org.teiid.language
Class Exists

java.lang.Object
  org.teiid.language.BaseLanguageObject
      org.teiid.language.Condition
          org.teiid.language.Exists

All Implemented Interfaces:

Expression, LanguageObject, Predicate, SubqueryContainer

public class Exists
extends Condition
implements Predicate, SubqueryContainer

Represents an EXISTS criteria that checks whether any results would be returned from a subquery.

Constructor Summary

Exists(QueryExpression query)

Method Summary

void	acceptVisitor(LanguageObjectVisitor visitor)
QueryExpression	getSubquery() Get the inner subquery
void	setSubquery(QueryExpression query) Set the inner subquery

Methods inherited from class org.teiid.language.Condition

getType

Methods inherited from class org.teiid.language.BaseLanguageObject

toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Exists

public Exists(QueryExpression query)

Method Detail

getSubquery

public QueryExpression getSubquery()

Description copied from interface: SubqueryContainer

Get the inner subquery

Specified by:

getSubquery in interface SubqueryContainer

Returns:

Subquery

acceptVisitor

public void acceptVisitor(LanguageObjectVisitor visitor)

Specified by:

acceptVisitor in interface LanguageObject

setSubquery

public void setSubquery(QueryExpression query)

Description copied from interface: SubqueryContainer

Set the inner subquery

Specified by:

setSubquery in interface SubqueryContainer

Parameters:

query - Subquery