be.SIRAPRISE.ra

Class SemiMinusUsingProxy

java.lang.Object

be.SIRAPRISE.ra.RelationProxy

be.SIRAPRISE.ra.SemiMinusUsingProxy

All Implemented Interfaces:

IRelation

public final class SemiMinusUsingProxy
extends RelationProxy

SemiMinusProxy

Author:

erwin

Constructor Summary

Constructors

Constructor and Description
SemiMinusUsingProxy(IRelation semiMinuend, IRelation semiDiffWith, java.util.LinkedHashSet<NameIdentifier> usingAttributes) Creates the SemiMinusProxy

Method Summary

Modifier and Type	Method and Description
java.lang.String	getHostExpressionEvaluationText() Gets The expression text for the expression to be evaluated by the host

Methods inherited from class be.SIRAPRISE.ra.RelationProxy

aggregate, dividedyper, extend, getHost, getRelationBuffer, group, gtclose, intersect, intersectUsing, isProxy, join, joinUsing, leftJoin, leftJoinUsing, minus, minusUsing, pack, project, rename, restrict, semijoin, semijoinUsing, semiminus, semiminusUsing, summarizeby, tclose, transform, ungroup, union, unionUsing, unpack, xminus, xminusUsing

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SemiMinusUsingProxy

public SemiMinusUsingProxy(IRelation semiMinuend,
                           IRelation semiDiffWith,
                           java.util.LinkedHashSet<NameIdentifier> usingAttributes)

Creates the SemiMinusProxy

Parameters:

semiMinuend - the 'minuend' of the semiminus

semiDiffWith - the 'subtrahend' of the semiminus

usingAttributes - The attributes to be treated in 'USING' mode by the semidifference.

Method Detail

getHostExpressionEvaluationText

public java.lang.String getHostExpressionEvaluationText()

Description copied from interface: IRelation

Gets The expression text for the expression to be evaluated by the host

Specified by:

getHostExpressionEvaluationText in interface IRelation

Specified by:

getHostExpressionEvaluationText in class RelationProxy

Returns:

The expression text for the expression to be sent to the host for evaluation