001 /****************************************************************
002 * Licensed to the Apache Software Foundation (ASF) under one *
003 * or more contributor license agreements. See the NOTICE file *
004 * distributed with this work for additional information *
005 * regarding copyright ownership. The ASF licenses this file *
006 * to you under the Apache License, Version 2.0 (the *
007 * "License"); you may not use this file except in compliance *
008 * with the License. You may obtain a copy of the License at *
009 * *
010 * http://www.apache.org/licenses/LICENSE-2.0 *
011 * *
012 * Unless required by applicable law or agreed to in writing, *
013 * software distributed under the License is distributed on an *
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY *
015 * KIND, either express or implied. See the License for the *
016 * specific language governing permissions and limitations *
017 * under the License. *
018 ****************************************************************/
019
020
021
022 package org.apache.james.repository.file;
023
024 import java.io.BufferedOutputStream;
025 import java.io.IOException;
026 import java.io.InputStream;
027 import java.io.OutputStream;
028
029 import org.apache.james.repository.api.StreamRepository;
030
031 /**
032 * Implementation of a StreamRepository to a File.<br>
033 * TODO: -retieve(String key) should return a FilterInputStream to allow
034 * mark and reset methods. (working not like BufferedInputStream!!!)
035 */
036 public class FilePersistentStreamRepository
037 extends AbstractFileRepository
038 implements StreamRepository
039 {
040
041 /**
042 * @see org.apache.james.repository.file.AbstractFileRepository#getExtensionDecorator()
043 */
044 protected String getExtensionDecorator()
045 {
046 return ".FileStreamStore";
047 }
048
049
050 /**
051 * @see org.apache.james.repository.api.StreamRepository#get(java.lang.String)
052 */
053 public synchronized InputStream get( final String key )
054 {
055 try
056 {
057 return getInputStream( key );
058 }
059 catch( final IOException ioe )
060 {
061 final String message = "Exception caught while retrieving a stream ";
062 getLogger().warn( message, ioe );
063 throw new RuntimeException( message + ": " + ioe );
064 }
065 }
066
067
068 /**
069 * @see org.apache.james.repository.api.StreamRepository#put(java.lang.String)
070 */
071 public synchronized OutputStream put( final String key )
072 {
073 try
074 {
075 final OutputStream outputStream = getOutputStream( key );
076 return new BufferedOutputStream( outputStream );
077 }
078 catch( final IOException ioe )
079 {
080 final String message = "Exception caught while storing a stream ";
081 getLogger().warn( message, ioe );
082 throw new RuntimeException( message + ": " + ioe );
083 }
084 }
085
086 /**
087 * Return the size of the file which belongs to the given key
088 *
089 * @param key the key to get the size for
090 * @return size the Size which belongs to the givens keys file
091 */
092 public long getSize(final String key) {
093 try {
094 return getFile(key).length();
095 }
096 catch(IOException e) {
097 return 0;
098 }
099 }
100 }