--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jaxws/src/share/jaxws_classes/javax/xml/ws/spi/Invoker.java	Tue Mar 06 16:09:35 2012 -0800
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package javax.xml.ws.spi;
+
+import javax.xml.ws.WebServiceContext;
+import javax.xml.ws.WebServiceFeature;
+import java.lang.reflect.Method;
+import java.lang.reflect.InvocationTargetException;
+
+/**
+ * Invoker hides the detail of calling into application endpoint
+ * implementation. Container hands over an implementation of Invoker
+ * to JAX-WS runtime, and jax-ws runtime calls {@link #invoke}
+ * for a web service invocation. Finally, Invoker does the actual
+ * invocation of web service on endpoint instance.
+ *
+ * Container also injects the provided <code>WebServiceContext</code> and takes
+ * care of invoking <code>javax.annotation.PostConstruct</code> methods,
+ * if present, on the endpoint implementation.
+ *
+ * @see Provider#createEndpoint(String, Class, Invoker, WebServiceFeature...)
+ * @author Jitendra Kotamraju
+ * @since JAX-WS 2.2
+ */
+
+public abstract class Invoker {
+
+    /**
+     * JAX-WS runtimes calls this method to ask container to inject
+     * WebServiceContext on the endpoint instance. The
+     * <code>WebServiceContext</code> object uses thread-local information
+     * to return the correct information during the actual endpoint invocation
+     * regardless of how many threads are concurrently being used to serve
+     * requests.
+     *
+     * @param webServiceContext a holder for MessageContext
+     * @throws IllegalAccessException if the injection done
+     *         by reflection API throws this exception
+     * @throws IllegalArgumentException if the injection done
+     *         by reflection API throws this exception
+     * @throws InvocationTargetException if the injection done
+     *         by reflection API throws this exception
+     */
+    public abstract void inject(WebServiceContext webServiceContext)
+    throws IllegalAccessException, IllegalArgumentException, InvocationTargetException;
+
+    /**
+     * JAX-WS runtime calls this method to do the actual web service
+     * invocation on endpoint instance. The injected
+     * <code>WebServiceContext.getMessageContext()</code> gives the correct
+     * information for this invocation.
+     *
+     * @param m Method to be invoked on the service
+     * @param args Method arguments
+     * @return return value of the method
+     * @throws IllegalAccessException if the invocation done
+     *         by reflection API throws this exception
+     * @throws IllegalArgumentException if the invocation done
+     *         by reflection API throws this exception
+     * @throws InvocationTargetException if the invocation done
+     *         by reflection API throws this exception
+
+     * @see Method#invoke
+     */
+    public abstract Object invoke(Method m, Object... args)
+    throws  IllegalAccessException, IllegalArgumentException, InvocationTargetException;
+
+}