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 | |
---|
19 | package org.apache.hadoop.record; |
---|
20 | |
---|
21 | import java.io.IOException; |
---|
22 | import java.util.TreeMap; |
---|
23 | import java.util.ArrayList; |
---|
24 | import java.io.DataOutput; |
---|
25 | import java.io.DataOutputStream; |
---|
26 | import java.io.OutputStream; |
---|
27 | |
---|
28 | /** |
---|
29 | */ |
---|
30 | public class BinaryRecordOutput implements RecordOutput { |
---|
31 | |
---|
32 | private DataOutput out; |
---|
33 | |
---|
34 | private BinaryRecordOutput() {} |
---|
35 | |
---|
36 | private void setDataOutput(DataOutput out) { |
---|
37 | this.out = out; |
---|
38 | } |
---|
39 | |
---|
40 | private static ThreadLocal bOut = new ThreadLocal() { |
---|
41 | protected synchronized Object initialValue() { |
---|
42 | return new BinaryRecordOutput(); |
---|
43 | } |
---|
44 | }; |
---|
45 | |
---|
46 | /** |
---|
47 | * Get a thread-local record output for the supplied DataOutput. |
---|
48 | * @param out data output stream |
---|
49 | * @return binary record output corresponding to the supplied DataOutput. |
---|
50 | */ |
---|
51 | public static BinaryRecordOutput get(DataOutput out) { |
---|
52 | BinaryRecordOutput bout = (BinaryRecordOutput) bOut.get(); |
---|
53 | bout.setDataOutput(out); |
---|
54 | return bout; |
---|
55 | } |
---|
56 | |
---|
57 | /** Creates a new instance of BinaryRecordOutput */ |
---|
58 | public BinaryRecordOutput(OutputStream out) { |
---|
59 | this.out = new DataOutputStream(out); |
---|
60 | } |
---|
61 | |
---|
62 | /** Creates a new instance of BinaryRecordOutput */ |
---|
63 | public BinaryRecordOutput(DataOutput out) { |
---|
64 | this.out = out; |
---|
65 | } |
---|
66 | |
---|
67 | |
---|
68 | public void writeByte(byte b, String tag) throws IOException { |
---|
69 | out.writeByte(b); |
---|
70 | } |
---|
71 | |
---|
72 | public void writeBool(boolean b, String tag) throws IOException { |
---|
73 | out.writeBoolean(b); |
---|
74 | } |
---|
75 | |
---|
76 | public void writeInt(int i, String tag) throws IOException { |
---|
77 | Utils.writeVInt(out, i); |
---|
78 | } |
---|
79 | |
---|
80 | public void writeLong(long l, String tag) throws IOException { |
---|
81 | Utils.writeVLong(out, l); |
---|
82 | } |
---|
83 | |
---|
84 | public void writeFloat(float f, String tag) throws IOException { |
---|
85 | out.writeFloat(f); |
---|
86 | } |
---|
87 | |
---|
88 | public void writeDouble(double d, String tag) throws IOException { |
---|
89 | out.writeDouble(d); |
---|
90 | } |
---|
91 | |
---|
92 | public void writeString(String s, String tag) throws IOException { |
---|
93 | Utils.toBinaryString(out, s); |
---|
94 | } |
---|
95 | |
---|
96 | public void writeBuffer(Buffer buf, String tag) |
---|
97 | throws IOException { |
---|
98 | byte[] barr = buf.get(); |
---|
99 | int len = buf.getCount(); |
---|
100 | Utils.writeVInt(out, len); |
---|
101 | out.write(barr, 0, len); |
---|
102 | } |
---|
103 | |
---|
104 | public void startRecord(Record r, String tag) throws IOException {} |
---|
105 | |
---|
106 | public void endRecord(Record r, String tag) throws IOException {} |
---|
107 | |
---|
108 | public void startVector(ArrayList v, String tag) throws IOException { |
---|
109 | writeInt(v.size(), tag); |
---|
110 | } |
---|
111 | |
---|
112 | public void endVector(ArrayList v, String tag) throws IOException {} |
---|
113 | |
---|
114 | public void startMap(TreeMap v, String tag) throws IOException { |
---|
115 | writeInt(v.size(), tag); |
---|
116 | } |
---|
117 | |
---|
118 | public void endMap(TreeMap v, String tag) throws IOException {} |
---|
119 | |
---|
120 | } |
---|