OptionalExpressionImpl (DataNucleus JDO API plugin 6.0.1-SNAPSHOT API)

java.lang.Object
- org.datanucleus.api.jdo.query.ExpressionImpl<T>
- - org.datanucleus.api.jdo.query.ComparableExpressionImpl<Optional<T>>
  - - org.datanucleus.api.jdo.query.OptionalExpressionImpl<T>

All Implemented Interfaces:

javax.jdo.query.ComparableExpression<Optional<T>>, javax.jdo.query.Expression<Optional<T>>, javax.jdo.query.OptionalExpression<T>
```
public class OptionalExpressionImpl<T>
extends ComparableExpressionImpl<Optional<T>>
implements javax.jdo.query.OptionalExpression<T>
```
Implementation of an Optional expression.

Field Summary
- Fields inherited from class org.datanucleus.api.jdo.query.ExpressionImpl
  exprType, queryExpr

Constructor Summary

Constructors
Constructor	Description
`OptionalExpressionImpl(javax.jdo.query.PersistableExpression parent, String name)`
`OptionalExpressionImpl(org.datanucleus.store.query.expression.Expression queryExpr)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`javax.jdo.query.Expression<T>`	`get()`
`javax.jdo.query.BooleanExpression`	`isPresent()`
`javax.jdo.query.Expression<T>`	`orElse(javax.jdo.query.Expression<T> other)`

Methods inherited from class org.datanucleus.api.jdo.query.ComparableExpressionImpl
asc, desc, gt, gt, gteq, gteq, lt, lt, lteq, lteq, max, min

Methods inherited from class org.datanucleus.api.jdo.query.ExpressionImpl
as, cast, count, countDistinct, eq, eq, getQueryExpression, instanceOf, isParameter, isVariable, ne, ne

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

Methods inherited from interface javax.jdo.query.ComparableExpression
asc, desc, gt, gt, gteq, gteq, lt, lt, lteq, lteq, max, min

Methods inherited from interface javax.jdo.query.Expression
as, cast, count, countDistinct, eq, eq, instanceOf, ne, ne

Constructor Detail

OptionalExpressionImpl

public OptionalExpressionImpl(javax.jdo.query.PersistableExpression parent,
                              String name)

OptionalExpressionImpl

public OptionalExpressionImpl(org.datanucleus.store.query.expression.Expression queryExpr)

Method Detail
- get
```
public javax.jdo.query.Expression<T> get()
```
  Specified by:
  
  get in interface javax.jdo.query.OptionalExpression<T>
- isPresent
```
public javax.jdo.query.BooleanExpression isPresent()
```
  Specified by:
  
  isPresent in interface javax.jdo.query.OptionalExpression<T>
- orElse
```
public javax.jdo.query.Expression<T> orElse(javax.jdo.query.Expression<T> other)
```
  Specified by:
  
  orElse in interface javax.jdo.query.OptionalExpression<T>