org.apache.flink.streaming.api.functions.source

Interface SourceFunction.SourceContext<T>

Type Parameters:

T - The type of the elements produced by the source.

Enclosing interface:

SourceFunction<T>

public static interface SourceFunction.SourceContext<T>

Interface that source functions use to communicate with the outside world. Normally sources would just emit elements in a loop using collect(T). If the source is a Checkpointed source it must retrieve the checkpoint lock object and use it to protect state updates and element emission as described in SourceFunction.

Method Summary

Modifier and Type	Method and Description
void	collect(T element) Emits one element from the source.
Object	getCheckpointLock() Returns the checkpoint lock.

Method Detail

collect

void collect(T element)

Emits one element from the source.

getCheckpointLock

Object getCheckpointLock()

Returns the checkpoint lock. Please refer to the explanation about checkpointed sources in SourceFunction.