com.espertech.esper.epl.core.resultset.handthru

Class ResultSetProcessorSimpleImpl

java.lang.Object

com.espertech.esper.epl.core.resultset.handthru.ResultSetProcessorSimpleImpl

All Implemented Interfaces:

ResultSetProcessor, ResultSetProcessorSimple, StopCallback

public class ResultSetProcessorSimpleImpl
extends java.lang.Object
implements ResultSetProcessorSimple

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

The processor generates one row for each event entering (new event) and one row for each event leaving (old event).

Field Summary

Fields

Modifier and Type	Field and Description
protected ExprEvaluatorContext	exprEvaluatorContext
protected ResultSetProcessorSimpleFactory	prototype

Method Summary

Modifier and Type	Method and Description
void	acceptHelperVisitor(ResultSetProcessorOutputHelperVisitor visitor)
static void	acceptHelperVisitorCodegen(CodegenMethodNode method, CodegenInstanceAux instance)
void	applyJoinResult(java.util.Set<MultiKey<EventBean>> newEvents, java.util.Set<MultiKey<EventBean>> oldEvents)
void	applyViewResult(EventBean[] newData, EventBean[] oldData)
void	clear() Clear out current state.
UniformPair<EventBean[]>	continueOutputLimitedLastAllNonBufferedJoin(boolean isSynthesize)
static void	continueOutputLimitedLastAllNonBufferedJoinCodegen(ResultSetProcessorSimpleForge forge, CodegenClassScope classScope, CodegenMethodNode method, CodegenInstanceAux instance)
UniformPair<EventBean[]>	continueOutputLimitedLastAllNonBufferedView(boolean isSynthesize)
static void	continueOutputLimitedLastAllNonBufferedViewCodegen(ResultSetProcessorSimpleForge forge, CodegenClassScope classScope, CodegenMethodNode method, CodegenInstanceAux instance)
boolean	evaluateHavingClause(EventBean[] eventsPerStream, boolean isNewData, ExprEvaluatorContext exprEvaluatorContext)
ExprEvaluatorContext	getAgentInstanceContext()
java.util.Iterator<EventBean>	getIterator(java.util.Set<MultiKey<EventBean>> joinSet) Returns the iterator for iterating over a join-result.
java.util.Iterator<EventBean>	getIterator(Viewable parent) Returns the iterator implementing the group-by and aggregation and order-by logic specific to each case of use of these construct.
static void	getIteratorJoinCodegen(ResultSetProcessorSimpleForge forge, CodegenClassScope classScope, CodegenMethodNode method, CodegenInstanceAux instance)
static void	getIteratorViewCodegen(ResultSetProcessorSimpleForge forge, CodegenClassScope classScope, CodegenMethodNode method, CodegenInstanceAux instance)
EventType	getResultEventType() Returns the event type of processed results.
boolean	hasHavingClause()
UniformPair<EventBean[]>	processJoinResult(java.util.Set<MultiKey<EventBean>> newEvents, java.util.Set<MultiKey<EventBean>> oldEvents, boolean isSynthesize) For use by joins posting their result, process the event rows that are entered and removed (new and old events).
static void	processJoinResultCodegen(ResultSetProcessorSimpleForge forge, CodegenClassScope classScope, CodegenMethodNode method, CodegenInstanceAux instance)
UniformPair<EventBean[]>	processOutputLimitedJoin(java.util.List<UniformPair<java.util.Set<MultiKey<EventBean>>>> joinEventsSet, boolean generateSynthetic) Processes batched events in case of output-rate limiting.
static void	processOutputLimitedJoinCodegen(ResultSetProcessorSimpleForge forge, CodegenMethodNode method)
void	processOutputLimitedLastAllNonBufferedJoin(java.util.Set<MultiKey<EventBean>> newEvents, java.util.Set<MultiKey<EventBean>> oldEvents, boolean isGenerateSynthetic)
static void	processOutputLimitedLastAllNonBufferedJoinCodegen(ResultSetProcessorSimpleForge forge, CodegenClassScope classScope, CodegenMethodNode method, CodegenInstanceAux instance)
void	processOutputLimitedLastAllNonBufferedView(EventBean[] newData, EventBean[] oldData, boolean isGenerateSynthetic)
static void	processOutputLimitedLastAllNonBufferedViewCodegen(ResultSetProcessorSimpleForge forge, CodegenClassScope classScope, CodegenMethodNode method, CodegenInstanceAux instance)
UniformPair<EventBean[]>	processOutputLimitedView(java.util.List<UniformPair<EventBean[]>> viewEventsList, boolean generateSynthetic) Processes batched events in case of output-rate limiting.
static void	processOutputLimitedViewCodegen(ResultSetProcessorSimpleForge forge, CodegenMethodNode method)
UniformPair<EventBean[]>	processViewResult(EventBean[] newData, EventBean[] oldData, boolean isSynthesize) For use by views posting their result, process the event rows that are entered and removed (new and old events).
static void	processViewResultCodegen(ResultSetProcessorSimpleForge forge, CodegenClassScope classScope, CodegenMethodNode method, CodegenInstanceAux instance)
void	setAgentInstanceContext(AgentInstanceContext context)
void	stop() Stops the underlying resources.
static void	stopMethodCodegen(CodegenMethodNode method, CodegenInstanceAux instance)

