Package org.apache.druid.segment

Interface TimeBoundaryInspector

All Known Implementing Classes:

IncrementalIndexTimeBoundaryInspector, QueryableIndexTimeBoundaryInspector, WrappedTimeBoundaryInspector

public interface TimeBoundaryInspector

Returns min/max values of ColumnHolder.TIME_COLUMN_NAME for a segment. Typically retrieved from Segment.as(Class). Only offered by segments that are able to provide more detailed min/max values via metadata inspection than are available from Segment.getDataInterval().

Method Summary

Modifier and Type	Method	Description
org.joda.time.DateTime	getMaxTime()	Upper bound on ColumnHolder.TIME_COLUMN_NAME.
default org.joda.time.Interval	getMinMaxInterval()	Smallest interval that contains getMinTime() and getMaxTime().
org.joda.time.DateTime	getMinTime()	Lower bound on ColumnHolder.TIME_COLUMN_NAME.
boolean	isMinMaxExact()	Whether the lower and upper bounds returned by getMinTime() and getMaxTime() are actually found in the dataset.

Method Details

getMinTime

org.joda.time.DateTime getMinTime()

Lower bound on ColumnHolder.TIME_COLUMN_NAME. Matches the lowest timestamp in the dataset if isMinMaxExact().

getMaxTime

org.joda.time.DateTime getMaxTime()

Upper bound on ColumnHolder.TIME_COLUMN_NAME. Strict if isMinMaxExact(). Matches the highest timestamp in the dataset if isMinMaxExact().

getMinMaxInterval

default org.joda.time.Interval getMinMaxInterval()

Smallest interval that contains getMinTime() and getMaxTime(). The endpoint is one millisecond higher than getMaxTime().

isMinMaxExact

boolean isMinMaxExact()

Whether the lower and upper bounds returned by getMinTime() and getMaxTime() are actually found in the dataset. If true, the bounds are strict and can be used substitutes for aggregations MIN(__time) and MAX(__time).