Calling DLL in Webdynpro

[Former Member]

Hello Everybody,

Can we take use of DLLs in webdynpro?

I have some functionality embedded in DLL and wants to take use of that functionality. Is there any procedure to take use of?

Waiting for reply.

Thanks in advance,

Bhavik

[former_member182372 · Accepted solution]

Hello Bhavik,

To use DLL from Java you need Java Native Interface(JNI). Check appropriate tutorial http://java.sun.com/docs/books/tutorial/native1.1/

and

http://bdn.borland.com/article/0,1410,20679,00.html

...

http://www.google.com/search?hl=en&q=howtousedllinjava&btnG=GoogleSearch

Best regards, Maksim Rashchynski.

[Former Member · Accepted solution]

Hi Maksim,

thanks for your reply.

I am thinking with this thing only.

But, is there anything else?

Is there any method to declare that Dll as API and take use of that api etc?

Thanks,

Bhavik

[Former Member · Accepted solution]

<i>But, is there anything else?

Is there any method to declare that Dll as API and take use of that api etc?</i>

Nothing. JNI is the only way. At least, it is the simplest one: more complex but correct in J2EE environment is to wrap functionality as Resource Adapter.

If your DLL is a COM library, then you probably may use some Java toolkits that create wrappers automatically for you (but it will be still JNI underneath).

It seems you are really missing MS-only J++ features

Valery Silaev

EPAM Systems

http://www.NetWeaverTeam.com

[Former Member · Accepted solution]

Hi Valery,

Thanks for reply.

What is the procedure to create java wrappers for DLL COM library?

Regards,

Bhavik

[Former Member · Accepted solution]

This is specific by toolkit used.

However, the sequence is almost the same for all of them:

1. Generate wrappers sources via some supplied wizard (can output Java or Java and C/C++ code)

2. Compile Java sources

3. Build helper dlls (from C/C++ sources)

4. Use

http://www.google.com/search?q=JavaCOMbridge

VS