程序包 org.hibernate.type

类 OneToOneType

java.lang.Object

org.hibernate.type.AbstractType

org.hibernate.type.EntityType

org.hibernate.type.OneToOneType

所有已实现的接口:

Serializable, AssociationType, Type

直接已知子类:

SpecialOneToOneType

public class OneToOneType
extends EntityType

A one-to-one association to an entity

作者:

Gavin King

另请参阅:

序列化表格

字段概要

从类继承的字段 org.hibernate.type.EntityType

uniqueKeyPropertyName

从类继承的字段 org.hibernate.type.AbstractType

LEGACY_DEFAULT_SIZE, LEGACY_DICTATED_SIZE

构造器概要

构造器

构造器	说明
OneToOneType(OneToOneType original, String superTypeEntityName)
OneToOneType(TypeFactory.TypeScope scope, String referencedEntityName, ForeignKeyDirection foreignKeyType, boolean referenceToPrimaryKey, String uniqueKeyPropertyName, boolean lazy, boolean unwrapProxy, String entityName, String propertyName)	已过时。 Use OneToOneType(TypeFactory.TypeScope, String, ForeignKeyDirection, boolean, String, boolean, boolean, String, String, boolean) instead.
OneToOneType(TypeFactory.TypeScope scope, String referencedEntityName, ForeignKeyDirection foreignKeyType, boolean referenceToPrimaryKey, String uniqueKeyPropertyName, boolean lazy, boolean unwrapProxy, String entityName, String propertyName, boolean constrained)
OneToOneType(TypeFactory.TypeScope scope, String referencedEntityName, ForeignKeyDirection foreignKeyType, String uniqueKeyPropertyName, boolean lazy, boolean unwrapProxy, String entityName, String propertyName)	已过时。 Use OneToOneType(TypeFactory.TypeScope, String, ForeignKeyDirection, boolean, String, boolean, boolean, String, String, boolean) instead.

方法概要

修饰符和类型	方法	说明
Object	assemble(Serializable oid, SharedSessionContractImplementor session, Object owner)	Reconstruct the object from its disassembled state.
Size[]	defaultSizes(Mapping mapping)	Defines the column sizes to use according to this type if the user did not explicitly say (and if no Type.dictatedSizes(org.hibernate.engine.spi.Mapping) were given).
Size[]	dictatedSizes(Mapping mapping)	Return the column sizes dictated by this type.
Serializable	disassemble(Object value, SharedSessionContractImplementor session, Object owner)	Return a disassembled representation of the object.
int	getColumnSpan(Mapping session)	How many columns are used to persist this type.
ForeignKeyDirection	getForeignKeyDirection()	Get the foreign key directionality of this association
String	getPropertyName()
Object	hydrate(ResultSet rs, String[] names, SharedSessionContractImplementor session, Object owner)	Extract a value from the JDBC result set.
boolean	isAlwaysDirtyChecked()	We don't need to dirty check one-to-one because of how assemble/disassemble is implemented and because a one-to-one association is never dirty
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	isModified(Object old, Object current, boolean[] checkable, SharedSessionContractImplementor session)	Has the value been modified compared to the current database state?
boolean	isNull(Object owner, SharedSessionContractImplementor session)
boolean	isNullable()	The nullability of the property.
boolean	isOneToOne()	Is the association modeled here defined as a 1-1 in the database (physical model)?
void	nullSafeSet(PreparedStatement st, Object value, int index, boolean[] settable, SharedSessionContractImplementor session)	Bind a value represented by an instance of the mapped class to the JDBC prepared statement, ignoring some columns as dictated by the 'settable' parameter.
int[]	sqlTypes(Mapping session)	Return the JDBC types codes (per Types) for the columns mapped by this type.
boolean[]	toColumnNullness(Object value, Mapping mapping)	Given an instance of the type, return an array of boolean, indicating which mapped columns would be null.
boolean	useLHSPrimaryKey()	Is the primary key of the owning entity table to be used in the join?

