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    
015    package org.apache.tapestry5.services.assets;
016    
017    import org.apache.tapestry5.ioc.Resource;
018    import org.apache.tapestry5.ioc.annotations.UsesMappedConfiguration;
019    import 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)
029    public 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    }