com.cpuz.filters.Spring2.java Source code

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Here is the source code for com.cpuz.filters.Spring2.java

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/*
 * Copyright 2012 Rafael Ferruz
 * 
 * This file is part of CPUZ.
 * 
 * CPUZ is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * CPUZ 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 for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with CPUZ.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.cpuz.filters;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * Filtro para creacin de un contenedor Spring
 * 
 */
public class Spring2 implements Filter {

    // The filter configuration object we are associated with.  If
    // this value is null, this filter instance is not currently
    // configured. 
    private FilterConfig filterConfig = null;

    public Spring2() {
    }

    private void doBeforeProcessing(ServletRequest request, ServletResponse response)
            throws IOException, ServletException {
    }

    private void doAfterProcessing(ServletRequest request, ServletResponse response)
            throws IOException, ServletException {
    }

    /**
     *
     * @param request The servlet request we are processing
     * @param response The servlet response we are creating
     * @param chain The filter chain we are processing
     *
     * @exception IOException if an input/output error occurs
     * @exception ServletException if a servlet error occurs
     */
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws IOException, ServletException {

        doBeforeProcessing(request, response);

        /* Si no existe un atriubuto de aplicacin 'springServicesContext', se crea un objeto
         * ApplicationContext con ese nombre y se guarda en el mbito de la aplicacin.
         */
        if (filterConfig.getServletContext().getAttribute("springServicesContext") == null) {
            ApplicationContext springServicesContext = new ClassPathXmlApplicationContext(
                    "springServicesContext.xml");
            filterConfig.getServletContext().setAttribute("springServicesContext", springServicesContext);
        }

        chain.doFilter(request, response);

        doAfterProcessing(request, response);

    }

    /**
     * Return the filter configuration object for this filter.
     */
    public FilterConfig getFilterConfig() {
        return (this.filterConfig);
    }

    /**
     * Set the filter configuration object for this filter.
     *
     * @param filterConfig The filter configuration object
     */
    public void setFilterConfig(FilterConfig filterConfig) {
        this.filterConfig = filterConfig;
    }

    /**
     * Destoy method for this filter 
     */
    public void destroy() {
    }

    /**
     * Init method for this filter 
     */
    public void init(FilterConfig filterConfig) {
        this.filterConfig = filterConfig;
    }

}