1 files changed, 59 insertions, 0 deletions
diff --git a/sca-cpp/branches/lightweight-sca/modules/java/org/apache/tuscany/InvocationHandler.java b/sca-cpp/branches/lightweight-sca/modules/java/org/apache/tuscany/InvocationHandler.java
new file mode 100644
index 0000000000..06466fe9fc
--- /dev/null
+++ b/sca-cpp/branches/lightweight-sca/modules/java/org/apache/tuscany/InvocationHandler.java
@@ -0,0 +1,59 @@
+/*
+ * 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;
+
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.lang.reflect.Method;
+import java.lang.reflect.Proxy;
+
+/**
+ * Proxy Invocation handler used to represent SCA component references.
+ */
+class InvocationHandler implements java.lang.reflect.InvocationHandler {
+    final long lambda;
+
+    InvocationHandler(final long lambda) {
+        this.lambda = lambda;
+    }
+
+    /**
+     * Create a proxy for an interface and the lambda function representing
+     * an SCA component reference.
+     */
+    static Object valueOf(final Class<?> iface, final long lambda) {
+        return Proxy.newProxyInstance(iface.getClassLoader(), new Class[]{iface}, new InvocationHandler(lambda));
+    }
+
+    /**
+     * Proxy invocation of a C++ function.
+     */
+    public native Object invoke(final Object proxy, final Method method, final Object[] args) throws Throwable;
+
+    /**
+     * Return the stack trace of an exception.
+     */
+    static String stackTrace(final Throwable e) {
+        final StringWriter sw = new StringWriter();
+        final PrintWriter pw = new PrintWriter(sw);
+        e.printStackTrace(pw);
+        return sw.toString();
+    }
+}