Methods inherited from class java.lang.Object

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

Field Detail

prototype

protected final ResultSetProcessorSimpleFactory prototype

exprEvaluatorContext

protected ExprEvaluatorContext exprEvaluatorContext

Method Detail

setAgentInstanceContext

public void setAgentInstanceContext(AgentInstanceContext context)

Specified by:

setAgentInstanceContext in interface ResultSetProcessor

getResultEventType

public EventType getResultEventType()

Description copied from interface: ResultSetProcessor

Returns the event type of processed results.

Specified by:

getResultEventType in interface ResultSetProcessor

Returns:

event type of the resulting events posted by the processor.

processJoinResult

public UniformPair<EventBean[]> processJoinResult(java.util.Set<MultiKey<EventBean>> newEvents,
                                                  java.util.Set<MultiKey<EventBean>> oldEvents,
                                                  boolean isSynthesize)

Description copied from interface: ResultSetProcessor

For use by joins posting their result, process the event rows that are entered and removed (new and old events). Processes according to select-clauses, group-by clauses and having-clauses and returns new events and old events as specified.

Specified by:

processJoinResult in interface ResultSetProcessor

Parameters:

newEvents - - new events posted by join

oldEvents - - old events posted by join

isSynthesize - - set to true to indicate that synthetic events are required for an iterator result set

Returns:

pair of new events and old events

processJoinResultCodegen

public static void processJoinResultCodegen(ResultSetProcessorSimpleForge forge,
                                            CodegenClassScope classScope,
                                            CodegenMethodNode method,
                                            CodegenInstanceAux instance)

processViewResult

public UniformPair<EventBean[]> processViewResult(EventBean[] newData,
                                                  EventBean[] oldData,
                                                  boolean isSynthesize)

Description copied from interface: ResultSetProcessor

For use by views posting their result, process the event rows that are entered and removed (new and old events). Processes according to select-clauses, group-by clauses and having-clauses and returns new events and old events as specified.

Specified by:

processViewResult in interface ResultSetProcessor

Parameters:

newData - - new events posted by view

oldData - - old events posted by view

isSynthesize - - set to true to indicate that synthetic events are required for an iterator result set

Returns:

pair of new events and old events

processViewResultCodegen

public static void processViewResultCodegen(ResultSetProcessorSimpleForge forge,
                                            CodegenClassScope classScope,
                                            CodegenMethodNode method,
                                            CodegenInstanceAux instance)

getIterator

public java.util.Iterator<EventBean> getIterator(Viewable parent)

Description copied from interface: ResultSetProcessor

Returns the iterator implementing the group-by and aggregation and order-by logic specific to each case of use of these construct.

Specified by:

getIterator in interface ResultSetProcessor

Parameters:

parent - is the parent view iterator

Returns:

event iterator

getIteratorViewCodegen

public static void getIteratorViewCodegen(ResultSetProcessorSimpleForge forge,
                                          CodegenClassScope classScope,
                                          CodegenMethodNode method,
                                          CodegenInstanceAux instance)

getIterator

public java.util.Iterator<EventBean> getIterator(java.util.Set<MultiKey<EventBean>> joinSet)

Description copied from interface: ResultSetProcessor

Returns the iterator for iterating over a join-result.

Specified by:

getIterator in interface ResultSetProcessor

Parameters:

joinSet - is the join result set

Returns:

iterator over join results

getIteratorJoinCodegen

public static void getIteratorJoinCodegen(ResultSetProcessorSimpleForge forge,
                                          CodegenClassScope classScope,
                                          CodegenMethodNode method,
                                          CodegenInstanceAux instance)

clear

public void clear()

Description copied from interface: ResultSetProcessor

Clear out current state.

