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.internal.services.assets;
016
017import org.apache.tapestry5.services.assets.CompressionStatus;
018import org.apache.tapestry5.services.assets.StreamableResource;
019
020import java.io.IOException;
021import java.io.InputStream;
022import java.io.OutputStream;
023
024public class StreamableResourceImpl implements StreamableResource
025{
026    private final String description;
027
028    private final String contentType;
029
030    private final CompressionStatus compression;
031
032    private final long lastModified;
033
034    private final BytestreamCache bytestreamCache;
035
036    public StreamableResourceImpl(String description, String contentType, CompressionStatus compression, long lastModified,
037                                  BytestreamCache bytestreamCache)
038    {
039        this.description = description;
040        this.contentType = contentType;
041        this.compression = compression;
042        this.lastModified = lastModified;
043        this.bytestreamCache = bytestreamCache;
044    }
045
046    public String getDescription()
047    {
048        return description;
049    }
050
051    public CompressionStatus getCompression()
052    {
053        return compression;
054    }
055
056    public String getContentType()
057    {
058        return contentType;
059    }
060
061    public int getSize()
062    {
063        return bytestreamCache.size();
064    }
065
066    public long getLastModified()
067    {
068        return lastModified;
069    }
070
071    public void streamTo(OutputStream os) throws IOException
072    {
073        bytestreamCache.writeTo(os);
074    }
075
076    public InputStream openStream() throws IOException
077    {
078        return bytestreamCache.openStream();
079    }
080
081    @Override
082    public String toString()
083    {
084        return String.format("StreamableResource<%s %s %s lastModified: %tc size: %d>", contentType, description, compression.name(),
085                lastModified, getSize());
086    }
087}