org.hibernate.metadata
Interface ClassMetadata

All Known Implementing Classes:

AbstractEntityPersister, JoinedSubclassEntityPersister, SingleTableEntityPersister, UnionSubclassEntityPersister

public interface ClassMetadata

Exposes entity class metadata to the application

Author:

Gavin King

See Also:

SessionFactory.getClassMetadata(Class)

Method Summary

String	getEntityName() The name of the entity
Serializable	getIdentifier(Object entity, EntityMode entityMode) Get the identifier of an instance (throw an exception if no identifier property)
String	getIdentifierPropertyName() Get the name of the identifier property (or return null)
Type	getIdentifierType() Get the identifier Hibernate type
Class	getMappedClass(EntityMode entityMode) The persistent class, or null
int[]	getNaturalIdentifierProperties() Which properties hold the natural id?
boolean[]	getPropertyLaziness() Get the "laziness" of the properties of this class
String[]	getPropertyNames() Get the names of the class' persistent properties
boolean[]	getPropertyNullability() Get the nullability of the class' persistent properties
Type	getPropertyType(String propertyName) Get the type of a particular (named) property
Type[]	getPropertyTypes() Get the Hibernate types of the class properties
Object	getPropertyValue(Object object, String propertyName, EntityMode entityMode) Get the value of a particular (named) property
Object[]	getPropertyValues(Object entity, EntityMode entityMode) Extract the property values from the given entity.
Object[]	getPropertyValuesToInsert(Object entity, Map mergeMap, SessionImplementor session) Return the values of the mapped properties of the object
Object	getVersion(Object object, EntityMode entityMode) Get the version number (or timestamp) from the object's version property (or return null if not versioned)
int	getVersionProperty() Get the index of the version property
boolean	hasIdentifierProperty() Does this class have an identifier property?
boolean	hasNaturalIdentifier() Does this entity declare a natural id?
boolean	hasProxy() Does this class support dynamic proxies?
boolean	hasSubclasses() Does this entity have mapped subclasses?
boolean	implementsLifecycle(EntityMode entityMode) Does the class implement the Lifecycle interface?
boolean	implementsValidatable(EntityMode entityMode) Does the class implement the Validatable interface?
Object	instantiate(Serializable id, EntityMode entityMode) Create a class instance initialized with the given identifier
boolean	isInherited() Does this entity extend a mapped superclass?
boolean	isMutable() Are instances of this class mutable?
boolean	isVersioned() Are instances of this class versioned by a timestamp or version number column?
void	setIdentifier(Object object, Serializable id, EntityMode entityMode) Set the identifier of an instance (or do nothing if no identifier property)
void	setPropertyValue(Object object, String propertyName, Object value, EntityMode entityMode) Set the value of a particular (named) property
void	setPropertyValues(Object object, Object[] values, EntityMode entityMode) Set the given values to the mapped properties of the given object

Method Detail

getEntityName

String getEntityName()

The name of the entity

getIdentifierPropertyName

String getIdentifierPropertyName()

Get the name of the identifier property (or return null)

getPropertyNames

String[] getPropertyNames()

Get the names of the class' persistent properties

getIdentifierType

Type getIdentifierType()

Get the identifier Hibernate type

getPropertyTypes

Type[] getPropertyTypes()

Get the Hibernate types of the class properties

getPropertyType

Type getPropertyType(String propertyName)
                     throws HibernateException

Get the type of a particular (named) property

Throws:

HibernateException

hasProxy

boolean hasProxy()

Does this class support dynamic proxies?

isMutable

boolean isMutable()

Are instances of this class mutable?

isVersioned

boolean isVersioned()

Are instances of this class versioned by a timestamp or version number column?

getVersionProperty

int getVersionProperty()

Get the index of the version property

getPropertyNullability

boolean[] getPropertyNullability()

Get the nullability of the class' persistent properties

getPropertyLaziness

boolean[] getPropertyLaziness()

Get the "laziness" of the properties of this class

hasIdentifierProperty

boolean hasIdentifierProperty()

Does this class have an identifier property?

hasNaturalIdentifier

boolean hasNaturalIdentifier()

Does this entity declare a natural id?

getNaturalIdentifierProperties

int[] getNaturalIdentifierProperties()

Which properties hold the natural id?

hasSubclasses

boolean hasSubclasses()

Does this entity have mapped subclasses?

isInherited

boolean isInherited()

Does this entity extend a mapped superclass?

getPropertyValuesToInsert

Object[] getPropertyValuesToInsert(Object entity,
                                   Map mergeMap,
                                   SessionImplementor session)
                                   throws HibernateException

Return the values of the mapped properties of the object

Throws:

HibernateException

getMappedClass

Class getMappedClass(EntityMode entityMode)

The persistent class, or null

instantiate

Object instantiate(Serializable id,
                   EntityMode entityMode)
                   throws HibernateException

Create a class instance initialized with the given identifier

Throws:

HibernateException

getPropertyValue

Object getPropertyValue(Object object,
                        String propertyName,
                        EntityMode entityMode)
                        throws HibernateException

Get the value of a particular (named) property

Throws:

HibernateException

getPropertyValues

Object[] getPropertyValues(Object entity,
                           EntityMode entityMode)
                           throws HibernateException

Extract the property values from the given entity.

Parameters:

entity - The entity from which to extract the property values.

entityMode - The entity-mode of the given entity

Returns:

The property values.

Throws:

HibernateException

setPropertyValue

void setPropertyValue(Object object,
                      String propertyName,
                      Object value,
                      EntityMode entityMode)
                      throws HibernateException

Set the value of a particular (named) property

Throws:

HibernateException

setPropertyValues

void setPropertyValues(Object object,
                       Object[] values,
                       EntityMode entityMode)
                       throws HibernateException

Set the given values to the mapped properties of the given object

Throws:

HibernateException

getIdentifier

Serializable getIdentifier(Object entity,
                           EntityMode entityMode)
                           throws HibernateException

Get the identifier of an instance (throw an exception if no identifier property)

Throws:

HibernateException

setIdentifier

void setIdentifier(Object object,
                   Serializable id,
                   EntityMode entityMode)
                   throws HibernateException

Set the identifier of an instance (or do nothing if no identifier property)

Throws:

HibernateException

implementsLifecycle

boolean implementsLifecycle(EntityMode entityMode)

Does the class implement the Lifecycle interface?

implementsValidatable

boolean implementsValidatable(EntityMode entityMode)

Does the class implement the Validatable interface?

getVersion

Object getVersion(Object object,
                  EntityMode entityMode)
                  throws HibernateException

Get the version number (or timestamp) from the object's version property (or return null if not versioned)

Throws:

HibernateException