Module jakarta.persistence

Package jakarta.persistence.metamodel

Interface SingularAttribute<X,T>

Type Parameters:

X - The type containing the represented attribute

T - The type of the represented attribute

All Superinterfaces:

Attribute<X,T>, Bindable<T>

public interface SingularAttribute<X,T>
extends Attribute<X,T>, Bindable<T>

Instances of the type SingularAttribute represents persistent single-valued properties or fields.

Since:

2.0

Nested Class Summary

Nested classes/interfaces inherited from interface jakarta.persistence.metamodel.Attribute

Attribute.PersistentAttributeType

Nested classes/interfaces inherited from interface jakarta.persistence.metamodel.Bindable

Bindable.BindableType

Method Summary

Modifier and Type	Method	Description
Type<T>	getType()	Return the type that represents the type of the attribute.
boolean	isId()	Is the attribute an id attribute? This method returns true if the attribute is a simple id, an embedded id, or an attribute of an id class.
boolean	isOptional()	Can the attribute be null?
boolean	isVersion()	Is the attribute a version attribute?

Methods inherited from interface jakarta.persistence.metamodel.Attribute

getDeclaringType, getJavaMember, getJavaType, getName, getPersistentAttributeType, isAssociation, isCollection

Methods inherited from interface jakarta.persistence.metamodel.Bindable

getBindableJavaType, getBindableType

Method Details

isId

boolean isId()

Is the attribute an id attribute? This method returns true if the attribute is a simple id, an embedded id, or an attribute of an id class.

Returns:

boolean indicating whether the attribute is an id

isVersion

boolean isVersion()

Is the attribute a version attribute?

Returns:

boolean indicating whether the attribute is a version attribute

isOptional

boolean isOptional()

Can the attribute be null?

Returns:

boolean indicating whether the attribute can be null

See Also:

• Basic.optional()

getType

Type<T> getType()

Return the type that represents the type of the attribute.

Returns:

type of attribute