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
019 package org.apache.hadoop.record;
020
021 import java.io.IOException;
022 import java.util.TreeMap;
023 import java.util.ArrayList;
024 import java.io.DataOutput;
025 import java.io.DataOutputStream;
026 import java.io.OutputStream;
027
028 import org.apache.hadoop.classification.InterfaceAudience;
029 import 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
037 public 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 }