Package org.apache.druid.query.rowsandcols.semantic

Interface NaiveSortMaker

All Known Implementing Classes:

DefaultNaiveSortMaker

public interface NaiveSortMaker

A NaiveSorter sorts a stream of data in-place. In the worst case, that means it needs to buffer up all RowsAndColumns received before it can return anything. This semantic interface is setup to allow an implementation of RowsAndColumns to know that it is pre-sorted and potentially return sorted data early.

The default implementation cannot actually do this, however, so it is up to the specific concrete RowsAndColumns classes to provide their own implementations that can do this.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	NaiveSortMaker.NaiveSorter

Method Summary

Modifier and Type	Method	Description
static NaiveSortMaker	fromRAC(RowsAndColumns rac)
NaiveSortMaker.NaiveSorter	make(ArrayList<ColumnWithDirection> ordering)	Makes the NaiveSorter that will actually do the sort.
default NaiveSortMaker.NaiveSorter	make(ColumnWithDirection... ordering)

Method Details

fromRAC

static NaiveSortMaker fromRAC(RowsAndColumns rac)

make

NaiveSortMaker.NaiveSorter make(ArrayList<ColumnWithDirection> ordering)

Makes the NaiveSorter that will actually do the sort.

Parameters:

ordering - a specification of which columns to sort in which direction

Returns:

a NaiveSorter that will sort according to the provided spec

make

default NaiveSortMaker.NaiveSorter make(ColumnWithDirection... ordering)