001// Copyright 2012 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.internal.services.assets;
016
017import org.apache.tapestry5.ContentType;
018import org.apache.tapestry5.ioc.Resource;
019import org.apache.tapestry5.services.assets.ResourceDependencies;
020import org.apache.tapestry5.services.assets.StreamableResource;
021import org.apache.tapestry5.services.assets.StreamableResourceProcessing;
022import org.apache.tapestry5.services.assets.StreamableResourceSource;
023
024import java.io.IOException;
025import java.util.Set;
026
027/**
028 * Base class for {@link StreamableResourceSource} implementations.
029 *
030 * @since 5.4
031 */
032public abstract class DelegatingSRS implements StreamableResourceSource
033{
034    protected final StreamableResourceSource delegate;
035
036    protected DelegatingSRS(StreamableResourceSource delegate)
037    {
038        this.delegate = delegate;
039    }
040
041    public Set<String> fileExtensionsForContentType(ContentType contentType)
042    {
043        return delegate.fileExtensionsForContentType(contentType);
044    }
045
046    public StreamableResource getStreamableResource(Resource baseResource, StreamableResourceProcessing processing, ResourceDependencies dependencies) throws IOException
047    {
048        return delegate.getStreamableResource(baseResource, processing, dependencies);
049    }
050}