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}