com.espertech.esper.epl.agg.factory

Class AggregationMethodFactoryCount

java.lang.Object

com.espertech.esper.epl.agg.factory.AggregationMethodFactoryCount

All Implemented Interfaces:

AggregationMethodFactory

public class AggregationMethodFactoryCount
extends Object
implements AggregationMethodFactory

Field Summary

Fields

Modifier and Type	Field and Description
protected Class	countedValueType
protected boolean	ignoreNulls
protected ExprCountNode	parent

Constructor Summary

Constructors

Constructor and Description
AggregationMethodFactoryCount(ExprCountNode parent, boolean ignoreNulls, Class countedValueType)

Method Summary

Modifier and Type	Method and Description
AggregationAccessor	getAccessor()
ExprAggregateNodeBase	getAggregationExpression()
AggregationAgent	getAggregationStateAgent(EngineImportService engineImportService, String statementName)
AggregationStateFactory	getAggregationStateFactory(boolean isMatchRecognize)
AggregationStateKey	getAggregationStateKey(boolean isMatchRecognize)
ExprEvaluator	getMethodAggregationEvaluator(boolean join, EventType[] typesPerStream)
static ExprEvaluator	getMethodAggregationEvaluatorCountBy(ExprNode[] childNodes, boolean join, EventType[] typesPerStream)
Class	getResultType()
boolean	isAccessAggregation()
AggregationMethod	make()
void	validateIntoTableCompatible(AggregationMethodFactory intoTableAgg)

Methods inherited from class java.lang.Object

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

Field Detail

parent

protected final ExprCountNode parent

ignoreNulls

protected final boolean ignoreNulls

countedValueType

protected final Class countedValueType

Constructor Detail

AggregationMethodFactoryCount

public AggregationMethodFactoryCount(ExprCountNode parent,
                                     boolean ignoreNulls,
                                     Class countedValueType)

Method Detail

isAccessAggregation

public boolean isAccessAggregation()

Specified by:

isAccessAggregation in interface AggregationMethodFactory

getResultType

public Class getResultType()

Specified by:

getResultType in interface AggregationMethodFactory

getAggregationStateKey

public AggregationStateKey getAggregationStateKey(boolean isMatchRecognize)

Specified by:

getAggregationStateKey in interface AggregationMethodFactory

getAggregationStateFactory

public AggregationStateFactory getAggregationStateFactory(boolean isMatchRecognize)

Specified by:

getAggregationStateFactory in interface AggregationMethodFactory

getAccessor

public AggregationAccessor getAccessor()

Specified by:

getAccessor in interface AggregationMethodFactory

make

public AggregationMethod make()

Specified by:

make in interface AggregationMethodFactory

getAggregationExpression

public ExprAggregateNodeBase getAggregationExpression()

Specified by:

getAggregationExpression in interface AggregationMethodFactory

validateIntoTableCompatible

public void validateIntoTableCompatible(AggregationMethodFactory intoTableAgg)
                                 throws ExprValidationException

Specified by:

validateIntoTableCompatible in interface AggregationMethodFactory

Throws:

ExprValidationException

getAggregationStateAgent

public AggregationAgent getAggregationStateAgent(EngineImportService engineImportService,
                                                 String statementName)

Specified by:

getAggregationStateAgent in interface AggregationMethodFactory

getMethodAggregationEvaluator

public ExprEvaluator getMethodAggregationEvaluator(boolean join,
                                                   EventType[] typesPerStream)
                                            throws ExprValidationException

Specified by:

getMethodAggregationEvaluator in interface AggregationMethodFactory

Throws:

ExprValidationException

getMethodAggregationEvaluatorCountBy

public static ExprEvaluator getMethodAggregationEvaluatorCountBy(ExprNode[] childNodes,
                                                                 boolean join,
                                                                 EventType[] typesPerStream)
                                                          throws ExprValidationException

Throws:

ExprValidationException