Package org.apache.drill.exec.udfs

Class TimeBucketFunctions.DoubleTimeBucketFunction

java.lang.Object

org.apache.drill.exec.udfs.TimeBucketFunctions.DoubleTimeBucketFunction

All Implemented Interfaces:

DrillFunc, DrillSimpleFunc

Enclosing class:

TimeBucketFunctions

public static class TimeBucketFunctions.DoubleTimeBucketFunction
extends Object
implements DrillSimpleFunc

This function is used for facilitating time series analysis by creating buckets of time intervals. See https://blog.timescale.com/blog/simplified-time-series-analytics-using-the-time_bucket-function/ for usage. The function takes two arguments: 1. The timestamp (as a Drill timestamp) 2. The desired bucket interval IN milliseconds The function returns a BIGINT of the nearest time bucket.

Constructor Summary

Constructors

Constructor	Description
DoubleTimeBucketFunction()

Method Summary

Modifier and Type	Method	Description
void	eval()
void	setup()

Methods inherited from class java.lang.Object

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

Constructor Details

DoubleTimeBucketFunction

public DoubleTimeBucketFunction()

Method Details

setup

public void setup()

Specified by:

setup in interface DrillSimpleFunc

eval

public void eval()

Specified by:

eval in interface DrillSimpleFunc