Java example source code file (TransportPipeFactory.java)

This example Java source code file (TransportPipeFactory.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

classloader, clientpipeassemblercontext, notnull, pipe, transportpipefactory, xml

The TransportPipeFactory.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.api.pipe;

import com.sun.istack.internal.NotNull;
import com.sun.istack.internal.Nullable;
import com.sun.xml.internal.ws.api.EndpointAddress;
import com.sun.xml.internal.ws.api.pipe.helper.PipeAdapter;
import com.sun.xml.internal.ws.util.pipe.StandalonePipeAssembler;

import javax.xml.ws.WebServiceException;

/**
 * Factory for transport pipes that enables transport pluggability.
 *
 * <p>
 * At runtime, on the client side, JAX-WS (more specifically the default {@link PipelineAssembler}
 * of JAX-WS client runtime) relies on this factory to create a suitable transport {@link Pipe}
 * that can handle the given {@link EndpointAddress endpoint address}.
 *
 * <p>
 * JAX-WS extensions that provide additional transport support can
 * extend this class and implement the {@link #doCreate} method.
 * They are expected to check the scheme of the endpoint address
 * (and possibly some other settings from bindings), and create
 * their transport pipe implementations accordingly.
 * For example,
 *
 * <pre>
 * class MyTransportPipeFactoryImpl {
 *   Pipe doCreate(...) {
 *     String scheme = address.getURI().getScheme();
 *     if(scheme.equals("foo"))
 *       return new MyTransport(...);
 *     else
 *       return null;
 *   }
 * }
 * </pre>
 *
 * <p>
 * {@link TransportPipeFactory} look-up follows the standard service
 * discovery mechanism, so you need
 * {@code META-INF/services/com.sun.xml.internal.ws.api.pipe.TransportPipeFactory}.
 *
 *
 *
 * <h2>TODO
 * <p>
 * One of the JAX-WS operation mode is supposedly where it doesn't have no WSDL whatsoever.
 * How do we identify the endpoint in such case?
 *
 * @author Kohsuke Kawaguchi
 * @see StandalonePipeAssembler
 */
public abstract class TransportPipeFactory {
    /**
     * Creates a transport {@link Pipe} for the given port, if this factory can do so,
     * or return null.
     *
     * @param context
     *      Object that captures various contextual information
     *      that can be used to determine the pipeline to be assembled.
     *
     * @return
     *      null to indicate that this factory isn't capable of creating a transport
     *      for this port (which causes the caller to search for other {@link TransportPipeFactory}s
     *      that can. Or non-null.
     *
     * @throws WebServiceException
     *      if this factory is capable of creating a transport pipe but some fatal
     *      error prevented it from doing so. This exception will be propagated
     *      back to the user application, and no further {@link TransportPipeFactory}s
     *      are consulted.
     */
    public abstract Pipe doCreate(@NotNull ClientPipeAssemblerContext context);

    /**
     * Locates {@link PipelineAssemblerFactory}s and create
     * a suitable {@link PipelineAssembler}.
     *
     * @param classLoader
     *      used to locate {@code META-INF/servces} files.
     * @return
     *      Always non-null, since we fall back to our default {@link PipelineAssembler}.
     *
     * @deprecated
     *      Use {@link TransportTubeFactory#create(ClassLoader, ClientTubeAssemblerContext)}
     */
    public static Pipe create(@Nullable ClassLoader classLoader, @NotNull ClientPipeAssemblerContext context) {
        return PipeAdapter.adapt(TransportTubeFactory.create(classLoader,context));
    }
}