1 /** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, software 14 * distributed under the License is distributed on an "AS IS" BASIS, 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 * See the License for the specific language governing permissions and 17 * limitations under the License. 18 */ 19 20 package org.apache.hadoop.hbase.security.access; 21 22 import java.util.*; 23 24 import org.apache.hadoop.hbase.classification.InterfaceAudience; 25 26 /** 27 * A Static Interface. 28 * Instead of having this code in the the HbaseMapWritable code, where it 29 * blocks the possibility of altering the variables and changing their types, 30 * it is put here in this static interface where the static final Maps are 31 * loaded one time. Only byte[] and Cell are supported at this time. 32 * @deprecated In place until we come up on 0.96 and then it can be removed 33 * along with {@link HbaseObjectWritableFor96Migration}; needed to read 34 * pre-0.96 TablePermissions. 35 */ 36 @Deprecated 37 @InterfaceAudience.Private 38 interface CodeToClassAndBackFor96Migration { 39 /** 40 * Static map that contains mapping from code to class 41 */ 42 Map<Byte, Class<?>> CODE_TO_CLASS = 43 new HashMap<Byte, Class<?>>(); 44 45 /** 46 * Static map that contains mapping from class to code 47 */ 48 Map<Class<?>, Byte> CLASS_TO_CODE = 49 new HashMap<Class<?>, Byte>(); 50 51 /** 52 * Class list for supported classes 53 */ 54 Class<?>[] classList = {byte[].class}; 55 56 /** 57 * The static loader that is used instead of the static constructor in 58 * HbaseMapWritable. 59 */ 60 InternalStaticLoader sl = 61 new InternalStaticLoader(classList, CODE_TO_CLASS, CLASS_TO_CODE); 62 63 /** 64 * Class that loads the static maps with their values. 65 */ 66 class InternalStaticLoader{ 67 InternalStaticLoader(Class<?>[] classList, 68 Map<Byte,Class<?>> CODE_TO_CLASS, Map<Class<?>, Byte> CLASS_TO_CODE){ 69 byte code = 1; 70 for(int i=0; i<classList.length; i++){ 71 CLASS_TO_CODE.put(classList[i], code); 72 CODE_TO_CLASS.put(code, classList[i]); 73 code++; 74 } 75 } 76 } 77 }