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Apache Axis2 OSGi Integration

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/*
 * Copyright 2004,2005 The Apache Software Foundation.
 *
 * Licensed 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.axis2.osgi;

import org.apache.axis2.AxisFault;
import org.apache.axis2.context.ConfigurationContext;
import org.apache.axis2.transport.http.AxisServlet;

import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;

/**
 * This servlet is used with the association of HttpService.
 * This is the entry point to all requests.
 */
public class OSGiAxisServlet extends AxisServlet {

    private ConfigurationContext configurationContext;

    public OSGiAxisServlet(ConfigurationContext configurationContext) {
        this.configurationContext = configurationContext;
    }

    @Override
    protected ConfigurationContext initConfigContext(ServletConfig config) throws ServletException {
        return configurationContext;
    }

    @Override
    protected void initTransports() throws AxisFault {
        // Not sure if this is correct, but the original OSGiAxisServlet code effectively skipped
        // the invocation of the initTransports method.
    }

    public void init(ServletConfig servletConfig) throws ServletException {
        super.init(servletConfig);
        ServletContext servletContext = servletConfig.getServletContext();
        if (servletContext != null) {
            servletContext.setAttribute(this.getClass().getName(), this);
        }

    }

    @Override
    public void destroy() {
        // Do nothing. This prevents AxisServlet from terminating the configuration context.
        // The configuration context is terminated by OSGiConfigurationContextFactory, and
        // invoking the terminate method twice (potentially concurrently) causes problems.
    }
}