com.espertech.esper.epl.core
Class ResultSetProcessorSimpleFactory

java.lang.Object
  com.espertech.esper.epl.core.ResultSetProcessorSimpleFactory

All Implemented Interfaces:

ResultSetProcessorFactory

public class ResultSetProcessorSimpleFactory
extends java.lang.Object
implements ResultSetProcessorFactory

Result set processor prototype for the simplest case: no aggregation functions used in the select clause, and no group-by.

Constructor Summary

ResultSetProcessorSimpleFactory(SelectExprProcessor selectExprProcessor, ExprEvaluator optionalHavingNode, boolean isSelectRStream)
Ctor.

Method Summary

ExprEvaluator	getOptionalHavingExpr()
EventType	getResultEventType() Returns the event type of processed results.
boolean	hasAggregation()
ResultSetProcessor	instantiate(OrderByProcessor orderByProcessor, AggregationService aggregationService, AgentInstanceContext agentInstanceContext)
boolean	isSelectRStream()

Methods inherited from class java.lang.Object

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

Constructor Detail

ResultSetProcessorSimpleFactory

public ResultSetProcessorSimpleFactory(SelectExprProcessor selectExprProcessor,
                                       ExprEvaluator optionalHavingNode,
                                       boolean isSelectRStream)

Ctor.

Parameters:

selectExprProcessor - - for processing the select expression and generting the final output rows

optionalHavingNode - - having clause expression node

isSelectRStream - - true if remove stream events should be generated

Method Detail

instantiate

public ResultSetProcessor instantiate(OrderByProcessor orderByProcessor,
                                      AggregationService aggregationService,
                                      AgentInstanceContext agentInstanceContext)

Specified by:

instantiate in interface ResultSetProcessorFactory

getResultEventType

public EventType getResultEventType()

Description copied from interface: ResultSetProcessorFactory

Returns the event type of processed results.

Specified by:

getResultEventType in interface ResultSetProcessorFactory

Returns:

event type of the resulting events posted by the processor.

hasAggregation

public boolean hasAggregation()

Specified by:

hasAggregation in interface ResultSetProcessorFactory

isSelectRStream

public boolean isSelectRStream()

getOptionalHavingExpr

public ExprEvaluator getOptionalHavingExpr()