org.eigenbase.rel
Interface RelCollation

All Known Implementing Classes:

RelCollationImpl

public interface RelCollation

Description of the physical ordering of a relational expression.

An ordering consists of a list of one or more column ordinals and the direction of the ordering.

Since:

March 6, 2006

Version:

$Id: //open/dev/farrago/src/org/eigenbase/rel/RelCollation.java#8 $

Author:

jhyde

Method Summary

List<RelFieldCollation>

getFieldCollations() Returns the ordinals and directions of the columns in this ordering.

Method Detail

getFieldCollations

List<RelFieldCollation> getFieldCollations()

Returns the ordinals and directions of the columns in this ordering.