Hi,
Can you describe the use cases you have in mind? It will help us better
understand what you want to achieve.
Are you interested in contributing in this area? I can give some pointers
and thoughts to get you started. The following is based on my on-the-surface
thoughts.
For example, you have a C/C++ DLL which provides some business functions and
you want to use them to implement SCA components.
As the first step, you can even use implementation.java to call JNI and you
just have to write an implementation class like:
@Service(Calculator.class)
public class JNICalculatorImpl implements Calculator {
static {
System.loadLibrary("calculator.dll");
}
public native int method calculate(String op, int n1, int n2);
@Reference
public Add addService;
}
And configure the component as:
<component name="JNICalculatorComponent">
<implementation.java class="calculator.dll"/>
</component>
For the second step, we can try to automate the JNI access as follows:
1) Model the component as implementation.jni:
<component name="JNICalculatorComponent">
<implementation.jni library="calculator.dll"/>
</component>
You also need to provide a componentType file to describe the JNI operations
(Potentially we can introspect the native C++ interface).
<componentType>
<service name="Calculator">
<interface.java interface="calculator.Calculator"/> <!-- This is the
java interface for the JNI functions -->
</service>
<reference name="Add">
<interface.java interface="calculator.Add"/> <!-- This is the java
interface for the JNI functions -->
</service>
</componentType>
Then we can generate the JNICalculatorImpl class as illustrated above to
represent the JNI component using ASM.
Thanks,
Raymond
--------------------------------------------------
From: ""Dietrich, Björn"" <[EMAIL PROTECTED]>
Sent: Wednesday, June 25, 2008 11:45 PM
To: <[email protected]>
Subject: AW: Apache Tuscany doubts
Hi,
We are also looking for native (JNI) binding between Java and C++,
This would be a real cool feature.
Greetings
Björn
-----Ursprüngliche Nachricht-----
Von: Malte Marquarding [mailto:[EMAIL PROTECTED]
Gesendet: Donnerstag, 26. Juni 2008 02:51
An: [email protected]
Betreff: Re: Apache Tuscany doubts
Hi,
Is there a timeline for the java runtime hosting a c++ component? We are
currently evaluating tuscany and need to access c++ components as these
are needed for specialized algorithms.
Cheers,
Malte.
At this point, Tuscany has both Java and C++ for 1). But the java
runtime doesn't support C++ component, and not C++ runtime supports
Java component either. So we have to use different runtimes to host
the C++ and Java components at this point, but it's potentially
possible that the Java runtime will be capable of hosting C++ component.
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