001/** 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018 019package org.apache.hadoop.record; 020 021import java.io.IOException; 022import java.util.TreeMap; 023import java.util.ArrayList; 024import java.io.DataOutput; 025import java.io.DataOutputStream; 026import java.io.OutputStream; 027 028import org.apache.hadoop.classification.InterfaceAudience; 029import org.apache.hadoop.classification.InterfaceStability; 030 031/** 032 * @deprecated Replaced by <a href="https://hadoop.apache.org/avro/">Avro</a>. 033 */ 034@Deprecated 035@InterfaceAudience.Public 036@InterfaceStability.Stable 037public class BinaryRecordOutput implements RecordOutput { 038 039 private DataOutput out; 040 041 private BinaryRecordOutput() {} 042 043 private void setDataOutput(DataOutput out) { 044 this.out = out; 045 } 046 047 private static ThreadLocal bOut = new ThreadLocal() { 048 @Override 049 protected synchronized Object initialValue() { 050 return new BinaryRecordOutput(); 051 } 052 }; 053 054 /** 055 * Get a thread-local record output for the supplied DataOutput. 056 * @param out data output stream 057 * @return binary record output corresponding to the supplied DataOutput. 058 */ 059 public static BinaryRecordOutput get(DataOutput out) { 060 BinaryRecordOutput bout = (BinaryRecordOutput) bOut.get(); 061 bout.setDataOutput(out); 062 return bout; 063 } 064 065 /** Creates a new instance of BinaryRecordOutput */ 066 public BinaryRecordOutput(OutputStream out) { 067 this.out = new DataOutputStream(out); 068 } 069 070 /** Creates a new instance of BinaryRecordOutput */ 071 public BinaryRecordOutput(DataOutput out) { 072 this.out = out; 073 } 074 075 076 @Override 077 public void writeByte(byte b, String tag) throws IOException { 078 out.writeByte(b); 079 } 080 081 @Override 082 public void writeBool(boolean b, String tag) throws IOException { 083 out.writeBoolean(b); 084 } 085 086 @Override 087 public void writeInt(int i, String tag) throws IOException { 088 Utils.writeVInt(out, i); 089 } 090 091 @Override 092 public void writeLong(long l, String tag) throws IOException { 093 Utils.writeVLong(out, l); 094 } 095 096 @Override 097 public void writeFloat(float f, String tag) throws IOException { 098 out.writeFloat(f); 099 } 100 101 @Override 102 public void writeDouble(double d, String tag) throws IOException { 103 out.writeDouble(d); 104 } 105 106 @Override 107 public void writeString(String s, String tag) throws IOException { 108 Utils.toBinaryString(out, s); 109 } 110 111 @Override 112 public void writeBuffer(Buffer buf, String tag) 113 throws IOException { 114 byte[] barr = buf.get(); 115 int len = buf.getCount(); 116 Utils.writeVInt(out, len); 117 out.write(barr, 0, len); 118 } 119 120 @Override 121 public void startRecord(Record r, String tag) throws IOException {} 122 123 @Override 124 public void endRecord(Record r, String tag) throws IOException {} 125 126 @Override 127 public void startVector(ArrayList v, String tag) throws IOException { 128 writeInt(v.size(), tag); 129 } 130 131 @Override 132 public void endVector(ArrayList v, String tag) throws IOException {} 133 134 @Override 135 public void startMap(TreeMap v, String tag) throws IOException { 136 writeInt(v.size(), tag); 137 } 138 139 @Override 140 public void endMap(TreeMap v, String tag) throws IOException {} 141 142}