Package org.hibernate.type

Class ManyToOneType

java.lang.Object

org.hibernate.type.AbstractType

org.hibernate.type.EntityType

org.hibernate.type.ManyToOneType

All Implemented Interfaces:

Serializable, AssociationType, Type

public class ManyToOneType
extends EntityType

A many-to-one association to an entity.

Author:

Gavin King

See Also:

• Serialized Form

Field Summary

Fields inherited from class org.hibernate.type.EntityType

uniqueKeyPropertyName

Fields inherited from class org.hibernate.type.AbstractType

LEGACY_DEFAULT_SIZE, LEGACY_DICTATED_SIZE

Constructor Summary

Constructors

Constructor	Description
ManyToOneType(String name, TypeConfiguration typeConfiguration)
ManyToOneType(ManyToOneType original, String superTypeEntityName)
ManyToOneType(TypeConfiguration typeConfiguration, String referencedEntityName)	Creates a many-to-one association type with the given referenced entity.
ManyToOneType(TypeConfiguration typeConfiguration, String referencedEntityName, boolean lazy)	Creates a many-to-one association type with the given referenced entity and the given laziness characteristic
ManyToOneType(TypeConfiguration typeConfiguration, String referencedEntityName, boolean referenceToPrimaryKey, String uniqueKeyPropertyName, String propertyName, boolean lazy, boolean unwrapProxy, boolean ignoreNotFound, boolean isLogicalOneToOne)

Method Summary

Modifier and Type	Method	Description
Object	assemble(Serializable oid, SharedSessionContractImplementor session, Object owner)	Reconstruct the object from its disassembled state.
void	beforeAssemble(Serializable oid, SharedSessionContractImplementor session)	Called before assembling a query result set from the query cache, to allow batch fetching of entities missing from the second-level cache.
Serializable	disassemble(Object value, SessionFactoryImplementor sessionFactory)	Return a disassembled representation of the object.
Serializable	disassemble(Object value, SharedSessionContractImplementor session, Object owner)	Return a disassembled representation of the object.
int	getColumnSpan(Mapping mapping)	How many columns are used to persist this type?
ForeignKeyDirection	getForeignKeyDirection()	Get the foreign key directionality of this association
String	getPropertyName()
int[]	getSqlTypeCodes(Mapping mapping)	Return the JDBC types codes as defined by Types or SqlTypes for the columns mapped by this type.
boolean	isAlwaysDirtyChecked()	Do we dirty check this association, even when there are no columns to be updated?
boolean	isDirty(Object old, Object current, boolean[] checkable, SharedSessionContractImplementor session)	Should the parent be considered dirty, given both the old and current value?
boolean	isDirty(Object old, Object current, SharedSessionContractImplementor session)	Should the parent be considered dirty, given both the old and current value?
boolean	isLogicalOneToOne()	Is the association modeled here a 1-1 according to the logical model?
boolean	isModified(Object old, Object current, boolean[] checkable, SharedSessionContractImplementor session)	Has the value been modified compared to the current database state?
boolean	isNullable()	The nullability of the property.
boolean	isOneToOne()	Is the association modeled here defined as a 1-1 in the database (physical model)?
boolean[]	toColumnNullness(Object value, Mapping mapping)	Given an instance of the type, return an array of boolean values indicating which mapped columns would be null.
boolean	useLHSPrimaryKey()	Is the primary key of the owning entity table to be used in the join?

Methods inherited from class org.hibernate.type.EntityType

compare, compare, deepCopy, getAssociatedEntityName, getAssociatedEntityName, getAssociatedEntityPersister, getAssociatedJoinable, getHashCode, getIdentifier, getIdentifier, getIdentifierOrUniqueKeyPropertyName, getIdentifierOrUniqueKeyType, getLHSPropertyName, getName, getReturnedClass, getRHSUniqueKeyPropertyName, isAssociationType, isEager, isEntityType, isEqual, isMutable, isNull, isReferenceToIdentifierProperty, isReferenceToPrimaryKey, isSame, loadByUniqueKey, nullSafeSet, nullSafeSet, replace, requireIdentifierOrUniqueKeyType, resolve, resolveIdentifier, resolveIdentifier, scope, toLoggableString, toString

