001    // Copyright 2006, 2008 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry5.services;
016    
017    import org.apache.tapestry5.ioc.annotations.UsesOrderedConfiguration;
018    
019    import javax.servlet.http.HttpServletRequest;
020    import javax.servlet.http.HttpServletResponse;
021    import java.io.IOException;
022    
023    /**
024     * The first step in handing an incoming request to the {@linkplain org.apache.tapestry5.TapestryFilter servlet filter},
025     * this constructed as a {@linkplain org.apache.tapestry5.ioc.services.PipelineBuilder pipeline}.  The main
026     * implementation hands off to the {@link org.apache.tapestry5.services.RequestHandler} service.
027     */
028    @UsesOrderedConfiguration(HttpServletRequestFilter.class)
029    public interface HttpServletRequestHandler
030    {
031        /**
032         * Returns true if the request was handled, false otherwise.
033         */
034        boolean service(HttpServletRequest request, HttpServletResponse response) throws IOException;
035    }