SQLExists (Ontopia)

java.lang.Object
- net.ontopia.persistence.query.sql.SQLExists

All Implemented Interfaces:

SQLExpressionIF
```
public class SQLExists
extends Object
implements SQLExpressionIF
```
INTERNAL: SQL condition: exists. Evaluates to true if the left value contains the right value.
An EXISTS condition tests for existence of rows in a subquery.

Field Summary

Fields
Modifier and Type Field Description

protected SQLExpressionIF expression
- Fields inherited from interface net.ontopia.persistence.query.sql.SQLExpressionIF
  AND, EQUALS, EXISTS, FALSE, IN, IS_NULL, JOIN, LIKE, NOT, NOT_EQUALS, OR, SET_OPERATION, VALUE_EXPRESSION, VERBATIM

Constructor Summary

Constructors
Constructor Description

SQLExists(SQLExpressionIF expression)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`SQLExpressionIF`	`getExpression()`
`int`	`getType()`	INTERNAL: Returns the expression type.
`void`	`setExpression(SQLExpressionIF expression)`
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - expression
```
protected SQLExpressionIF expression
```
- Constructor Detail
  - SQLExists
```
public SQLExists(SQLExpressionIF expression)
```
- Method Detail
  - getType
```
public int getType()
```
    Description copied from interface: SQLExpressionIF
    
    INTERNAL: Returns the expression type. The type is represented by one of the constants in the SQLExpressionIF interface.
    
    Specified by:
    
    getType in interface SQLExpressionIF
  - getExpression
```
public SQLExpressionIF getExpression()
```
  - setExpression
```
public void setExpression(SQLExpressionIF expression)
```
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object