org.datanucleus.api.jdo.query

Class OptionalExpressionImpl<T>

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 and Description
OptionalExpressionImpl(org.datanucleus.query.expression.Expression queryExpr)
OptionalExpressionImpl(javax.jdo.query.PersistableExpression parent, String name)

Method Summary

Modifier and Type	Method and 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.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>