On Thu, Oct 14, 2010 at 8:15 PM, Kevin Raison raison@chatsubo.net wrote:
Thanks for the pointers, David and Alessio. I was able to implement my HTTP client in abcl with the knowledge that you provided. As I move on to the next phase of my project, I have run into another issue that I can't figure out how to solve without coding in java (which I would prefer not to do, if I can help it).
The issue is this: I am trying to build on Apache CXF library, using just its simple interface for defining a soap service. The java pattern is like this:
public interface HelloWorld { String sayHi(String text); }
public class HelloWorldImpl implements HelloWorld { public String sayHi(String text) { return "Hello " + text; } }
import org.apache.cxf.frontend.ServerFactoryBean;
HelloWorldImpl helloWorldImpl = new HelloWorldImpl(); ServerFactoryBean svrFactory = new ServerFactoryBean(); svrFactory.setServiceClass(HelloWorld.class); svrFactory.setAddress("http://localhost:9000/Hello"); svrFactory.setServiceBean(helloWorldImpl); svrFactory.create();
I would like to be able to all of this directly in abcl, meaning code the interface, implementation and serverFactory without using java. I don't see a way to do this with abcl. Several things are unclear to me:
- I can't find a way to specify an interface in abcl; if such a thing
is not possible, all is maybe not lost. Could I do the interface spec in java and the implementation in abcl?
There's currently no way to define a Java interface in ABCL. However, there's a way to implement one (which is not equivalent to the Java way of doing it - it's slower, because it uses reflection). Look at jmake-proxy in java.lisp.
- CLOS classes don't seem to correspond to java classes, so assuming
issue #1 is solved, how would I specify an implementation of the interface in abcl?
There are several ways: a single function manually dispatching on the method name, a Lisp package with a symbol for each method in the interface, a hash map of method name -> closure entries.
- As for the serverFactory: if #1 and #2 are solved, the only piece of
this that isn't clear to me is how to translate
svrFactory.setServiceClass(HelloWorld.class);
to abcl.
(jcall "setServiceClass" svr-factory (jclass "com.whatever.HelloWorld"))
or
(jcall (jmethod "org.apache.cxf.frontend.ServerFactoryBean" "setServiceClass" "java.lang.Class") svr-factory (jclass "com.whatever.HelloWorld"))
Regards, Alessio