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Apache CXF example source code file (AbstractCXFServlet.java)

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

Java - Apache CXF tags/keywords

bus, destinationfactory, destinationfactorymanager, hashtable, http, log, logger, request, response, servlet, servletcontroller, servletcontroller, servletexception, servlettransportfactory, servlettransportfactory, string, string, util, weakreference, weakreference

The Apache CXF AbstractCXFServlet.java source code

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.cxf.transport.servlet;

import java.lang.ref.WeakReference;
import java.util.Hashtable;
import java.util.Map;
import java.util.logging.Logger;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.cxf.Bus;
import org.apache.cxf.BusException;
import org.apache.cxf.BusFactory;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.transport.DestinationFactory;
import org.apache.cxf.transport.DestinationFactoryManager;



public abstract class AbstractCXFServlet extends AbstractHTTPServlet {
    
    static final Map<String, WeakReference BUS_MAP = new Hashtable>();
    static final Logger LOG = getLogger();
    
    protected Bus bus;
    protected ServletTransportFactory servletTransportFactory;
    protected ServletController controller;
    
    private boolean disableAddressUpdates;
        
    public static Logger getLogger() {
        return LogUtils.getL7dLogger(AbstractCXFServlet.class);
    }
    
    public ServletController createServletController(ServletConfig servletConfig) {
        ServletController newController =
            new ServletController(servletTransportFactory,
                                  servletConfig,
                                  this.getServletContext(), 
                                  bus);
    
        if (servletConfig.getInitParameter("disable-address-updates") == null) {
            newController.setDisableAddressUpdates(disableAddressUpdates);
        }
        
        return newController;
    }
    
    public void init(ServletConfig servletConfig) throws ServletException {
        super.init(servletConfig);

        try {
            BusFactory.setThreadDefaultBus(null);
    
            String busid = servletConfig.getInitParameter("bus.id");
            if (null != busid) {
                WeakReference<Bus> ref = BUS_MAP.get(busid);
                if (null != ref) {
                    bus = ref.get();
                    BusFactory.setThreadDefaultBus(bus);
                }
            }
            
            loadBus(servletConfig);
                
            if (null != busid) {
                BUS_MAP.put(busid, new WeakReference<Bus>(bus));
            }
        } finally {
            BusFactory.setThreadDefaultBus(null);
        }
    }
    
    public abstract void loadBus(ServletConfig servletConfig) throws ServletException;    
   
    protected DestinationFactory createServletTransportFactory() {
        if (servletTransportFactory == null) {
            servletTransportFactory = new ServletTransportFactory(bus);
        }
        return servletTransportFactory;
    }

    private void registerTransport(DestinationFactory factory, String namespace) {
        bus.getExtension(DestinationFactoryManager.class).registerDestinationFactory(namespace, factory);
    }

    protected void replaceDestinationFactory() {
       
        DestinationFactoryManager dfm = bus.getExtension(DestinationFactoryManager.class); 
        try {
            DestinationFactory df = dfm
                .getDestinationFactory("http://cxf.apache.org/transports/http/configuration");
            if (df instanceof ServletTransportFactory) {
                servletTransportFactory = (ServletTransportFactory)df;
                LOG.info("DESTIONFACTORY_ALREADY_REGISTERED");
                return;
            }
        } catch (BusException e) {
            // why are we throwing a busexception if the DF isn't found?
        }

        
        DestinationFactory factory = createServletTransportFactory();

        for (String s : factory.getTransportIds()) {
            registerTransport(factory, s);
        }
        LOG.info("REPLACED_HTTP_DESTIONFACTORY");
    }

    public ServletController getController() {
        return controller;
    }
    
    public Bus getBus() {
        return bus;
    }
    
    public void destroy() {
        String s = bus.getId();
        BUS_MAP.remove(s);
        bus.shutdown(true);
    }
        
    protected void invoke(HttpServletRequest request, HttpServletResponse response) throws ServletException {
        try {
            BusFactory.setThreadDefaultBus(getBus());
            controller.invoke(request, response);
        } finally {
            BusFactory.setThreadDefaultBus(null);
        }
    }

    // this makes it a bit easier to disable the address 
    // updates when creating servlets programmatically
    public void setDisableAddressUpdates(boolean disableAddressUpdates) {
        this.disableAddressUpdates = disableAddressUpdates;
    }
    
}

Other Apache CXF examples (source code examples)

Here is a short list of links related to this Apache CXF AbstractCXFServlet.java source code file:

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