001// Copyright 2011 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
015package org.apache.tapestry5.services.assets;
016
017import org.apache.tapestry5.ioc.Resource;
018import org.apache.tapestry5.ioc.annotations.UsesMappedConfiguration;
019import org.apache.tapestry5.services.Context;
020
021/**
022 * Used to determine the MIME content type for a resource. The service configuration is the first step,
023 * followed by {@link Context#getMimeType(String)}, and then (finally) "application/octet-stream"
024 * as a stop-gap.
025 * <p>
026 * The service configuration maps the file extension (e.g., "png") to its corresponding MIME type (e.g., "image/png");
027 */
028@UsesMappedConfiguration(String.class)
029public interface ContentTypeAnalyzer
030{
031    /**
032     * Analyze the resource to determine its content type.
033     * 
034     * @param resource
035     *            to analyze
036     * @return a MIME content type
037     */
038    String getContentType(Resource resource);
039}