org.apache.flink.api.java.operators.translation

Class PlanProjectOperator.MapProjector<T extends Tuple,R extends Tuple>

java.lang.Object

org.apache.flink.api.common.functions.AbstractRichFunction

org.apache.flink.api.java.operators.translation.PlanProjectOperator.MapProjector<T,R>

All Implemented Interfaces:

Serializable, Function, MapFunction<T,R>, RichFunction

Enclosing class:

PlanProjectOperator<T,R extends Tuple>

public static final class PlanProjectOperator.MapProjector<T extends Tuple,R extends Tuple>
extends AbstractRichFunction
implements MapFunction<T,R>

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
R	map(Tuple inTuple) The mapping method.

Methods inherited from class org.apache.flink.api.common.functions.AbstractRichFunction

close, getIterationRuntimeContext, getRuntimeContext, open, setRuntimeContext

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

map

public R map(Tuple inTuple)
      throws Exception

Description copied from interface: MapFunction

The mapping method. Takes an element from the input data set and transforms it into exactly one element.

Specified by:

map in interface MapFunction<T extends Tuple,R extends Tuple>

Parameters:

inTuple - The input value.

Returns:

The transformed value

Throws:

Exception - This method may throw exceptions. Throwing an exception will cause the operation to fail and may trigger recovery.