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.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     */
027    public 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    }