com.bigdata.bop.solutions

Interface ISortOrder<E>

All Superinterfaces:

Serializable

All Known Implementing Classes:

SortOrder

public interface ISortOrder<E>
extends Serializable

A value expression and a direction flag for the ordering of the computed values.

Version:

$Id$

Author:

Bryan Thompson

Method Summary

Methods

Modifier and Type	Method and Description
IValueExpression<E>	getExpr() An IValueExpression to be evaluated for each input solution.
boolean	isAscending() true iff the values will be placed into an ascending sort and false if the values will be placed into a descending sort.

Method Detail

getExpr

IValueExpression<E> getExpr()

An IValueExpression to be evaluated for each input solution. The IValueExpression should be either a bare IVariable, a IConstant or an IBind associating the computed value of an IValueExpression with an IVariable bound on the solution as a side-effect.

isAscending

boolean isAscending()

true iff the values will be placed into an ascending sort and false if the values will be placed into a descending sort.