从类继承的方法 org.hibernate.type.EntityType

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

从类继承的方法 org.hibernate.type.AbstractType

beforeAssemble, getHashCode, isAnyType, isCollectionType, isComponentType, isEqual, replace, semiResolve

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.hibernate.type.Type

beforeAssemble, getHashCode, isAnyType, isCollectionType, isComponentType, isEqual, replace, semiResolve

构造器详细资料

OneToOneType

@Deprecated
public OneToOneType(TypeFactory.TypeScope scope,
                    String referencedEntityName,
                    ForeignKeyDirection foreignKeyType,
                    String uniqueKeyPropertyName,
                    boolean lazy,
                    boolean unwrapProxy,
                    String entityName,
                    String propertyName)

已过时。

Use OneToOneType(TypeFactory.TypeScope, String, ForeignKeyDirection, boolean, String, boolean, boolean, String, String, boolean) instead.

OneToOneType

@Deprecated
public OneToOneType(TypeFactory.TypeScope scope,
                    String referencedEntityName,
                    ForeignKeyDirection foreignKeyType,
                    boolean referenceToPrimaryKey,
                    String uniqueKeyPropertyName,
                    boolean lazy,
                    boolean unwrapProxy,
                    String entityName,
                    String propertyName)

已过时。

Use OneToOneType(TypeFactory.TypeScope, String, ForeignKeyDirection, boolean, String, boolean, boolean, String, String, boolean) instead.

OneToOneType

public OneToOneType(TypeFactory.TypeScope scope,
                    String referencedEntityName,
                    ForeignKeyDirection foreignKeyType,
                    boolean referenceToPrimaryKey,
                    String uniqueKeyPropertyName,
                    boolean lazy,
                    boolean unwrapProxy,
                    String entityName,
                    String propertyName,
                    boolean constrained)

OneToOneType

public OneToOneType(OneToOneType original,
                    String superTypeEntityName)

方法详细资料

getPropertyName

public String getPropertyName()

覆盖:

getPropertyName 在类中 EntityType

isNull

public boolean isNull(Object owner,
                      SharedSessionContractImplementor session)

覆盖:

isNull 在类中 EntityType

getColumnSpan

public int getColumnSpan(Mapping session)
                  throws MappingException

从接口复制的说明: Type

How many columns are used to persist this type. Always the same as sqlTypes(mapping).length

参数:

session - The mapping object :/

返回:

The number of columns

抛出:

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

sqlTypes

public int[] sqlTypes(Mapping session)
               throws MappingException

从接口复制的说明: Type

Return the JDBC types codes (per Types) for the columns mapped by this type.

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

参数:

session - The mapping object :/

返回:

The JDBC type codes.

抛出:

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

dictatedSizes

public Size[] dictatedSizes(Mapping mapping)
                     throws MappingException

从接口复制的说明: Type

Return the column sizes dictated by this type. For example, the mapping for a char/Character would have a dictated length limit of 1; for a string-based UUID would have a size limit of 36; etc.

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

参数:

mapping - The mapping object :/

返回:

The dictated sizes.

抛出:

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

defaultSizes

public Size[] defaultSizes(Mapping mapping)
                    throws MappingException

从接口复制的说明: Type

Defines the column sizes to use according to this type if the user did not explicitly say (and if no Type.dictatedSizes(org.hibernate.engine.spi.Mapping) were given).

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

参数:

mapping - The mapping object :/

返回:

The default sizes.

抛出:

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

toColumnNullness

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

从接口复制的说明: Type

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

参数:

value - an instance of the type

mapping - The mapping abstraction

返回:

array indicating column nullness for a value instance

nullSafeSet

public void nullSafeSet(PreparedStatement st,
                        Object value,
                        int index,
                        boolean[] settable,
                        SharedSessionContractImplementor session)

从接口复制的说明: Type

Bind a value represented by an instance of the mapped class to the JDBC prepared statement, ignoring some columns as dictated by the 'settable' parameter. Implementors should handle the possibility of null values. A multi-column type should bind parameters starting from index.

