1 files changed, 92 insertions, 0 deletions
diff --git a/sandbox/old/contrib/implementation-ruby/container/src/main/java/org/apache/tuscany/container/ruby/RubyRefInvocInterceptor.java b/sandbox/old/contrib/implementation-ruby/container/src/main/java/org/apache/tuscany/container/ruby/RubyRefInvocInterceptor.java
new file mode 100644
index 0000000000..bf62d1fcab
--- /dev/null
+++ b/sandbox/old/contrib/implementation-ruby/container/src/main/java/org/apache/tuscany/container/ruby/RubyRefInvocInterceptor.java
@@ -0,0 +1,92 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+
+             http://www.apache.org/licenses/LICENSE-2.0
+
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.     
+ */
+package org.apache.tuscany.container.ruby;
+
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Method;
+
+import org.jruby.IRuby;
+import org.jruby.RubyObject;
+import org.jruby.javasupport.JavaUtil;
+
+/**
+ * This Interceptor encasulates the data mediation required  by the JavaScriptReferenceProxy.  The 
+ * invocation handler of this class traps the javascript reference calls, performs data mediation 
+ * and calls then calls the actual referred service.  This classes implementation is subject to 
+ * review and change when the DataMediation infrastructure of Tuscany is ready.
+ *
+ */
+public class RubyRefInvocInterceptor implements InvocationHandler {
+    private Object actualProxy;
+
+    private Class wireInterface;
+    
+    private IRuby rubyEngine;
+
+    RubyRefInvocInterceptor(Object wireProxy, Class wireIfc, IRuby rubyEng) {
+        this.actualProxy = wireProxy;
+        this.wireInterface = wireIfc;
+        this.rubyEngine = rubyEng;
+    }
+
+    public Object invoke(Object arg0, Method method, Object[] args) throws Throwable {
+        if ( method.getName().equals("hashCode"))
+            return new Integer(1);
+        
+        Method invokedMethod = getInvokedMethod(method.getName());
+        Object[] tranformedArgs = new Object[args.length];
+        for (int count = 0; count < args.length; ++count) {
+            tranformedArgs[count] = fromRubyToJava(invokedMethod.getParameterTypes()[count], args[count]);
+        }
+
+        Object response = invokedMethod.invoke(actualProxy, tranformedArgs);
+        response = fromJavaToRuby(response);
+        return response;
+    }
+
+    private Method getInvokedMethod(String methodName) {
+        Method[] methods = wireInterface.getMethods();
+
+        for (int count = 0; count < methods.length; ++count) {
+            if (methods[count].getName().equals(methodName)) {
+                return methods[count];
+            }
+        }
+        throw new RuntimeException("Unable to find invocation method");
+    }
+
+    protected Object fromRubyToJava(Class reqArgType, Object rubyArg) throws Exception {
+        Object javaArg = null;
+        
+        //for known cases the JRuby runtime handles the conversion before calling the Java objects
+        //so nothing to do.  When it cannot convert it simply passed the instance of RubyObject
+        if ( rubyArg instanceof RubyObject ) {
+            //need to deal with this
+        } else { 
+            javaArg = rubyArg;
+        }
+
+        return javaArg;
+    }
+
+    protected Object fromJavaToRuby(Object retVal) throws RuntimeException {
+        Object rubyRetVal = JavaUtil.convertJavaToRuby(rubyEngine, retVal, retVal.getClass());
+        return rubyRetVal;
+    }
+}