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.services.Response;
018    
019    /**
020     * Indicates how the content inside a {@link StreamableResource} is (potentially) compressed.
021     * 
022     * @since 5.3
023     */
024    public enum CompressionStatus
025    {
026        /**
027         * The content may be compressed but has not yet been compressed. This is true for most text-oriented content types,
028         * but not found most image content types.
029         */
030        COMPRESSABLE,
031    
032        /**
033         * The content has been compressed, which must be reflected in the {@link Response}'s content encoding.
034         */
035        COMPRESSED,
036    
037        /**
038         * The content is not compressable. This is usually the case for image content types, where the native format
039         * of the content already includes compression.
040         */
041        NOT_COMPRESSABLE;
042    }