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)

Property Summary

Properties

Type	Property and Description
boolean	hasIdentifier Does this class have an identifier property?

Method Summary

Methods

Modifier and Type	Method and Description
String	getEntityName() The name of the entity
Serializable	getIdentifier(Object object) Deprecated. Use getIdentifier(Object,SessionImplementor) instead
Serializable	getIdentifier(Object entity, SessionImplementor session) 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() 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) Get the value of a particular (named) property
Object[]	getPropertyValues(Object entity) 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) 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() Does the class implement the Lifecycle interface?
Object	instantiate(Serializable id, SessionImplementor session) 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 entity, Serializable id, SessionImplementor session) Inject the identifier value into the given entity.
void	setPropertyValue(Object object, String propertyName, Object value) Set the value of a particular (named) property
void	setPropertyValues(Object object, Object[] values) Set the given values to the mapped properties of the given object

Property Detail

hasIdentifier

Does this class have an identifier property?

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()

The persistent class, or null

instantiate

Object instantiate(Serializable id,
                 SessionImplementor session)

Create a class instance initialized with the given identifier

Parameters:

id - The identifier value to use (may be null to represent no value)

session - The session from which the request originated.

Returns:

The instantiated entity.

getPropertyValue

Object getPropertyValue(Object object,
                      String propertyName)
                        throws HibernateException

Get the value of a particular (named) property

Throws:

HibernateException

getPropertyValues

Object[] getPropertyValues(Object entity)
                           throws HibernateException

Extract the property values from the given entity.

Parameters:

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

Returns:

The property values.

Throws:

HibernateException

setPropertyValue

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

Set the value of a particular (named) property

Throws:

HibernateException

setPropertyValues

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

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

Throws:

HibernateException

getIdentifier

Serializable getIdentifier(Object object)
                           throws HibernateException

Deprecated. Use getIdentifier(Object,SessionImplementor) instead

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

Throws:

HibernateException

getIdentifier

Serializable getIdentifier(Object entity,
                         SessionImplementor session)

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

Parameters:

entity - The entity for which to get the identifier

session - The session from which the request originated

Returns:

The identifier

setIdentifier

void setIdentifier(Object entity,
                 Serializable id,
                 SessionImplementor session)

Inject the identifier value into the given entity.

Parameters:

entity - The entity to inject with the identifier value.

id - The value to be injected as the identifier.

session - The session from which is requests originates

implementsLifecycle

boolean implementsLifecycle()

Does the class implement the Lifecycle interface?

getVersion

Object getVersion(Object object)
                  throws HibernateException

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

Throws:

HibernateException