Core

Macrometa core functions are described in the table below.

Function	Description
and	Returns the results of AND operation for all the events.
avg	Calculates the average for all the events.
cast	Converts the first parameter according to the cast.to parameter.
coalesce	Returns the value of the first input parameter that is not null, and all input parameters have to be on the same type.
convert	Converts the first input parameter according to the convertedTo parameter.
count	Returns the count of all the events.
createSet	Includes the given input parameter in a java.util.HashSet and returns the set.
currentTimeMillis	Returns the current timestamp of stream processor application in milliseconds.
default	Checks if the attribute parameter is null and if so returns the value of the default parameter.
distinctCount	This returns the count of distinct occurrences for a given arg.
eventTimestamp	Returns the timestamp of the processed event.
frequency	Counts the number of occurrences of different values of a given attribute.
ifThenElse	Evaluates the condition parameter and returns value of the if.expression.
instanceOfBoolean	Checks whether the parameter is an instance of Boolean or not.
instanceOfDouble	Checks whether the parameter is an instance of Double or not.
instanceOfFloat	Checks if the parameter is an instance of Float or not.
instanceOfInteger	Checks whether the parameter is an instance of Integer or not.
instanceOfLong	Checks whether the parameter is an instance of Long or not.
instanceOfString	Checks whether the parameter is an instance of String or not.
log	Logs the message on the given priority with or without the processed event.
max	Returns the maximum value for all the events.
maxForever	This is the attribute aggregator to store the maximum value for a given attribute.
maximum	Returns the maximum value of the input parameters.
min	Returns the minimum value for all the events.
minForever	This is the attribute aggregator to store the minimum value for a given attribute throughout the lifetime of the query regardless of any windows.
minimum	Returns the minimum value of the input parameters.
or	Returns the results of OR operation for all the events.
pol2Cart (sizeOfSet - Stream)	The pol2Cart function calculating the cartesian coordinates x & y for the given theta.
sizeOfSet	Returns the size of an object of type java.util.Set.
stdDev	Returns the calculated standard deviation for all the events.
sum	Returns the sum for all the events.
unionSet	Union multiple sets.
uuid	Generates a UUID (Universally Unique Identifier).