    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.internal.services.assets;
    016
    017    import org.apache.tapestry5.services.assets.CompressionStatus;
    018    import org.apache.tapestry5.services.assets.StreamableResource;
    019
    020    import java.io.IOException;
    021    import java.io.InputStream;
    022    import java.io.OutputStream;
    023
    024    public 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    }