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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.BufferedInputStream;
22  import java.io.BufferedOutputStream;
23  import java.io.IOException;
24  
25  import org.apache.maven.index.reader.WritableResourceHandler;
26  
27  import static java.util.Objects.requireNonNull;
28  
29  /**
30   * Wraps {@link WritableResourceHandler}s so that they return {@link WritableResource}s that return
31   * {@link BufferedInputStream}s and {@link BufferedOutputStream}s.
32   */
33  public class BufferedWritableResourceHandler implements WritableResourceHandler {
34      private final WritableResourceHandler writableResourceHandler;
35  
36      public BufferedWritableResourceHandler(WritableResourceHandler writableResourceHandler) {
37          requireNonNull(writableResourceHandler, "writableResourceHandler cannot be null");
38          this.writableResourceHandler = writableResourceHandler;
39      }
40  
41      @Override
42      public WritableResource locate(String name) throws IOException {
43          return new BufferedWritableResource(writableResourceHandler.locate(name));
44      }
45  
46      @Override
47      public void close() throws IOException {
48          writableResourceHandler.close();
49      }
50  }