org.hibernate.tuple.entity

Interface EntityTuplizer

All Superinterfaces:

Tuplizer

All Known Implementing Classes:

AbstractEntityTuplizer, DynamicMapEntityTuplizer, PojoEntityTuplizer

public interface EntityTuplizer
extends Tuplizer

Defines further responsibilities reagarding tuplization based on a mapped entity.

EntityTuplizer implementations should have the following constructor signatures: (org.hibernate.tuple.entity.EntityMetamodel, org.hibernate.mapping.PersistentClass) (org.hibernate.tuple.entity.EntityMetamodel, org.hibernate.metamodel.binding.EntityBinding)

Author:

Gavin King, Steve Ebersole

Method Summary

Modifier and Type	Method and Description
void	afterInitialize(Object entity, boolean lazyPropertiesAreUnfetched, SessionImplementor session) Called just after the entities properties have been initialized.
Object	createProxy(Serializable id, SessionImplementor session) Generates an appropriate proxy representation of this entity for this entity-mode.
String	determineConcreteSubclassEntityName(Object entityInstance, SessionFactoryImplementor factory) Given an entity instance, determine the most appropriate (most targeted) entity-name which represents it.
Class	getConcreteProxyClass() Returns the java class to which generated proxies will be typed.
EntityMode	getEntityMode() Return the entity-mode handled by this tuplizer instance.
EntityNameResolver[]	getEntityNameResolvers() Get any EntityNameResolvers associated with this Tuplizer.
Serializable	getIdentifier(Object entity) Deprecated. Use getIdentifier(Object,SessionImplementor) instead.
Serializable	getIdentifier(Object entity, SessionImplementor session) Extract the identifier value from the given entity.
Getter	getIdentifierGetter() Retrieve the getter for the identifier property.
Object	getPropertyValue(Object entity, String propertyName) Extract the value of a particular property from the given entity.
Object[]	getPropertyValuesToInsert(Object entity, Map mergeMap, SessionImplementor session) Extract the values of the insertable properties of the entity (including backrefs)
Object	getVersion(Object entity) Extract the value of the version property from the given entity.
Getter	getVersionGetter() Retrieve the getter for the version property.
boolean	hasProxy() Does this entity, for this mode, present a possibility for proxying?
boolean	hasUninitializedLazyProperties(Object entity) Does the given entity instance have any currently uninitialized lazy properties?
Object	instantiate(Serializable id) Deprecated. Use instantiate(Serializable, SessionImplementor) instead.
Object	instantiate(Serializable id, SessionImplementor session) Create an entity instance initialized with the given identifier.
boolean	isInstrumented() Is it an instrumented POJO?
boolean	isLifecycleImplementor() Does the class managed by this tuplizer implement the Lifecycle interface.
void	resetIdentifier(Object entity, Serializable currentId, Object currentVersion) Deprecated. Use resetIdentifier(Object, Serializable, Object, SessionImplementor) instead
void	resetIdentifier(Object entity, Serializable currentId, Object currentVersion, SessionImplementor session) Inject the given identifier and version into the entity, in order to "roll back" to their original values.
void	setIdentifier(Object entity, Serializable id) Deprecated. Use setIdentifier(Object, Serializable, SessionImplementor) instead.
void	setIdentifier(Object entity, Serializable id, SessionImplementor session) Inject the identifier value into the given entity.
void	setPropertyValue(Object entity, int i, Object value) Inject the value of a particular property.
void	setPropertyValue(Object entity, String propertyName, Object value) Inject the value of a particular property.

Methods inherited from interface org.hibernate.tuple.Tuplizer

getGetter, getMappedClass, getPropertyValue, getPropertyValues, instantiate, isInstance, setPropertyValues

Method Detail

getEntityMode

EntityMode getEntityMode()

Return the entity-mode handled by this tuplizer instance.

Returns:

The entity-mode

instantiate

@Deprecated
Object instantiate(Serializable id)
                        throws HibernateException

Deprecated. Use instantiate(Serializable, SessionImplementor) instead.

Create an entity instance initialized with the given identifier.

Parameters:

id - The identifier value for the entity to be instantiated.

Returns:

The instantiated entity.

Throws:

HibernateException

instantiate

Object instantiate(Serializable id,
                   SessionImplementor session)

Create an entity instance initialized with the given identifier.

Parameters:

id - The identifier value for the entity to be instantiated.

session - The session from which is requests originates

Returns:

The instantiated entity.

getIdentifier

@Deprecated
Serializable getIdentifier(Object entity)
                                throws HibernateException

Deprecated. Use getIdentifier(Object,SessionImplementor) instead.

Extract the identifier value from the given entity.

Parameters:

entity - The entity from which to extract the identifier value.

Returns:

The identifier value.

Throws:

HibernateException - If the entity does not define an identifier property, or an error occurs accessing its value.

getIdentifier

Serializable getIdentifier(Object entity,
                           SessionImplementor session)

Extract the identifier value from the given entity.

Parameters:

entity - The entity from which to extract the identifier value.

session - The session from which is requests originates

Returns:

The identifier value.

setIdentifier

@Deprecated
void setIdentifier(Object entity,
                               Serializable id)
                        throws HibernateException

Deprecated. Use setIdentifier(Object, Serializable, SessionImplementor) instead.

Inject the identifier value into the given entity.

Has no effect if the entity does not define an identifier property

Parameters:

entity - The entity to inject with the identifier value.

id - The value to be injected as the identifier.

Throws:

HibernateException

setIdentifier

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

Inject the identifier value into the given entity.

