Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
GeneratedEdgeReader |
|
| 1.0;1 |
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.giraph.examples; | |
20 | ||
21 | import java.io.IOException; | |
22 | import org.apache.giraph.bsp.BspInputSplit; | |
23 | import org.apache.giraph.conf.LongConfOption; | |
24 | import org.apache.giraph.io.EdgeReader; | |
25 | import org.apache.hadoop.io.Writable; | |
26 | import org.apache.hadoop.io.WritableComparable; | |
27 | import org.apache.hadoop.mapreduce.InputSplit; | |
28 | import org.apache.hadoop.mapreduce.TaskAttemptContext; | |
29 | ||
30 | /** | |
31 | * Used by GeneratedEdgeInputFormat | |
32 | * to read some generated data | |
33 | * | |
34 | * @param <I> Vertex index value | |
35 | * @param <E> Edge value | |
36 | */ | |
37 | @SuppressWarnings("rawtypes") | |
38 | public abstract class GeneratedEdgeReader< | |
39 | I extends WritableComparable, | |
40 | E extends Writable> | |
41 | extends EdgeReader<I, E> { | |
42 | /** Default edges produced by this reader */ | |
43 | 0 | public static final LongConfOption DEFAULT_READER_EDGES = |
44 | new LongConfOption("GeneratedEdgeReader.reader_edges", 10, | |
45 | "Default edges produced by this reader"); | |
46 | /** Records read so far */ | |
47 | 0 | protected long recordsRead = 0; |
48 | /** Total records to read (on this split alone) */ | |
49 | 0 | protected long totalRecords = 0; |
50 | /** The input split from initialize(). */ | |
51 | 0 | protected BspInputSplit inputSplit = null; |
52 | ||
53 | /** | |
54 | * Default constructor for reflection. | |
55 | */ | |
56 | 0 | public GeneratedEdgeReader() { |
57 | 0 | } |
58 | ||
59 | @Override | |
60 | public final void initialize(InputSplit inputSplit, | |
61 | TaskAttemptContext context) throws IOException { | |
62 | 0 | totalRecords = DEFAULT_READER_EDGES.get(getConf()); |
63 | 0 | this.inputSplit = (BspInputSplit) inputSplit; |
64 | 0 | } |
65 | ||
66 | @Override | |
67 | public void close() throws IOException { | |
68 | 0 | } |
69 | ||
70 | @Override | |
71 | public final float getProgress() throws IOException { | |
72 | 0 | return recordsRead * 100.0f / totalRecords; |
73 | } | |
74 | } |