Methods inherited from class org.hibernate.type.AbstractType

getHashCode, isAnyType, isCollectionType, isComponentType, isEqual, replace

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.hibernate.type.Type

getHashCode, getReturnedClassName, getTypeForEqualsHashCode, isAnyType, isCollectionType, isComponentType, isEqual, replace

Constructor Details

ManyToOneType

public ManyToOneType(TypeConfiguration typeConfiguration,
 String referencedEntityName)

Creates a many-to-one association type with the given referenced entity.

ManyToOneType

public ManyToOneType(TypeConfiguration typeConfiguration,
 String referencedEntityName,
 boolean lazy)

Creates a many-to-one association type with the given referenced entity and the given laziness characteristic

ManyToOneType

public ManyToOneType(TypeConfiguration typeConfiguration,
 String referencedEntityName,
 boolean referenceToPrimaryKey,
 String uniqueKeyPropertyName,
 String propertyName,
 boolean lazy,
 boolean unwrapProxy,
 boolean ignoreNotFound,
 boolean isLogicalOneToOne)

ManyToOneType

public ManyToOneType(ManyToOneType original,
 String superTypeEntityName)

ManyToOneType

public ManyToOneType(String name,
 TypeConfiguration typeConfiguration)

Method Details

isNullable

public boolean isNullable()

Description copied from class: EntityType

The nullability of the property.

Specified by:

isNullable in class EntityType

Returns:

The nullability of the property.

getPropertyName

public String getPropertyName()

Overrides:

getPropertyName in class EntityType

isAlwaysDirtyChecked

public boolean isAlwaysDirtyChecked()

Description copied from interface: AssociationType

Do we dirty check this association, even when there are no columns to be updated?

isOneToOne

public boolean isOneToOne()

Description copied from class: EntityType

Is the association modeled here defined as a 1-1 in the database (physical model)?

Specified by:

isOneToOne in class EntityType

Returns:

True if a 1-1 in the database; false otherwise.

isLogicalOneToOne

public boolean isLogicalOneToOne()

Description copied from class: EntityType

Is the association modeled here a 1-1 according to the logical model?

Overrides:

isLogicalOneToOne in class EntityType

Returns:

True if a 1-1 in the logical model; false otherwise.

getColumnSpan

public int getColumnSpan(Mapping mapping)
                  throws MappingException

Description copied from interface: Type

How many columns are used to persist this type?

Always the same as getSqlTypCodes(mapping).length.

Parameters:

mapping - The mapping object :/

Returns:

The number of columns

Throws:

MappingException - Generally indicates an issue accessing the passed mapping object.

getSqlTypeCodes

public int[] getSqlTypeCodes(Mapping mapping)
                      throws MappingException

Description copied from interface: Type

Return the JDBC types codes as defined by Types or SqlTypes for the columns mapped by this type.

The number of elements in this array must match the return from Type.getColumnSpan(org.hibernate.engine.spi.Mapping).

Parameters:

mapping - The mapping object :/

Returns:

The JDBC type codes.

Throws:

MappingException - Generally indicates an issue accessing the passed mapping object.

getForeignKeyDirection

public ForeignKeyDirection getForeignKeyDirection()

Description copied from interface: AssociationType

Get the foreign key directionality of this association

useLHSPrimaryKey

public boolean useLHSPrimaryKey()

Description copied from interface: AssociationType

Is the primary key of the owning entity table to be used in the join?

isModified

public boolean isModified(Object old,
 Object current,
 boolean[] checkable,
 SharedSessionContractImplementor session)
                   throws HibernateException

Description copied from interface: Type

Has the value been modified compared to the current database state? The difference between this and the Type.isDirty(java.lang.Object, java.lang.Object, org.hibernate.engine.spi.SharedSessionContractImplementor) methods is that here we need to account for "partially" built values. This is really only an issue with association types. For most type implementations it is enough to simply delegate to Type.isDirty(java.lang.Object, java.lang.Object, org.hibernate.engine.spi.SharedSessionContractImplementor).

