1 /** 2 * Copyright (C) 2008 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package com.google.inject.servlet; 17 18 import com.google.inject.ImplementedBy; 19 20 import java.io.IOException; 21 22 import javax.servlet.FilterChain; 23 import javax.servlet.ServletContext; 24 import javax.servlet.ServletException; 25 import javax.servlet.ServletRequest; 26 import javax.servlet.ServletResponse; 27 28 /** 29 * An internal dispatcher for guice-servlet registered servlets and filters. 30 * By default, we assume a Guice 1.0 style servlet module is in play. In other 31 * words, we dispatch directly to the web.xml pipeline after setting up scopes. 32 * 33 * <p> 34 * If on the other hand, {@link ServletModule} is used to register managed 35 * servlets and/or filters, then a different pipeline is bound instead. Which, 36 * after dispatching to Guice-injected filters and servlets continues to the web.xml 37 * pipeline (if necessary). 38 * 39 * @author dhanji (at) gmail.com (Dhanji R. Prasanna) 40 */ 41 @ImplementedBy(DefaultFilterPipeline.class) 42 interface FilterPipeline { 43 void initPipeline(ServletContext context) throws ServletException; 44 void destroyPipeline(); 45 46 void dispatch(ServletRequest request, ServletResponse response, 47 FilterChain defaultFilterChain) throws IOException, ServletException; 48 } 49
