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1   /*
2    * Copyright 2010 The Apache Software Foundation
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing, software
15   * distributed under the License is distributed on an "AS IS" BASIS,
16   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17   * See the License for the specific language governing permissions and
18   * limitations under the License.
19   */
20  
21  package org.apache.hadoop.hbase.rest.transform;
22  
23  /**
24   * Data transformation module
25   */
26  public interface Transform {
27  
28    /*** Transfer direction */
29    static enum Direction {
30      /** From client to server */
31      IN,
32      /** From server to client */
33      OUT
34    };
35  
36    /**
37     * Transform data from one representation to another according to
38     * transfer direction.
39     * @param data input data
40     * @param direction IN or OUT
41     * @return the transformed data
42     */
43    byte[] transform (byte[] data, Direction direction);
44  }