Specified by:

clear in interface ResultSetProcessor

applyViewResult

public void applyViewResult(EventBean[] newData,
                            EventBean[] oldData)

Specified by:

applyViewResult in interface ResultSetProcessor

applyJoinResult

public void applyJoinResult(java.util.Set<MultiKey<EventBean>> newEvents,
                            java.util.Set<MultiKey<EventBean>> oldEvents)

Specified by:

applyJoinResult in interface ResultSetProcessor

processOutputLimitedLastAllNonBufferedView

public void processOutputLimitedLastAllNonBufferedView(EventBean[] newData,
                                                       EventBean[] oldData,
                                                       boolean isGenerateSynthetic)

Specified by:

processOutputLimitedLastAllNonBufferedView in interface ResultSetProcessor

processOutputLimitedLastAllNonBufferedViewCodegen

public static void processOutputLimitedLastAllNonBufferedViewCodegen(ResultSetProcessorSimpleForge forge,
                                                                     CodegenClassScope classScope,
                                                                     CodegenMethodNode method,
                                                                     CodegenInstanceAux instance)

processOutputLimitedLastAllNonBufferedJoin

public void processOutputLimitedLastAllNonBufferedJoin(java.util.Set<MultiKey<EventBean>> newEvents,
                                                       java.util.Set<MultiKey<EventBean>> oldEvents,
                                                       boolean isGenerateSynthetic)

Specified by:

processOutputLimitedLastAllNonBufferedJoin in interface ResultSetProcessor

processOutputLimitedLastAllNonBufferedJoinCodegen

public static void processOutputLimitedLastAllNonBufferedJoinCodegen(ResultSetProcessorSimpleForge forge,
                                                                     CodegenClassScope classScope,
                                                                     CodegenMethodNode method,
                                                                     CodegenInstanceAux instance)

continueOutputLimitedLastAllNonBufferedView

public UniformPair<EventBean[]> continueOutputLimitedLastAllNonBufferedView(boolean isSynthesize)

Specified by:

continueOutputLimitedLastAllNonBufferedView in interface ResultSetProcessor

continueOutputLimitedLastAllNonBufferedViewCodegen

public static void continueOutputLimitedLastAllNonBufferedViewCodegen(ResultSetProcessorSimpleForge forge,
                                                                      CodegenClassScope classScope,
                                                                      CodegenMethodNode method,
                                                                      CodegenInstanceAux instance)

continueOutputLimitedLastAllNonBufferedJoin

public UniformPair<EventBean[]> continueOutputLimitedLastAllNonBufferedJoin(boolean isSynthesize)

Specified by:

continueOutputLimitedLastAllNonBufferedJoin in interface ResultSetProcessor

continueOutputLimitedLastAllNonBufferedJoinCodegen

public static void continueOutputLimitedLastAllNonBufferedJoinCodegen(ResultSetProcessorSimpleForge forge,
                                                                      CodegenClassScope classScope,
                                                                      CodegenMethodNode method,
                                                                      CodegenInstanceAux instance)

stop

public void stop()

Description copied from interface: StopCallback

Stops the underlying resources.

Specified by:

stop in interface StopCallback

stopMethodCodegen

public static void stopMethodCodegen(CodegenMethodNode method,
                                     CodegenInstanceAux instance)

acceptHelperVisitor

public void acceptHelperVisitor(ResultSetProcessorOutputHelperVisitor visitor)

Specified by:

acceptHelperVisitor in interface ResultSetProcessor

acceptHelperVisitorCodegen

public static void acceptHelperVisitorCodegen(CodegenMethodNode method,
                                              CodegenInstanceAux instance)

processOutputLimitedJoin

public UniformPair<EventBean[]> processOutputLimitedJoin(java.util.List<UniformPair<java.util.Set<MultiKey<EventBean>>>> joinEventsSet,
                                                         boolean generateSynthetic)

Description copied from interface: ResultSetProcessor

Processes batched events in case of output-rate limiting.

Specified by:

processOutputLimitedJoin in interface ResultSetProcessor

Parameters:

joinEventsSet - the join results

generateSynthetic - flag to indicate whether synthetic events must be generated

Returns:

results for dispatch

processOutputLimitedJoinCodegen

public static void processOutputLimitedJoinCodegen(ResultSetProcessorSimpleForge forge,
                                                   CodegenMethodNode method)

processOutputLimitedView

public UniformPair<EventBean[]> processOutputLimitedView(java.util.List<UniformPair<EventBean[]>> viewEventsList,
                                                         boolean generateSynthetic)

Description copied from interface: ResultSetProcessor

Processes batched events in case of output-rate limiting.

Specified by:

processOutputLimitedView in interface ResultSetProcessor

Parameters:

viewEventsList - the view results

generateSynthetic - flag to indicate whether synthetic events must be generated

Returns:

results for dispatch

processOutputLimitedViewCodegen

public static void processOutputLimitedViewCodegen(ResultSetProcessorSimpleForge forge,
                                                   CodegenMethodNode method)

hasHavingClause

public boolean hasHavingClause()

Specified by:

hasHavingClause in interface ResultSetProcessorSimple

evaluateHavingClause

public boolean evaluateHavingClause(EventBean[] eventsPerStream,
                                    boolean isNewData,
                                    ExprEvaluatorContext exprEvaluatorContext)

Specified by:

evaluateHavingClause in interface ResultSetProcessorSimple

getAgentInstanceContext

public ExprEvaluatorContext getAgentInstanceContext()

Specified by:

getAgentInstanceContext in interface ResultSetProcessorSimple