com.espertech.esper.epl.join.base

Interface JoinPreloadMethod

All Known Implementing Classes:

JoinPreloadMethodImpl, JoinPreloadMethodNull

public interface JoinPreloadMethod

Method for preloading events for a given stream onto the stream's indexes, from a buffer already associated with a stream.

Method Summary

Modifier and Type	Method and Description
boolean	isPreloading()
void	preloadAggregation(ResultSetProcessor resultSetProcessor) Initialize the result set process for the purpose of grouping and aggregation from the join result set.
void	preloadFromBuffer(int stream, ExprEvaluatorContext exprEvaluatorContext) Initialize a stream from the stream buffers data.
void	setBuffer(BufferView buffer, int i) Sets the buffee to use.

Method Detail

preloadFromBuffer

void preloadFromBuffer(int stream,
                       ExprEvaluatorContext exprEvaluatorContext)

Initialize a stream from the stream buffers data.

Parameters:

stream - to initialize and load indexes

exprEvaluatorContext - evaluator context

preloadAggregation

void preloadAggregation(ResultSetProcessor resultSetProcessor)

Initialize the result set process for the purpose of grouping and aggregation from the join result set.

Parameters:

resultSetProcessor - is the grouping and aggregation result processing

setBuffer

void setBuffer(BufferView buffer,
               int i)

Sets the buffee to use.

Parameters:

buffer - buffer to use

i - stream

isPreloading

boolean isPreloading()