A C D G H I M O P R S

A

add(int) - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcount.CountList

Add new value to the counts if the previous values are greater than or equal to the new value.

addItem(E) - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcount.HyperLogLog

Adds a new item to the array by hashing and increasing the count of relevant buckets

C

clear() - Method in class org.wso2.extension.siddhi.execution.approximate.count.CountMinSketch

Clears the counts within the sketch.

clear() - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcount.HyperLogLog

Clears all the counts stored in the data structure.

CountExtension - Class in org.wso2.extension.siddhi.execution.approximate.count

Performs Count-Min Sketch algorithm to get the approximate count(frequency) of events in a window.

CountExtension() - Constructor for class org.wso2.extension.siddhi.execution.approximate.count.CountExtension

CountList - Class in org.wso2.extension.siddhi.execution.approximate.distinctcount

A data structure to keep track of maximum zero counts for a bucket to restore the previous maximums when the old counts are removed.

CountList() - Constructor for class org.wso2.extension.siddhi.execution.approximate.distinctcount.CountList

CountMinSketch<E> - Class in org.wso2.extension.siddhi.execution.approximate.count

A probabilistic data structure to keep count of different items.

CountMinSketch(double, double) - Constructor for class org.wso2.extension.siddhi.execution.approximate.count.CountMinSketch

Instantiate the count min sketch based on a given relative error and confidence

currentState() - Method in class org.wso2.extension.siddhi.execution.approximate.count.CountExtension

currentState() - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcount.DistinctCountExtension

currentState() - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcountever.DistinctCountEverExtension

D

DistinctCountEverExtension - Class in org.wso2.extension.siddhi.execution.approximate.distinctcountever

Performs HyperLogLog algorithm to get the approximate distinct count of events in a stream.

DistinctCountEverExtension() - Constructor for class org.wso2.extension.siddhi.execution.approximate.distinctcountever.DistinctCountEverExtension

DistinctCountExtension - Class in org.wso2.extension.siddhi.execution.approximate.distinctcount

Performs HyperLogLog algorithm to get the approximate distinct count of events in a window.

DistinctCountExtension() - Constructor for class org.wso2.extension.siddhi.execution.approximate.distinctcount.DistinctCountExtension

G

getCardinality() - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcount.HyperLogLog

getConfidenceInterval(long) - Method in class org.wso2.extension.siddhi.execution.approximate.count.CountMinSketch

Calculate the confidence interval of the approximate count [approximateCount - (totalNoOfItems * relativeError), approximateCount + (totalNoOfItems * relativeError)]

getConfidenceInterval() - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcount.HyperLogLog

Calculate the confidence interval for the current distinctCount.

getHashValue(Object) - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcount.HyperLogLog

Compute an integer hash value for a given value

H

hash(Object) - Static method in class org.wso2.extension.siddhi.execution.approximate.distinctcount.MurmurHash

hash(byte[]) - Static method in class org.wso2.extension.siddhi.execution.approximate.distinctcount.MurmurHash

hash(byte[], int, int) - Static method in class org.wso2.extension.siddhi.execution.approximate.distinctcount.MurmurHash

hashLong(long) - Static method in class org.wso2.extension.siddhi.execution.approximate.distinctcount.MurmurHash

HyperLogLog<E> - Class in org.wso2.extension.siddhi.execution.approximate.distinctcount

A probabilistic data structure to calculate the distinctCount of a set.

HyperLogLog(double, double, boolean) - Constructor for class org.wso2.extension.siddhi.execution.approximate.distinctcount.HyperLogLog

Create a new HyperLogLog by specifying the relative error and confidence of answers being within the error margin.

I

init(AbstractDefinition, ExpressionExecutor[], ConfigReader, SiddhiAppContext) - Method in class org.wso2.extension.siddhi.execution.approximate.count.CountExtension

init(AbstractDefinition, ExpressionExecutor[], ConfigReader, SiddhiAppContext) - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcount.DistinctCountExtension

init(AbstractDefinition, ExpressionExecutor[], ConfigReader, SiddhiAppContext) - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcountever.DistinctCountEverExtension

insert(E) - Method in class org.wso2.extension.siddhi.execution.approximate.count.CountMinSketch

Adds the count of an item to the count min sketch calculate hash values relevant for each row in the count array compute indices in the range of [0, width) from those hash values increment each value in the cell of relevant row and index (e.g.

M

MurmurHash - Class in org.wso2.extension.siddhi.execution.approximate.distinctcount

This is a very fast, non-cryptographic hash suitable for general hash-based lookup.

O

org.wso2.extension.siddhi.execution.approximate.count - package org.wso2.extension.siddhi.execution.approximate.count

org.wso2.extension.siddhi.execution.approximate.distinctcount - package org.wso2.extension.siddhi.execution.approximate.distinctcount

org.wso2.extension.siddhi.execution.approximate.distinctcountever - package org.wso2.extension.siddhi.execution.approximate.distinctcountever

P

process(ComplexEventChunk<StreamEvent>, Processor, StreamEventCloner, ComplexEventPopulater) - Method in class org.wso2.extension.siddhi.execution.approximate.count.CountExtension

process(ComplexEventChunk<StreamEvent>, Processor, StreamEventCloner, ComplexEventPopulater) - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcount.DistinctCountExtension

process(ComplexEventChunk<StreamEvent>, Processor, StreamEventCloner, ComplexEventPopulater) - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcountever.DistinctCountEverExtension

R

remove(E) - Method in class org.wso2.extension.siddhi.execution.approximate.count.CountMinSketch

Removes the count of an item from the count min sketch calculate hash values relevant for each row in the count array compute indices in the range of [0, width) from those hash values decrement each value in the cell of relevant row and index (e.g.

remove(int) - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcount.CountList

Remove the given value from the counts

removeItem(E) - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcount.HyperLogLog

Removes the given item from the array and restore the distinctCount value by using the previous count.

restoreState(Map<String, Object>) - Method in class org.wso2.extension.siddhi.execution.approximate.count.CountExtension

restoreState(Map<String, Object>) - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcount.DistinctCountExtension

restoreState(Map<String, Object>) - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcountever.DistinctCountEverExtension

S

start() - Method in class org.wso2.extension.siddhi.execution.approximate.count.CountExtension

start() - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcount.DistinctCountExtension

start() - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcountever.DistinctCountEverExtension

stop() - Method in class org.wso2.extension.siddhi.execution.approximate.count.CountExtension

stop() - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcount.DistinctCountExtension

stop() - Method in class org.wso2.extension.siddhi.execution.approximate.distinctcountever.DistinctCountEverExtension

A C D G H I M O P R S