Package org.apache.pinot.query.runtime.operator.utils

Interface AggregationUtils.Merger

Enclosing class:

AggregationUtils

public static interface AggregationUtils.Merger

Method Summary

Modifier and Type	Method	Description
default Object	init(Object value, DataSchema.ColumnDataType dataType)	Initializes the merger based on the column data type and first value.
Object	merge(Object agg, Object value)	Merges the existing aggregate (the result of init(Object, ColumnDataType)) with the new value coming in (which may be an aggregate in and of itself).

Method Detail

init

@Nullable
default Object init(@Nullable
                    Object value,
                    DataSchema.ColumnDataType dataType)

Initializes the merger based on the column data type and first value.

merge

@Nullable
Object merge(@Nullable
             Object agg,
             @Nullable
             Object value)

Merges the existing aggregate (the result of init(Object, ColumnDataType)) with the new value coming in (which may be an aggregate in and of itself).