指定者:

nullSafeSet 在接口中 Type

覆盖:

nullSafeSet 在类中 EntityType

参数:

st - The JDBC prepared statement to which to bind

value - the object to write

index - starting parameter bind index

settable - an array indicating which columns to bind/ignore

session - The originating session

isOneToOne

public boolean isOneToOne()

从类复制的说明: EntityType

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

指定者:

isOneToOne 在类中 EntityType

返回:

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

isDirty

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

从接口复制的说明: Type

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

指定者:

isDirty 在接口中 Type

覆盖:

isDirty 在类中 AbstractType

参数:

old - the old value

current - the current value

session - The session from which the request originated.

返回:

true if the field is dirty

isDirty

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

从接口复制的说明: Type

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

参数:

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.

返回:

true if the field is dirty

isModified

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

从接口复制的说明: 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) here/

指定者:

isModified 在接口中 Type

覆盖:

isModified 在类中 AbstractType

参数:

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.

返回:

true if the field has been modified

getForeignKeyDirection

public ForeignKeyDirection getForeignKeyDirection()

从接口复制的说明: AssociationType

Get the foreign key directionality of this association

hydrate

public Object hydrate(ResultSet rs,
                      String[] names,
                      SharedSessionContractImplementor session,
                      Object owner)
               throws HibernateException,
                      SQLException

从接口复制的说明: Type

Extract a value from the JDBC result set. This is useful for 2-phase property initialization - the second phase is a call to Type.resolve(java.lang.Object, org.hibernate.engine.spi.SharedSessionContractImplementor, java.lang.Object) This hydrated value will be either:

• in the case of an entity or collection type, the key
• otherwise, the value itself

指定者:

hydrate 在接口中 Type

覆盖:

hydrate 在类中 AbstractType

参数:

rs - The JDBC result set

names - the column names making up this type value (use to read from result set)

session - The originating session

owner - the parent entity

返回:

An entity or collection key, or an actual value.

抛出:

HibernateException - An error from Hibernate

SQLException - An error from the JDBC driver

另请参阅:

Type.resolve(java.lang.Object, org.hibernate.engine.spi.SharedSessionContractImplementor, java.lang.Object)

isNullable

public boolean isNullable()

从类复制的说明: EntityType

The nullability of the property.

指定者:

isNullable 在类中 EntityType

返回:

The nullability of the property.

useLHSPrimaryKey

public boolean useLHSPrimaryKey()

从接口复制的说明: AssociationType

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

disassemble

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

从接口复制的说明: Type

Return a disassembled representation of the object. This is the value Hibernate will use in second level caching, so care should be taken to break values down to their simplest forms; for entities especially, this means breaking them down into their constituent parts.

指定者:

disassemble 在接口中 Type

覆盖:

disassemble 在类中 AbstractType

参数:

value - the value to cache

session - the originating session

owner - optional parent entity object (needed for collections)

返回:

the disassembled, deep cloned state

抛出:

HibernateException - An error from Hibernate

assemble

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

从接口复制的说明: Type

Reconstruct the object from its disassembled state. This method is the reciprocal of Type.disassemble(java.lang.Object, org.hibernate.engine.spi.SharedSessionContractImplementor, java.lang.Object)

指定者:

assemble 在接口中 Type

覆盖:

assemble 在类中 AbstractType

参数:

oid - the disassembled state from the cache

session - the originating session

owner - the parent entity object

返回:

the (re)assembled object

抛出:

HibernateException - An error from Hibernate

isAlwaysDirtyChecked

public boolean isAlwaysDirtyChecked()

We don't need to dirty check one-to-one because of how assemble/disassemble is implemented and because a one-to-one association is never dirty