Interface PluralExpression<C,E>

All Superinterfaces:

Expression<C>, Selection<C>, TupleElement<C>

public interface PluralExpression<C,E>
extends Expression<C>

Type for collection query expressions.

Since:

4.0

Method Summary

Modifier and Type	Method	Description
Predicate	contains(E elem)	Create a predicate that tests whether an element is a member of this collection.
Predicate	contains(Expression<? extends E> elem)	Create a predicate that tests whether an element is a member of this collection.
Predicate	isEmpty()	Create a predicate that tests whether this collection is empty.
Predicate	isNotEmpty()	Create a predicate that tests whether this collection is not empty.
Predicate	notContains(E elem)	Create a predicate that tests whether an element is not a member of this collection.
Predicate	notContains(Expression<? extends E> elem)	Create a predicate that tests whether an element is not a member of this collection.
NumericExpression<Integer>	size()	Create an expression that tests the size of this collection.

Methods inherited from interface Expression

as, cast, coalesce, coalesce, count, countDistinct, equalTo, equalTo, in, in, in, in, in, isMember, isNotMember, isNotNull, isNull, notEqualTo, notEqualTo, nullif, nullif, selectCase

Methods inherited from interface Selection

alias, getCompoundSelectionItems, isCompoundSelection

Methods inherited from interface TupleElement

getAlias, getJavaType

Method Details

isEmpty

Predicate isEmpty()

Create a predicate that tests whether this collection is empty.

Returns:

is-empty predicate

See Also:

• CriteriaBuilder.isEmpty(Expression)

isNotEmpty

Predicate isNotEmpty()

Create a predicate that tests whether this collection is not empty.

Returns:

is-not-empty predicate

See Also:

• CriteriaBuilder.isNotEmpty(Expression)

size

NumericExpression<Integer> size()

Create an expression that tests the size of this collection.

Returns:

size expression

See Also:

• CriteriaBuilder.size(Expression)

contains

Predicate contains(Expression<? extends E> elem)

Create a predicate that tests whether an element is a member of this collection. If the collection is empty, the predicate will be false.

Parameters:

elem - element expression

Returns:

is-member predicate

contains

Predicate contains(E elem)

Create a predicate that tests whether an element is a member of this collection. If the collection is empty, the predicate will be false.

Parameters:

elem - element

Returns:

is-member predicate

notContains

Predicate notContains(Expression<? extends E> elem)

Create a predicate that tests whether an element is not a member of this collection. If the collection is empty, the predicate will be true.

Parameters:

elem - element expression

Returns:

is-not-member predicate

notContains

Predicate notContains(E elem)

Create a predicate that tests whether an element is not a member of this collection. If the collection is empty, the predicate will be true.

Parameters:

elem - element

Returns:

is-not-member predicate