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.annotations.UsesMappedConfiguration; 018 019/** 020 * Identifies which content types are compressable. In general, content types are assumed to be compressable. The 021 * configuration of the service identifies exceptions, which are usually image file formats. 022 * <p> 023 * The configuration maps content types to boolean values (true for compressable). 024 * 025 * @since 5.3 026 */ 027@UsesMappedConfiguration(boolean.class) 028public interface CompressionAnalyzer 029{ 030 /** 031 * For a given MIME type, is the content compressable via GZip? 032 * 033 * @param contentType 034 * MIME content type, possibly included attributes such as encoding type 035 * @return true if the content is not "naturally" compressed 036 */ 037 boolean isCompressable(String contentType); 038}