View Javadoc

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, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  
19  package org.apache.giraph.utils;
20  
21  /**
22   * UnsafeReusableByteArrayInput is a data structure to read from a
23   * byte buffer with a read pointer that can be moved to desired location
24   */
25  public class UnsafeReusableByteArrayInput extends UnsafeArrayReads {
26  
27    /**
28     * Default Constructor
29     */
30    public UnsafeReusableByteArrayInput() {
31      super(null, 0, 0);
32    }
33  
34    /**
35     * Initialize the object with all required parameters
36     *
37     * @param buf byte buffer
38     * @param offset offset in the buffer
39     * @param length length of the valid data
40     */
41    public void initialize(byte[] buf, int offset, int length) {
42      this.buf = buf;
43      this.pos = offset;
44      this.bufLength = length;
45    }
46  }