Uses of Class
com.google.appengine.tools.mapreduce.Mapper

Packages that use Mapper

Package	Description
com.google.appengine.tools.mapreduce
com.google.appengine.tools.mapreduce.impl
com.google.appengine.tools.mapreduce.mappers

Uses of Mapper in com.google.appengine.tools.mapreduce

Methods in com.google.appengine.tools.mapreduce with parameters of type Mapper

Modifier and Type	Method and Description
static <I,Void,V> MapOnlyMapper<I,V>	MapOnlyMapper.forMapper(Mapper<I,Void,V> mapper) Returns a MapOnlyMapper for a given Mapper passing only the values to the output.
MapReduceSpecification.Builder<I,K,V,O,R>	MapReduceSpecification.Builder.setMapper(Mapper<? extends I,K,V> mapper)
MapSpecification.Builder<I,O,R>	MapSpecification.Builder.setMapper(Mapper<? extends I,Void,O> mapper) A convenience method that wraps the given mapper using MapOnlyMapper.forMapper(Mapper).

Constructors in com.google.appengine.tools.mapreduce with parameters of type Mapper

Constructor and Description
MapReduceSpecification.Builder(Input<I> input, Mapper<I,K,V> mapper, Reducer<K,V,O> reducer, Output<O,R> output)

Uses of Mapper in com.google.appengine.tools.mapreduce.impl

Methods in com.google.appengine.tools.mapreduce.impl that return Mapper

Modifier and Type	Method and Description
static Mapper	InProcessUtil.getMapper(MapReduceSpecification spec)

Constructors in com.google.appengine.tools.mapreduce.impl with parameters of type Mapper

Constructor and Description
MapShardTask(String mrJobId, int shardNumber, int shardCount, InputReader<I> in, Mapper<I,K,V> mapper, OutputWriter<KeyValue<K,V>> out, long millisPerSlice)

Uses of Mapper in com.google.appengine.tools.mapreduce.mappers

Subclasses of Mapper in com.google.appengine.tools.mapreduce.mappers

Modifier and Type	Class and Description
class	IdentityMapper<K,V> A mapper that passes an incoming KeyValue to it's output.
class	KeyProjectionMapper<T> A pass through mapper that passes the input to the output key.