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 package org.apache.hadoop.hbase.ipc; 19 20 /** 21 * Utility for managing the flag byte passed in response to a 22 * {@link HBaseServer.Call} 23 */ 24 class ResponseFlag { 25 private static final byte ERROR_BIT = 0x1; 26 private static final byte LENGTH_BIT = 0x2; 27 28 private ResponseFlag() { 29 // Make it so this class cannot be constructed. 30 } 31 32 static boolean isError(final byte flag) { 33 return (flag & ERROR_BIT) != 0; 34 } 35 36 static boolean isLength(final byte flag) { 37 return (flag & LENGTH_BIT) != 0; 38 } 39 40 static byte getLengthSetOnly() { 41 return LENGTH_BIT; 42 } 43 44 static byte getErrorAndLengthSet() { 45 return LENGTH_BIT | ERROR_BIT; 46 } 47 }