io.siddhi.core.query.selector.attribute.aggregator.incremental

Class CountIncrementalAttributeAggregator

java.lang.Object

io.siddhi.core.query.selector.attribute.aggregator.incremental.IncrementalAttributeAggregator

io.siddhi.core.query.selector.attribute.aggregator.incremental.CountIncrementalAttributeAggregator

public class CountIncrementalAttributeAggregator
extends IncrementalAttributeAggregator

IncrementalAttributeAggregator to calculate count based on an event attribute.

Constructor Summary

Constructors

Constructor and Description
CountIncrementalAttributeAggregator()

Method Summary

Modifier and Type	Method and Description
io.siddhi.query.api.expression.Expression	aggregate()
io.siddhi.query.api.expression.Expression[]	getBaseAggregators()
io.siddhi.query.api.expression.Expression[]	getBaseAttributeInitialValues()
io.siddhi.query.api.definition.Attribute[]	getBaseAttributes()
io.siddhi.query.api.definition.Attribute.Type	getReturnType()
void	init(String attributeName, io.siddhi.query.api.definition.Attribute.Type attributeType)

Methods inherited from class java.lang.Object

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

Constructor Detail

CountIncrementalAttributeAggregator

public CountIncrementalAttributeAggregator()

Method Detail

init

public void init(String attributeName,
                 io.siddhi.query.api.definition.Attribute.Type attributeType)

Specified by:

init in class IncrementalAttributeAggregator

aggregate

public io.siddhi.query.api.expression.Expression aggregate()

Specified by:

aggregate in class IncrementalAttributeAggregator

getBaseAttributes

public io.siddhi.query.api.definition.Attribute[] getBaseAttributes()

Specified by:

getBaseAttributes in class IncrementalAttributeAggregator

getBaseAttributeInitialValues

public io.siddhi.query.api.expression.Expression[] getBaseAttributeInitialValues()

Specified by:

getBaseAttributeInitialValues in class IncrementalAttributeAggregator

getBaseAggregators

public io.siddhi.query.api.expression.Expression[] getBaseAggregators()

Specified by:

getBaseAggregators in class IncrementalAttributeAggregator

getReturnType

public io.siddhi.query.api.definition.Attribute.Type getReturnType()

Specified by:

getReturnType in class IncrementalAttributeAggregator