Exists (Teiid 15.0.0 API)

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

Constructors
Constructor Description

Exists(QueryExpression query)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`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, isExpression, setExpression

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