Specified by:

isModified in interface Type

Overrides:

isModified in class AbstractType

Parameters:

old - the database state, in a "hydrated" form, with identifiers unresolved

current - the current state of the object

checkable - which columns are actually checkable

session - The session from which the request originated.

Returns:

true if the field has been modified

Throws:

HibernateException - A problem occurred performing the checking

disassemble

public Serializable disassemble(Object value,
 SharedSessionContractImplementor session,
 Object owner)
                         throws HibernateException

Description copied from interface: Type

Return a disassembled representation of the object. This is the representation that is stored in the second-level cache.

A reference to an associated entity should be disassembled to its primary key value.

Specified by:

disassemble in interface Type

Overrides:

disassemble in class AbstractType

Parameters:

value - the value to cache

session - the originating session

owner - optional parent entity object (needed for collections)

Returns:

the disassembled, deep cloned state

Throws:

HibernateException - An error from Hibernate

disassemble

public Serializable disassemble(Object value,
 SessionFactoryImplementor sessionFactory)
                         throws HibernateException

Description copied from interface: Type

Return a disassembled representation of the object. This is the representation that is stored in the second-level cache.

A reference to an associated entity should be disassembled to its primary key value.

A high-quality implementation of this method should ensure that:

 Objects.equals(disassemble(x,s), disassemble(y,s)) == isEqual(x,y,sf)
 

and that:

 Objects.equals(x, assemble(disassemble(x,s),s,o))
 

That is, the implementation must be consistent with Type.isEqual(Object, Object, SessionFactoryImplementor) and with Type.assemble(Serializable, SharedSessionContractImplementor, Object).

Specified by:

disassemble in interface Type

Overrides:

disassemble in class AbstractType

Parameters:

value - the value to cache

sessionFactory - the session factory

Returns:

the disassembled, deep cloned state

Throws:

HibernateException - An error from Hibernate

assemble

public Object assemble(Serializable oid,
 SharedSessionContractImplementor session,
 Object owner)
                throws HibernateException

Description copied from interface: Type

Reconstruct the object from its disassembled state. This function is the inverse of Type.disassemble(Object, SharedSessionContractImplementor, Object).

Specified by:

assemble in interface Type

Overrides:

assemble in class AbstractType

Parameters:

oid - the disassembled state from the cache

session - the originating session

owner - the parent entity object

Returns:

the (re)assembled object

Throws:

HibernateException - An error from Hibernate

beforeAssemble

public void beforeAssemble(Serializable oid,
 SharedSessionContractImplementor session)

Description copied from interface: Type

Called before assembling a query result set from the query cache, to allow batch fetching of entities missing from the second-level cache.

Specified by:

beforeAssemble in interface Type

Overrides:

beforeAssemble in class AbstractType

Parameters:

oid - The key

session - The originating session

toColumnNullness

public boolean[] toColumnNullness(Object value,
 Mapping mapping)

Description copied from interface: Type

Given an instance of the type, return an array of boolean values indicating which mapped columns would be null.

Parameters:

value - an instance of the type

mapping - The mapping abstraction

Returns:

array indicating column nullness for a value instance

isDirty

public boolean isDirty(Object old,
 Object current,
 SharedSessionContractImplementor session)
                throws HibernateException

Description copied from interface: Type

Should the parent be considered dirty, given both the old and current value?

Specified by:

isDirty in interface Type

Overrides:

isDirty in class AbstractType

Parameters:

old - the old value

current - the current value

session - The session from which the request originated.

Returns:

true if the field is dirty

Throws:

HibernateException - A problem occurred performing the checking

isDirty

public boolean isDirty(Object old,
 Object current,
 boolean[] checkable,
 SharedSessionContractImplementor session)
                throws HibernateException

Description copied from interface: Type

Should the parent be considered dirty, given both the old and current value?

Parameters:

old - the old value

current - the current value

checkable - An array of booleans indicating which columns making up the value are actually checkable

session - The session from which the request originated.

Returns:

true if the field is dirty

Throws:

HibernateException - A problem occurred performing the checking