On Tue, Oct 12, 2010 at 10:18 PM, David Kirkman dkirkman@ucsd.edu wrote:

I don't have httpcomponents, so this is not tested ...

But your problem is probably that (jmethod client-class "execute") is looking for a zero argument execute method, and the class does not have one.  Based on the api docs (and your attempted method call), I think you want

(jmethod client-class "execute" "org.apache.http.client.methods.HttpUriRequest")

Or if you don't mind paying a certain runtime penalty on each invocation, you can use the shorter (jcall "execute" client-obj get-obj) and let ABCL figure out the exact method to call. Also you can use url directly if it's a Lisp string because ABCL will convert it to a Java string automatically when you pass it to a Java method.

hth, Alessio

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:

1. 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.

2. 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.

3. 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