GafferMapper (uk.gov.gchq.gaffer:gaffer2 2.2.0 API)

java.lang.Object
- org.apache.hadoop.mapreduce.Mapper<KEY_IN,VALUE_IN,KEY_OUT,VALUE_OUT>
- - uk.gov.gchq.gaffer.hdfs.operation.mapper.GafferMapper<KEY_IN,VALUE_IN,KEY_OUT,VALUE_OUT>

Type Parameters:

KEY_IN - type of input key

VALUE_IN - type of input value

KEY_OUT - type of output key

VALUE_OUT - type of output value

Direct Known Subclasses:

AddElementsFromHdfsMapper, SampleDataForSplitPointsMapper
```
public abstract class GafferMapper<KEY_IN,VALUE_IN,KEY_OUT,VALUE_OUT>
extends org.apache.hadoop.mapreduce.Mapper<KEY_IN,VALUE_IN,KEY_OUT,VALUE_OUT>
```
An GafferMapper is a Mapper that uses a MapperGenerator to map the input data into Elements and then delegates the elements to an abstract map method to serialise them and add them to the job map context.

- Nested Class Summary
  - Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Mapper
    org.apache.hadoop.mapreduce.Mapper.Context
- Constructor Summary
  
  Constructors
  Constructor Description
  
  GafferMapper()
- Method Summary
  - Methods inherited from class org.apache.hadoop.mapreduce.Mapper
    run
  - Methods inherited from class java.lang.Object
    equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - GafferMapper
```
public GafferMapper()
```