*** This class is subject to change. ***

com.sas.iquery.metadata.expr.relational
Class SimpleConditionalExpression_TestForNull

com.sas.iquery.metadata.expr.relational.SimpleConditionalExpression_TestForNull

All Implemented Interfaces:

Base, BusinessModelResourceReferencer, CascadableFilter, ModelItem, UsabilityInterface, ExpressionInterface, PropertyChangeListenee, java.beans.PropertyChangeListener, java.lang.Cloneable, java.util.EventListener

public class SimpleConditionalExpression_TestForNull
implements BusinessModelResourceReferencer

Models the testing for the NULL simple conditional expression, which has the following abstract form:
<WhatToCompare> IS [NOT] NULL

Field Summary

Fields inherited from class com.sas.iquery.metadata.expr.relational.RelationalConditionalExpression

EVENT_FF_OVERRIDE_STATUS_CHANGED, EVENT_FF_OVERRIDE_VALUE_CHANGED

Fields inherited from class com.sas.iquery.metadata.expr.ConditionalExpression

EVENT_NEGATION_CHANGED

Fields inherited from interface com.sas.iquery.metadata.business.Base

EVENT_OBJECT_DEFINITION_CHANGED

Fields inherited from interface com.sas.iquery.metadata.business.ModelItem

EVENT_OBJECT_PROPERTY_CHANGED

Constructor Summary

SimpleConditionalExpression_TestForNull()

Method Summary

ExpressionInterface	getWhatToCompare() Returns the expression that is tested for NULL.
void	setWhatToCompare(ExpressionInterface expr) Sets the expression that is to be tested for NULL.

Methods inherited from class com.sas.iquery.metadata.expr.relational.RelationalConditionalExpression

getExpression

Methods inherited from class com.sas.iquery.metadata.expr.ConditionalExpression

getExpressionType, isNegated, setIsNegated

Methods inherited from interface com.sas.iquery.metadata.business.BusinessModelResourceReferencer

getResources

Methods inherited from interface com.sas.iquery.metadata.PropertyChangeListenee

addListener, getListeners, removeListener

Methods inherited from interface com.sas.iquery.metadata.business.UsabilityInterface

getReasonsUnusable, isUsableInQuery

Constructor Detail

SimpleConditionalExpression_TestForNull

public SimpleConditionalExpression_TestForNull()

Method Detail

*** This method is subject to change. ***

setWhatToCompare

public void setWhatToCompare(ExpressionInterface expr)

Sets the expression that is to be tested for NULL.

Parameters:

expr - the expression to be tested.

*** This method is subject to change. ***

getWhatToCompare

public ExpressionInterface getWhatToCompare()

Returns the expression that is tested for NULL.

Returns:

the expression to be tested.

*** This class is subject to change. ***