelm
DCV Chile
From:
[email protected]<mailto:[email protected]>
[mailto:[email protected]<mailto:[email protected]>]
On Behalf Of shancat
Sent: Monday, November 18, 2013 3:32 PM
To: ZeroMQ development list
Subject: [zeromq-dev] Wrapping a C API in JNI?
I'm working with Pieter on a ZeroMQ related free-software project and
could use some help. We need to wrap up the (simple) C API in JNI.
The project can be viewed at https://github.com/edgenet/drops
I don't "know" JNI so I'm getting quite stuck and any help is
appreciated :)
- Shannen
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