/*
* Copyright (C) 2011-2013 Mojavemvc.org
*
* 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.mojavemvc;
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 javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.mojavemvc.core.HttpMethod;
import org.mojavemvc.core.MojaveFramework;
/**
* The RequestFilter uses the Mojave framework to handle
* requests. Either this filter or the {@link FrontController} servlet must
* be used in a Mojave Web MVC application, but not both. This filter
* does <b>not</b> call the next filter in the filter chain.
*
* @author Luis Antunes
*/
public class RequestFilter implements Filter {
private MojaveFramework framework;
@Override
public void init(FilterConfig filterConfig) throws ServletException {
framework = new MojaveFramework();
framework.init(filterConfig);
}
@Override
public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain)
throws IOException, ServletException {
HttpServletRequest servletReq = (HttpServletRequest) req;
HttpServletResponse servletRes = (HttpServletResponse) res;
HttpMethod httpMethod = getHttpMethod(servletReq);
framework.handleRequest(servletReq, servletRes, httpMethod,
servletReq.getServletPath());
}
private HttpMethod getHttpMethod(HttpServletRequest req) {
if (req.getMethod().equalsIgnoreCase("GET")) {
return HttpMethod.GET;
} else if (req.getMethod().equalsIgnoreCase("POST")) {
return HttpMethod.POST;
} else if (req.getMethod().equalsIgnoreCase("PUT")) {
return HttpMethod.PUT;
} else if (req.getMethod().equalsIgnoreCase("DELETE")) {
return HttpMethod.DELETE;
} else if (req.getMethod().equalsIgnoreCase("HEAD")) {
return HttpMethod.HEAD;
} else if (req.getMethod().equalsIgnoreCase("OPTIONS")) {
return HttpMethod.OPTIONS;
} else if (req.getMethod().equalsIgnoreCase("TRACE")) {
return HttpMethod.TRACE;
}
throw new RuntimeException("unknown or unsupported " +
"request method: " + req.getMethod());
}
@Override
public void destroy() {
}
}