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, OutputLimitSpec outputLimitSpec, boolean enableOutputLimitOpt, ResultSetProcessorHelperFactory resultSetProcessorHelperFactory, int numStreams)
Ctor.

Method Summary

int	getNumStreams()
ExprEvaluator	getOptionalHavingExpr()
EventType	getResultEventType() Returns the event type of processed results.
ResultSetProcessorHelperFactory	getResultSetProcessorHelperFactory()
ResultSetProcessorType	getResultSetProcessorType() Returns the type of result set processor.
boolean	hasAggregation()
ResultSetProcessor	instantiate(OrderByProcessor orderByProcessor, AggregationService aggregationService, AgentInstanceContext agentInstanceContext)
boolean	isEnableOutputLimitOpt()
boolean	isOutputAll()
boolean	isOutputLast()
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,
                                       OutputLimitSpec outputLimitSpec,
                                       boolean enableOutputLimitOpt,
                                       ResultSetProcessorHelperFactory resultSetProcessorHelperFactory,
                                       int numStreams)

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

getResultSetProcessorType

public ResultSetProcessorType getResultSetProcessorType()

Description copied from interface: ResultSetProcessorFactory

Returns the type of result set processor.

Specified by:

getResultSetProcessorType in interface ResultSetProcessorFactory

Returns:

result set processor type

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()

isOutputLast

public boolean isOutputLast()

isOutputAll

public boolean isOutputAll()

isEnableOutputLimitOpt

public boolean isEnableOutputLimitOpt()

getResultSetProcessorHelperFactory

public ResultSetProcessorHelperFactory getResultSetProcessorHelperFactory()

getNumStreams

public int getNumStreams()