| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| GoraGEdgeEdgeInputFormat |
|
| 1.0;1 | ||||
| GoraGEdgeEdgeInputFormat$GoraGEdgeEdgeReader |
|
| 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 | package org.apache.giraph.io.gora; | |
| 19 | ||
| 20 | import java.io.IOException; | |
| 21 | ||
| 22 | import org.apache.giraph.edge.Edge; | |
| 23 | import org.apache.giraph.edge.EdgeFactory; | |
| 24 | import org.apache.giraph.io.gora.generated.GEdge; | |
| 25 | import org.apache.hadoop.io.FloatWritable; | |
| 26 | import org.apache.hadoop.io.LongWritable; | |
| 27 | import org.apache.hadoop.mapreduce.InputSplit; | |
| 28 | import org.apache.hadoop.mapreduce.TaskAttemptContext; | |
| 29 | ||
| 30 | /** | |
| 31 | * Example implementation of a specific reader for a generated data bean. | |
| 32 | */ | |
| 33 | 0 | public class GoraGEdgeEdgeInputFormat |
| 34 | extends GoraEdgeInputFormat<LongWritable, FloatWritable> { | |
| 35 | ||
| 36 | /** | |
| 37 | * Default constructor | |
| 38 | */ | |
| 39 | 0 | public GoraGEdgeEdgeInputFormat() { |
| 40 | 0 | } |
| 41 | ||
| 42 | /** | |
| 43 | * Creates specific vertex reader to be used inside Hadoop. | |
| 44 | * @param split split to be read. | |
| 45 | * @param context JobContext to be used. | |
| 46 | * @return GoraEdgeReader Edge reader to be used by Hadoop. | |
| 47 | */ | |
| 48 | @Override | |
| 49 | public GoraEdgeReader createEdgeReader( | |
| 50 | InputSplit split, TaskAttemptContext context) throws IOException { | |
| 51 | 0 | return new GoraGEdgeEdgeReader(); |
| 52 | } | |
| 53 | ||
| 54 | /** | |
| 55 | * Gora edge reader | |
| 56 | */ | |
| 57 | 0 | protected class GoraGEdgeEdgeReader extends GoraEdgeReader { |
| 58 | ||
| 59 | /** source vertex of the edge */ | |
| 60 | private LongWritable sourceId; | |
| 61 | ||
| 62 | /** | |
| 63 | * Transforms a GoraObject into an Edge object. | |
| 64 | * @param goraObject Object from Gora to be translated. | |
| 65 | * @return Edge Result from transforming the gora object. | |
| 66 | */ | |
| 67 | @Override | |
| 68 | protected Edge<LongWritable, FloatWritable> transformEdge | |
| 69 | (Object goraObject) { | |
| 70 | 0 | Edge<LongWritable, FloatWritable> edge = null; |
| 71 | 0 | GEdge goraEdge = (GEdge) goraObject; |
| 72 | 0 | this.sourceId = new LongWritable(); |
| 73 | 0 | this.sourceId.set(Long.parseLong(goraEdge.getVertexInId().toString())); |
| 74 | 0 | edge = EdgeFactory.create( |
| 75 | new LongWritable( | |
| 76 | 0 | Long.parseLong(goraEdge.getVertexOutId().toString())), |
| 77 | 0 | new FloatWritable(goraEdge.getEdgeWeight())); |
| 78 | 0 | return edge; |
| 79 | } | |
| 80 | ||
| 81 | /** | |
| 82 | * Gets the currentSourceId for the edge. | |
| 83 | * @return LongWritable currentSourceId for the edge. | |
| 84 | */ | |
| 85 | @Override | |
| 86 | public LongWritable getCurrentSourceId() throws IOException, | |
| 87 | InterruptedException { | |
| 88 | 0 | return this.sourceId; |
| 89 | } | |
| 90 | } | |
| 91 | } |