javax.persistence.metamodel

Interface IdentifiableType<X>

Type Parameters:

X - The represented entity or mapped superclass type.

All Superinterfaces:

ManagedType<X>, Type<X>

All Known Subinterfaces:

EntityType<X>, MappedSuperclassType<X>

public interface IdentifiableType<X>
extends ManagedType<X>

Instances of the type IdentifiableType represent entity or mapped superclass types.

Since:

Java Persistence 2.0

Nested Class Summary

Nested classes/interfaces inherited from interface javax.persistence.metamodel.Type

Type.PersistenceType

Method Summary

Modifier and Type	Method and Description
<Y> SingularAttribute<X,Y>	getDeclaredId(Class<Y> type) Return the attribute that corresponds to the id attribute declared by the entity or mapped superclass.
<Y> SingularAttribute<X,Y>	getDeclaredVersion(Class<Y> type) Return the attribute that corresponds to the version attribute declared by the entity or mapped superclass.
<Y> SingularAttribute<? super X,Y>	getId(Class<Y> type) Return the attribute that corresponds to the id attribute of the entity or mapped superclass.
Set<SingularAttribute<? super X,?>>	getIdClassAttributes() Return the attributes corresponding to the id class of the identifiable type.
Type<?>	getIdType() Return the type that represents the type of the id.
IdentifiableType<? super X>	getSupertype() Return the identifiable type that corresponds to the most specific mapped superclass or entity extended by the entity or mapped superclass.
<Y> SingularAttribute<? super X,Y>	getVersion(Class<Y> type) Return the attribute that corresponds to the version attribute of the entity or mapped superclass.
boolean	hasSingleIdAttribute() Whether the identifiable type has a single id attribute.
boolean	hasVersionAttribute() Whether the identifiable type has a version attribute.

Methods inherited from interface javax.persistence.metamodel.ManagedType

getAttribute, getAttributes, getCollection, getCollection, getDeclaredAttribute, getDeclaredAttributes, getDeclaredCollection, getDeclaredCollection, getDeclaredList, getDeclaredList, getDeclaredMap, getDeclaredMap, getDeclaredPluralAttributes, getDeclaredSet, getDeclaredSet, getDeclaredSingularAttribute, getDeclaredSingularAttribute, getDeclaredSingularAttributes, getList, getList, getMap, getMap, getPluralAttributes, getSet, getSet, getSingularAttribute, getSingularAttribute, getSingularAttributes

Methods inherited from interface javax.persistence.metamodel.Type

getJavaType, getPersistenceType

Method Detail

getId

<Y> SingularAttribute<? super X,Y> getId(Class<Y> type)

Return the attribute that corresponds to the id attribute of the entity or mapped superclass.

Parameters:

type - the type of the represented id attribute

Returns:

id attribute

Throws:

IllegalArgumentException - if id attribute of the given type is not present in the identifiable type or if the identifiable type has an id class

getDeclaredId

<Y> SingularAttribute<X,Y> getDeclaredId(Class<Y> type)

Return the attribute that corresponds to the id attribute declared by the entity or mapped superclass.

Parameters:

type - the type of the represented declared id attribute

Returns:

declared id attribute

Throws:

IllegalArgumentException - if id attribute of the given type is not declared in the identifiable type or if the identifiable type has an id class

getVersion

<Y> SingularAttribute<? super X,Y> getVersion(Class<Y> type)

Return the attribute that corresponds to the version attribute of the entity or mapped superclass.

Parameters:

type - the type of the represented version attribute

Returns:

version attribute

Throws:

IllegalArgumentException - if version attribute of the given type is not present in the identifiable type

getDeclaredVersion

<Y> SingularAttribute<X,Y> getDeclaredVersion(Class<Y> type)

Return the attribute that corresponds to the version attribute declared by the entity or mapped superclass.

Parameters:

type - the type of the represented declared version attribute

Returns:

declared version attribute

Throws:

IllegalArgumentException - if version attribute of the type is not declared in the identifiable type

getSupertype

IdentifiableType<? super X> getSupertype()

Return the identifiable type that corresponds to the most specific mapped superclass or entity extended by the entity or mapped superclass.

Returns:

supertype of identifiable type or null if no such supertype

hasSingleIdAttribute

boolean hasSingleIdAttribute()

Whether the identifiable type has a single id attribute. Returns true for a simple id or embedded id; returns false for an idclass.

Returns:

boolean indicating whether the identifiable type has a single id attribute

hasVersionAttribute

boolean hasVersionAttribute()

Whether the identifiable type has a version attribute.

Returns:

boolean indicating whether the identifiable type has a version attribute

getIdClassAttributes

Set<SingularAttribute<? super X,?>> getIdClassAttributes()

Return the attributes corresponding to the id class of the identifiable type.

Returns:

id attributes

Throws:

IllegalArgumentException - if the identifiable type does not have an id class

getIdType

Type<?> getIdType()

Return the type that represents the type of the id.

Returns:

type of id