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Java example source code file (AsyncMethodHandler.java)

This example Java source code file (AsyncMethodHandler.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

asynchandler, asyncmethodhandler, asyncresponseimpl, javacallinfo, message, object, packet, reflection, requestcontext, responsecontext, runtimeexception, seiasyncinvoker, throwable, valuegetterfactory, webserviceexception, xml

The AsyncMethodHandler.java Java example source code

/*
 * Copyright (c) 1997, 2012, 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 com.sun.xml.internal.ws.client.sei;

//import com.sun.tools.internal.ws.wsdl.document.soap.SOAPBinding;

import com.oracle.webservices.internal.api.databinding.JavaCallInfo;
import com.sun.istack.internal.NotNull;
import com.sun.xml.internal.ws.api.message.Message;
import com.sun.xml.internal.ws.api.message.Packet;
import com.sun.xml.internal.ws.api.pipe.Fiber;
import com.sun.xml.internal.ws.client.AsyncInvoker;
import com.sun.xml.internal.ws.client.AsyncResponseImpl;
import com.sun.xml.internal.ws.client.RequestContext;
import com.sun.xml.internal.ws.client.ResponseContext;

import javax.xml.ws.AsyncHandler;
import javax.xml.ws.Response;
import javax.xml.ws.WebServiceException;

import java.lang.reflect.Method;

/**
 * Common part between {@link CallbackMethodHandler} and {@link PollingMethodHandler}.
 *
 * @author Kohsuke Kawaguchi
 * @author Jitendra Kotamraju
 */
abstract class AsyncMethodHandler extends MethodHandler {

    AsyncMethodHandler(SEIStub owner, Method m) {
        super(owner, m);
    }

//    private final ResponseBuilder responseBuilder;
//    /**
//     * Async bean class that has setters for all out parameters
//     */
//    private final @Nullable Class asyncBeanClass;
//
//    AsyncMethodHandler(SEIStub owner, JavaMethodImpl jm, JavaMethodImpl sync) {
//        super(owner, sync);
//
//        List<ParameterImpl> rp = sync.getResponseParameters();
//        int size = 0;
//        for( ParameterImpl param : rp ) {
//            if (param.isWrapperStyle()) {
//                WrapperParameter wrapParam = (WrapperParameter)param;
//                size += wrapParam.getWrapperChildren().size();
//                if (sync.getBinding().getStyle() == Style.DOCUMENT) {
//                    // doc/asyncBeanClass - asyncBeanClass bean is in async signature
//                    // Add 2 or more so that it is considered as async bean case
//                    size += 2;
//                }
//            } else {
//                ++size;
//            }
//        }
//
//        Class tempWrap = null;
//        if (size > 1) {
//            rp = jm.getResponseParameters();
//            for(ParameterImpl param : rp) {
//                if (param.isWrapperStyle()) {
//                    WrapperParameter wrapParam = (WrapperParameter)param;
//                    if (sync.getBinding().getStyle() == Style.DOCUMENT) {
//                        // doc/asyncBeanClass style
//                        tempWrap = (Class)wrapParam.getTypeReference().type;
//                        break;
//                    }
//                    for(ParameterImpl p : wrapParam.getWrapperChildren()) {
//                        if (p.getIndex() == -1) {
//                            tempWrap = (Class)p.getTypeReference().type;
//                            break;
//                        }
//                    }
//                    if (tempWrap != null) {
//                        break;
//                    }
//                } else {
//                    if (param.getIndex() == -1) {
//                        tempWrap = (Class)param.getTypeReference().type;
//                        break;
//                    }
//                }
//            }
//        }
//        asyncBeanClass = tempWrap;
//
//        switch(size) {
//            case 0 :
//                responseBuilder = buildResponseBuilder(sync, ValueSetterFactory.NONE);
//                break;
//            case 1 :
//                responseBuilder = buildResponseBuilder(sync, ValueSetterFactory.SINGLE);
//                break;
//            default :
//                responseBuilder = buildResponseBuilder(sync, new ValueSetterFactory.AsyncBeanValueSetterFactory(asyncBeanClass));
//        }
//
//    }

    protected final Response<Object> doInvoke(Object proxy, Object[] args, AsyncHandler handler) {

        AsyncInvoker invoker = new SEIAsyncInvoker(proxy, args);
        invoker.setNonNullAsyncHandlerGiven(handler != null);
        AsyncResponseImpl<Object> ft = new AsyncResponseImpl(invoker,handler);
        invoker.setReceiver(ft);
        ft.run();
        return ft;
    }

    private class SEIAsyncInvoker extends AsyncInvoker {
        // snapshot the context now. this is necessary to avoid concurrency issue,
        // and is required by the spec
        private final RequestContext rc = owner.requestContext.copy();
        private final Object[] args;

        SEIAsyncInvoker(Object proxy, Object[] args) {
            this.args = args;
        }

        public void do_run () {
                JavaCallInfo call = owner.databinding.createJavaCallInfo(method, args);
            Packet req = (Packet)owner.databinding.serializeRequest(call);

            Fiber.CompletionCallback callback = new Fiber.CompletionCallback() {

                public void onCompletion(@NotNull Packet response) {
                    responseImpl.setResponseContext(new ResponseContext(response));
                    Message msg = response.getMessage();
                    if (msg == null) {
                        return;
                    }
                    try {
                        Object[] rargs = new Object[1];
                        JavaCallInfo call = owner.databinding.createJavaCallInfo(method, rargs);
                        call = owner.databinding.deserializeResponse(response, call);
                        if (call.getException() != null) {
                            throw call.getException();
                        } else {
                            responseImpl.set(rargs[0], null);
                        }
//                      dbHandler.readResponse(response, call);
//                      responseImpl.set(rargs[0], null);
//                        if(msg.isFault()) {
//                            SOAPFaultBuilder faultBuilder = SOAPFaultBuilder.create(msg);
//                            throw faultBuilder.createException(checkedExceptions);
//                        } else {
//                            Object[] rargs = new Object[1];
//                            if (asyncBeanClass != null) {
//                                rargs[0] = asyncBeanClass.newInstance();
//                            }
//                            responseBuilder.readResponse(msg, rargs);
//                            responseImpl.set(rargs[0], null);
//                        }
                   } catch (Throwable t) {
                        if (t instanceof RuntimeException) {
                            if (t instanceof WebServiceException) {
                                responseImpl.set(null, t);
                                return;
                            }
                        }  else if (t instanceof Exception) {
                            responseImpl.set(null, t);
                            return;
                        }
                        //its RuntimeException or some other exception resulting from user error, wrap it in
                        // WebServiceException
                        responseImpl.set(null, new WebServiceException(t));
                    }
                }


                public void onCompletion(@NotNull Throwable error) {
                    if (error instanceof WebServiceException) {
                        responseImpl.set(null, error);
                    } else {
                        //its RuntimeException or some other exception resulting from user error, wrap it in
                        // WebServiceException
                        responseImpl.set(null, new WebServiceException(error));
                    }
                }
            };
            owner.doProcessAsync(responseImpl, req, rc, callback);
        }
    }

    ValueGetterFactory getValueGetterFactory() {
        return ValueGetterFactory.ASYNC;
    }

}




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