Has no effect if the entity does not define an identifier property

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

resetIdentifier

@Deprecated
void resetIdentifier(Object entity,
                                 Serializable currentId,
                                 Object currentVersion)

Deprecated. Use resetIdentifier(Object, Serializable, Object, SessionImplementor) instead

Inject the given identifier and version into the entity, in order to "roll back" to their original values.

Parameters:

entity - The entity for which to reset the id/version values

currentId - The identifier value to inject into the entity.

currentVersion - The version value to inject into the entity.

resetIdentifier

void resetIdentifier(Object entity,
                     Serializable currentId,
                     Object currentVersion,
                     SessionImplementor session)

Inject the given identifier and version into the entity, in order to "roll back" to their original values.

Parameters:

entity - The entity for which to reset the id/version values

currentId - The identifier value to inject into the entity.

currentVersion - The version value to inject into the entity.

session - The session from which the request originated

getVersion

Object getVersion(Object entity)
           throws HibernateException

Extract the value of the version property from the given entity.

Parameters:

entity - The entity from which to extract the version value.

Returns:

The value of the version property, or null if not versioned.

Throws:

HibernateException - Indicates a problem accessing the version property

setPropertyValue

void setPropertyValue(Object entity,
                      int i,
                      Object value)
               throws HibernateException

Inject the value of a particular property.

Parameters:

entity - The entity into which to inject the value.

i - The property's index.

value - The property value to inject.

Throws:

HibernateException - Indicates a problem access the property

setPropertyValue

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

Inject the value of a particular property.

Parameters:

entity - The entity into which to inject the value.

propertyName - The name of the property.

value - The property value to inject.

Throws:

HibernateException - Indicates a problem access the property

getPropertyValuesToInsert

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

Extract the values of the insertable properties of the entity (including backrefs)

Parameters:

entity - The entity from which to extract.

mergeMap - a map of instances being merged to merged instances

session - The session in which the resuest is being made.

Returns:

The insertable property values.

Throws:

HibernateException - Indicates a problem access the properties

getPropertyValue

Object getPropertyValue(Object entity,
                        String propertyName)
                 throws HibernateException

Extract the value of a particular property from the given entity.

Parameters:

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

propertyName - The name of the property for which to extract the value.

Returns:

The current value of the given property on the given entity.

Throws:

HibernateException - Indicates a problem access the property

afterInitialize

void afterInitialize(Object entity,
                     boolean lazyPropertiesAreUnfetched,
                     SessionImplementor session)

Called just after the entities properties have been initialized.

Parameters:

entity - The entity being initialized.

lazyPropertiesAreUnfetched - Are defined lazy properties currently unfecthed

session - The session initializing this entity.

hasProxy

boolean hasProxy()

Does this entity, for this mode, present a possibility for proxying?

Returns:

True if this tuplizer can generate proxies for this entity.

createProxy

Object createProxy(Serializable id,
                   SessionImplementor session)
            throws HibernateException

Generates an appropriate proxy representation of this entity for this entity-mode.

Parameters:

id - The id of the instance for which to generate a proxy.

session - The session to which the proxy should be bound.

Returns:

The generate proxies.

Throws:

HibernateException - Indicates an error generating the proxy.

isLifecycleImplementor

boolean isLifecycleImplementor()

Does the class managed by this tuplizer implement the Lifecycle interface.

Returns:

True if the Lifecycle interface is implemented; false otherwise.

getConcreteProxyClass

Class getConcreteProxyClass()

Returns the java class to which generated proxies will be typed.

todo : look at fully encapsulating PersistenceContext.narrowProxy(java.lang.Object, org.hibernate.persister.entity.EntityPersister, org.hibernate.engine.spi.EntityKey, java.lang.Object) here, since that is the only external use of this method

Returns:

The java class to which generated proxies will be typed

hasUninitializedLazyProperties

boolean hasUninitializedLazyProperties(Object entity)

Does the given entity instance have any currently uninitialized lazy properties?

Parameters:

entity - The entity to be check for uninitialized lazy properties.

Returns:

True if uninitialized lazy properties were found; false otherwise.

isInstrumented

boolean isInstrumented()

Is it an instrumented POJO?

Returns:

true if the entity class is instrumented; false otherwise.

getEntityNameResolvers

EntityNameResolver[] getEntityNameResolvers()

Get any EntityNameResolvers associated with this Tuplizer.

Returns:

The associated resolvers. May be null or empty.

determineConcreteSubclassEntityName

String determineConcreteSubclassEntityName(Object entityInstance,
                                           SessionFactoryImplementor factory)

Given an entity instance, determine the most appropriate (most targeted) entity-name which represents it. This is called in situations where we already know an entity name for the given entityInstance; we are being asked to determine if there is a more appropriate entity-name to use, specifically within an inheritence hierarchy.

For example, consider a case where a user calls session.update( "Animal", cat );. Here, the user has explicitly provided Animal as the entity-name. However, they have passed in an instance of Cat which is a subclass of Animal. In this case, we would return Cat as the entity-name.

null may be returned from calls to this method. The meaining of null in that case is assumed to be that we should use whatever explicit entity-name the user provided (Animal rather than Cat in the example above).

Parameters:

entityInstance - The entity instance.

factory - Reference to the SessionFactory.

Returns:

The most appropriate entity name to use.

Throws:

HibernateException - If we are unable to determine an entity-name within the inheritence hierarchy.

getIdentifierGetter

Getter getIdentifierGetter()

Retrieve the getter for the identifier property. May return null.

Returns:

The getter for the identifier property.

getVersionGetter

Getter getVersionGetter()

Retrieve the getter for the version property. May return null.

Returns:

The getter for the version property.