    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.commons.Resource;
    018import org.apache.tapestry5.http.ContentType;
    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}