be.SIRAPRISE.ra

Class MinusUsingProxy

java.lang.Object

be.SIRAPRISE.ra.RelationProxy

be.SIRAPRISE.ra.MinusUsingProxy

All Implemented Interfaces:

IRelation

public class MinusUsingProxy
extends RelationProxy

Author:

erwin

Constructor Summary

Constructors

Constructor and Description
MinusUsingProxy(IRelation minuend, IRelation subtrahend, java.util.LinkedHashSet<NameIdentifier> usingAttributes)

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

MinusUsingProxy

public MinusUsingProxy(IRelation minuend,
                       IRelation subtrahend,
                       java.util.LinkedHashSet<NameIdentifier> usingAttributes)

Parameters:

minuend - the argument to be subjected to the projection

subtrahend - the relation to be intersected with the relation in relationProxy

usingAttributes - the 'USING' attributes to be applied in 'unpack'/'pointwise' modus during intersecting

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