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/*
 * Copyright (c) 1997, 2022 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0, which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

package com.sun.xml.ws.server.sei;

import com.oracle.webservices.api.databinding.JavaCallInfo;
import com.sun.istack.NotNull;
import com.sun.xml.ws.api.WSBinding;
import com.sun.xml.ws.api.message.Message;
import com.sun.xml.ws.api.message.Packet;
import com.sun.xml.ws.api.pipe.NextAction;
import com.sun.xml.ws.api.server.Invoker;
import com.sun.xml.ws.client.sei.MethodHandler;
import com.sun.xml.ws.model.AbstractSEIModelImpl;
import com.sun.xml.ws.server.InvokerTube;
import com.sun.xml.ws.wsdl.DispatchException;
import java.lang.reflect.InvocationTargetException;

/**
 * This pipe is used to invoke SEI based endpoints.
 *
 * @author Jitendra Kotamraju
 */
public class SEIInvokerTube extends InvokerTube {

    /**
     * For each method on the port interface we have
     * a {@link MethodHandler} that processes it.
     */
    private final WSBinding binding;
    private final AbstractSEIModelImpl model;

    public SEIInvokerTube(AbstractSEIModelImpl model,Invoker invoker, WSBinding binding) {
        super(invoker);
        this.binding = binding;
        this.model = model;
    }

    /**
     * This binds the parameters for SEI endpoints and invokes the endpoint method. The
     * return value, and response Holder arguments are used to create a new {@link Message}
     * that traverses through the Pipeline to transport.
     */
    @Override
    public @NotNull NextAction processRequest(@NotNull Packet req) {
        	JavaCallInfo call = model.getDatabinding().deserializeRequest(req);
        	if (call.getException() == null) {
	        	try {
	        		if (req.getMessage().isOneWay(model.getPort()) && req.transportBackChannel != null) {
	        			req.transportBackChannel.close();
	        		}
	        		Object ret = getInvoker(req).invoke(req, call.getMethod(), call.getParameters());
	        		call.setReturnValue(ret);
				} catch (Exception e) {
					call.setException(e);
				}
            } else if (call.getException() instanceof DispatchException) {
			    DispatchException e = (DispatchException)call.getException();
			    return doReturnWith(req.createServerResponse(e.fault, model.getPort(), null, binding));
			}
                        Packet res = (Packet) model.getDatabinding().serializeResponse(call);        	
			res = req.relateServerResponse(res, req.endpoint.getPort(), model, req.endpoint.getBinding());
            assert res != null;
            return doReturnWith(res);
    }

    @Override
    public @NotNull NextAction processResponse(@NotNull Packet response) {
        return doReturnWith(response);
    }

    @Override
    public @NotNull NextAction processException(@NotNull Throwable t) {
        return doThrow(t);
    }

}