/*
 * 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
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package com.sun.xml.internal.ws.client.sei;

import com.oracle.webservices.internal.api.databinding.JavaCallInfo;
import com.sun.xml.internal.ws.api.message.Message;
import com.sun.xml.internal.ws.api.message.Packet;
import com.sun.xml.internal.ws.client.RequestContext;
import com.sun.xml.internal.ws.client.ResponseContextReceiver;
import com.sun.xml.internal.ws.encoding.soap.DeserializationException;
import com.sun.xml.internal.ws.message.jaxb.JAXBMessage;

import javax.xml.bind.JAXBException;
import javax.xml.stream.XMLStreamException;
import javax.xml.ws.Holder;

import java.lang.reflect.Method;

/**
 * {@link MethodHandler} that handles synchronous method invocations.
 *
 * <p>
 * This class mainly performs the following two tasks:
 * <ol>
 *  <li>Accepts Object[] that represents arguments for a Java method,
 *      and creates {@link JAXBMessage} that represents a request message.
 *  <li>Takes a {@link Message] that represents a response,
 *      and extracts the return value (and updates {@link Holder}s.)
 * </ol>
 *
 * <h2>Creating {@link JAXBMessage}</h2>
 * <p>
 * At the construction time, we prepare {@link BodyBuilder} and {@link MessageFiller}s
 * that know how to move arguments into a {@link Message}.
 * Some arguments go to the payload, some go to headers, still others go to attachments.
 *
 * @author Kohsuke Kawaguchi
 */
final class SyncMethodHandler extends MethodHandler {
//    private ResponseBuilder responseBuilder;

    SyncMethodHandler(SEIStub owner, Method m) {
        super(owner, m);
//        responseBuilder = buildResponseBuilder(method, ValueSetterFactory.SYNC);
    }

//    SyncMethodHandler(SEIStub owner, JavaMethodImpl method) {
//        super(owner, method);
//        responseBuilder = buildResponseBuilder(method, ValueSetterFactory.SYNC);
//    }

    Object invoke(Object proxy, Object[] args) throws Throwable {
        return invoke(proxy,args,owner.requestContext,owner);
    }

    /**
     * Invokes synchronously, but with the given {@link RequestContext}
     * and {@link ResponseContextReceiver}.
     *
     * @param rc
     *      This {@link RequestContext} is used for invoking this method.
     *      We take this as a separate parameter because of the async invocation
     *      handling, which requires a separate copy.
     */
    Object invoke(Object proxy, Object[] args, RequestContext rc, ResponseContextReceiver receiver) throws Throwable {
        JavaCallInfo call = owner.databinding.createJavaCallInfo(method, args);
//      Packet req = new Packet(createRequestMessage(args));
        Packet req = (Packet) owner.databinding.serializeRequest(call);
        // process the message
        Packet reply = owner.doProcess(req,rc,receiver);

        Message msg = reply.getMessage();
        if(msg ==null)
            // no reply. must have been one-way
            return null;

        try {
//              return dbHandler.readResponse(reply, call).getReturnValue();
            call = owner.databinding.deserializeResponse(reply, call);
            if (call.getException() != null) {
                throw call.getException();
            } else {
                return call.getReturnValue();
            }
//            if(msg.isFault()) {
//                SOAPFaultBuilder faultBuilder = SOAPFaultBuilder.create(msg);
//                throw faultBuilder.createException(checkedExceptions);
//            } else {
//                return responseBuilder.readResponse(msg,args);
//            }
        } catch (JAXBException e) {
            throw new DeserializationException("failed.to.read.response",e);
        } catch (XMLStreamException e) {
            throw new DeserializationException("failed.to.read.response",e);
        } finally {
                if (reply.transportBackChannel != null)
                        reply.transportBackChannel.close();
        }
    }

    ValueGetterFactory getValueGetterFactory() {
        return ValueGetterFactory.SYNC;
    }

}