de.hpi.fgis.voidgen.hadoop.tasks.linksets
Class LinkSetsMapper
java.lang.Object
org.apache.hadoop.mapreduce.Mapper<RDFQuadruple,org.apache.hadoop.io.NullWritable,StringStringPair,org.apache.hadoop.io.IntWritable>
de.hpi.fgis.voidgen.hadoop.tasks.linksets.LinkSetsMapper
public class LinkSetsMapper
- extends org.apache.hadoop.mapreduce.Mapper<RDFQuadruple,org.apache.hadoop.io.NullWritable,StringStringPair,org.apache.hadoop.io.IntWritable>
Outputs each pair of subject cluster and
object cluster from RDF quadruples.
Input
- Key: an RDF quadruple wit subject and object cluster set
- Value: ignored
Output
- Key: pair of
subject cluster and
object cluster
- Value: ONE
- Author:
- Dandy Fenz, Hasso Plattner Institute at University of Potsdam, Germany, Matthias Pohl, Hasso Plattner Institute at University of Potsdam, Germany, Johannes Gosda, Hasso Plattner Institute at University of Potsdam, Germany
Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Mapper |
org.apache.hadoop.mapreduce.Mapper.Context |
Method Summary |
void |
map(RDFQuadruple key,
org.apache.hadoop.io.NullWritable value,
org.apache.hadoop.mapreduce.Mapper.Context context)
|
Methods inherited from class org.apache.hadoop.mapreduce.Mapper |
cleanup, run, setup |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
LinkSetsMapper
public LinkSetsMapper()
map
public void map(RDFQuadruple key,
org.apache.hadoop.io.NullWritable value,
org.apache.hadoop.mapreduce.Mapper.Context context)
throws java.io.IOException,
java.lang.InterruptedException
- Overrides:
map
in class org.apache.hadoop.mapreduce.Mapper<RDFQuadruple,org.apache.hadoop.io.NullWritable,StringStringPair,org.apache.hadoop.io.IntWritable>
- Throws:
java.io.IOException
java.lang.InterruptedException