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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.maven.index.reader.resource;
20  
21  import java.io.IOException;
22  import java.io.InputStream;
23  import java.io.OutputStream;
24  import java.nio.file.Files;
25  import java.nio.file.NoSuchFileException;
26  import java.nio.file.Path;
27  
28  import org.apache.maven.index.reader.WritableResourceHandler.WritableResource;
29  
30  import static java.util.Objects.requireNonNull;
31  
32  /**
33   * A {@link WritableResource} that represents a {@link Path}.
34   */
35  public class PathWritableResource implements WritableResource {
36      private final Path path;
37  
38      public PathWritableResource(Path path) {
39          requireNonNull(path, "path cannot be null");
40          this.path = path;
41      }
42  
43      @Override
44      public OutputStream write() throws IOException {
45          return Files.newOutputStream(path);
46      }
47  
48      @Override
49      public InputStream read() throws IOException {
50          try {
51              return Files.newInputStream(path);
52          } catch (NoSuchFileException e) {
53              return null;
54          }
55      }
56  
57      @Override
58      public void close() throws IOException {}
59  }