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.services.javascript.JavaScriptStack;
019
020/**
021 * Defines additional features desired when accessing the content of a {@link Resource} as
022 * a {@link StreamableResource}.
023 *
024 * @see StreamableResourceSource
025 * @since 5.3
026 */
027public enum StreamableResourceProcessing
028{
029    /**
030     * The default behavior when the client supports compression, and an individual (non-aggregated) resources
031     * is being accessed. The resource may be minimized and both the compressed and uncompressed versions may be cached.
032     */
033    COMPRESSION_ENABLED,
034
035    /**
036     * As with {@link #COMPRESSION_ENABLED}, but the final compression stage (and compression cache) is skipped. This is
037     * appropriate
038     * for individual resources where the client does not support compression.
039     */
040    COMPRESSION_DISABLED,
041
042    /**
043     * Turns off all caching and minification of the resource, which is appropriate when the individual resource will be
044     * aggregated with other resources to form a virtual composite.
045     *
046     * @see JavaScriptStack
047     */
048    FOR_AGGREGATION
049}