1 /**
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.creadur.whisker.app.load;
20
21 import java.io.BufferedInputStream;
22 import java.io.File;
23 import java.io.FileInputStream;
24 import java.io.IOException;
25 import java.io.InputStream;
26
27 import org.apache.creadur.whisker.app.StreamableResource;
28 /**
29 * Streams, on demand, the contents of a file identified by a full file name,
30 * including path.
31 */
32 public final class StreamableFileNameResource extends StreamableResource {
33 /**
34 * The full file name, including path,
35 * of the resource to be streamed.
36 */
37 private final String fileName;
38
39 /**
40 * Constructs an instance that streams
41 * the resource identified by name on demand.
42 * @param fileName full file name, including path,
43 * of the resource to be streamed
44 * on demand, not null
45 */
46 public StreamableFileNameResource(final String fileName) {
47 super();
48 this.fileName = fileName;
49 }
50
51 /**
52 * Gets the file name of the resource to be streamed.
53 * @return full file name, not null
54 */
55 public String getFileName() {
56 return fileName;
57 }
58
59 /**
60 * Opens the file as an input stream.
61 * @return not null
62 * @see StreamableResource#open()
63 * @throws IOException when resource cannot be opened
64 */
65 @Override
66 public InputStream open() throws IOException {
67 return new BufferedInputStream(new FileInputStream(new File(fileName)));
68 }
69
70 /**
71 * Suitable for logging.
72 * @return a description
73 */
74 @Override
75 public String toString() {
76 return "StreamableFileNameResource [fileName=" + fileName + "]";
77 }
78 }