Module org.eclipse.persistence.jpa

Package org.eclipse.persistence.internal.jpa.metamodel

Class SingularAttributeImpl<X,T>

java.lang.Object

org.eclipse.persistence.internal.jpa.metamodel.AttributeImpl<X,T>

org.eclipse.persistence.internal.jpa.metamodel.SingularAttributeImpl<X,T>

Type Parameters:

X - The type containing the represented attribute

T - The type of the represented attribute

All Implemented Interfaces:

Attribute<X,T>, Bindable<T>, SingularAttribute<X,T>, Serializable

public class SingularAttributeImpl<X,T>
extends AttributeImpl<X,T>
implements SingularAttribute<X,T>

Purpose: Provides the implementation for the SingularAttribute interface of the JPA 2.0 Metamodel API (part of the JSR-317 EJB 3.1 Criteria API)

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

Since:

EclipseLink 1.2 - JPA 2.0

See Also:

• SingularAttribute
• Serialized Form

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

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SingularAttributeImpl(ManagedTypeImpl<X> managedType, DatabaseMapping mapping)	Create an instance of the Attribute
protected	SingularAttributeImpl(ManagedTypeImpl<X> managedType, DatabaseMapping mapping, boolean validationEnabled)	INTERNAL: Create an Attribute instance with a passed in validation flag (usually set to true only during Metamodel initialization)

Method Summary

Modifier and Type	Method	Description
Class<T>	getBindableJavaType()	Return the Java type of the represented object.
Bindable.BindableType	getBindableType()
Class<T>	getJavaType()	Return the Java type of the represented attribute.
Type<T>	getType()	Return the type that represents the type of the attribute.
boolean	isId()	Is the attribute an id attribute.
boolean	isOptional()	Can the attribute be null.
boolean	isPlural()	INTERNAL: Return whether the attribute is plural or singular
boolean	isVersion()	Is the attribute a version attribute.
String	toString()	Return the String representation of the receiver.

Methods inherited from class org.eclipse.persistence.internal.jpa.metamodel.AttributeImpl

getDeclaringType, getDescriptor, getJavaMember, getManagedTypeImpl, getMapping, getMetamodel, getName, getPersistentAttributeType, isAssociation, isCollection

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface jakarta.persistence.metamodel.Attribute

getDeclaringType, getJavaMember, getName, getPersistentAttributeType, isAssociation, isCollection

Constructor Details

SingularAttributeImpl

protected SingularAttributeImpl(ManagedTypeImpl<X> managedType,
 DatabaseMapping mapping)

Create an instance of the Attribute

SingularAttributeImpl

protected SingularAttributeImpl(ManagedTypeImpl<X> managedType,
 DatabaseMapping mapping,
 boolean validationEnabled)

INTERNAL: Create an Attribute instance with a passed in validation flag (usually set to true only during Metamodel initialization)

Method Details

getBindableJavaType

public Class<T> getBindableJavaType()

Return the Java type of the represented object. If the bindable type of the object is PLURAL_ATTRIBUTE, the Java element type is returned. If the bindable type is SINGULAR_ATTRIBUTE or ENTITY_TYPE, the Java type of the represented entity or attribute is returned.

Specified by:

getBindableJavaType in interface Bindable<X>

Returns:

Java type

isId

public boolean isId()

Is the attribute an id attribute.

Specified by:

isId in interface SingularAttribute<X,T>

Returns:

boolean indicating whether or not attribute is an id

isOptional

public boolean isOptional()

Can the attribute be null.

Specified by:

isOptional in interface SingularAttribute<X,T>

Returns:

boolean indicating whether or not the attribute can be null

isPlural

public boolean isPlural()

INTERNAL: Return whether the attribute is plural or singular

Specified by:

isPlural in class AttributeImpl<X,T>

isVersion

public boolean isVersion()

Is the attribute a version attribute.

Specified by:

isVersion in interface SingularAttribute<X,T>

Returns:

boolean indicating whether or not attribute is a version attribute

getBindableType

public Bindable.BindableType getBindableType()

Specified by:

getBindableType in interface Bindable<X>

getJavaType

public Class<T> getJavaType()

Return the Java type of the represented attribute.

Specified by:

getJavaType in interface Attribute<X,T>

Specified by:

getJavaType in class AttributeImpl<X,T>

Returns:

Java type

getType

public Type<T> getType()

Return the type that represents the type of the attribute.

Specified by:

getType in interface SingularAttribute<X,T>

Returns:

type of attribute

toString

public String toString()

Return the String representation of the receiver.

Overrides:

toString in class Object