程序包 org.hibernate.type

类 ManyToOneType

java.lang.Object

org.hibernate.type.AbstractType

org.hibernate.type.EntityType

org.hibernate.type.ManyToOneType

所有已实现的接口:

Serializable, AssociationType, Type

public class ManyToOneType
extends EntityType

A many-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
ManyToOneType(ManyToOneType original, String superTypeEntityName)
ManyToOneType(TypeFactory.TypeScope scope, String referencedEntityName)	Creates a many-to-one association type with the given referenced entity.
ManyToOneType(TypeFactory.TypeScope scope, String referencedEntityName, boolean lazy)	Creates a many-to-one association type with the given referenced entity and the given laziness characteristic
ManyToOneType(TypeFactory.TypeScope scope, String referencedEntityName, boolean referenceToPrimaryKey, String uniqueKeyPropertyName, boolean lazy, boolean unwrapProxy, boolean ignoreNotFound, boolean isLogicalOneToOne)	已过时。 Use ManyToOneType(TypeFactory.TypeScope, String, boolean, String, String, boolean, boolean, boolean, boolean ) instead.
ManyToOneType(TypeFactory.TypeScope scope, String referencedEntityName, boolean referenceToPrimaryKey, String uniqueKeyPropertyName, String propertyName, boolean lazy, boolean unwrapProxy, boolean ignoreNotFound, boolean isLogicalOneToOne)
ManyToOneType(TypeFactory.TypeScope scope, String referencedEntityName, String uniqueKeyPropertyName, boolean lazy, boolean unwrapProxy, boolean isEmbeddedInXML, boolean ignoreNotFound, boolean isLogicalOneToOne)	已过时。 Use ManyToOneType(TypeFactory.TypeScope, String, boolean, String, String, boolean, boolean, boolean, 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.
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.
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 mapping)	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()	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)?
Object	resolve(Object value, SharedSessionContractImplementor session, Object owner, Boolean overridingEager)	The second phase of 2-phase loading.
int[]	sqlTypes(Mapping mapping)	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, isMutable, isNull, isReferenceToPrimaryKey, isSame, loadByUniqueKey, nullSafeGet, nullSafeGet, nullSafeSet, nullSafeSet, replace, requireIdentifierOrUniqueKeyType, resolve, resolveIdentifier, resolveIdentifier, scope, toLoggableString, toString

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

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

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

构造器详细资料

ManyToOneType

public ManyToOneType(TypeFactory.TypeScope scope,
                     String referencedEntityName)

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

参数:

scope - The scope for this instance.

referencedEntityName - The name iof the referenced entity

ManyToOneType

public ManyToOneType(TypeFactory.TypeScope scope,
                     String referencedEntityName,
                     boolean lazy)

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

参数:

scope - The scope for this instance.

referencedEntityName - The name iof the referenced entity

lazy - Should the association be handled lazily

ManyToOneType

@Deprecated
public ManyToOneType(TypeFactory.TypeScope scope,
                     String referencedEntityName,
                     String uniqueKeyPropertyName,
                     boolean lazy,
                     boolean unwrapProxy,
                     boolean isEmbeddedInXML,
                     boolean ignoreNotFound,
                     boolean isLogicalOneToOne)

已过时。

Use ManyToOneType(TypeFactory.TypeScope, String, boolean, String, String, boolean, boolean, boolean, boolean ) instead.

ManyToOneType

@Deprecated
public ManyToOneType(TypeFactory.TypeScope scope,
                     String referencedEntityName,
                     boolean referenceToPrimaryKey,
                     String uniqueKeyPropertyName,
                     boolean lazy,
                     boolean unwrapProxy,
                     boolean ignoreNotFound,
                     boolean isLogicalOneToOne)

已过时。

Use ManyToOneType(TypeFactory.TypeScope, String, boolean, String, String, boolean, boolean, boolean, boolean ) instead.

ManyToOneType

public ManyToOneType(TypeFactory.TypeScope scope,
                     String referencedEntityName,
                     boolean referenceToPrimaryKey,
                     String uniqueKeyPropertyName,
                     String propertyName,
                     boolean lazy,
                     boolean unwrapProxy,
                     boolean ignoreNotFound,
                     boolean isLogicalOneToOne)

ManyToOneType

public ManyToOneType(ManyToOneType original,
                     String superTypeEntityName)

方法详细资料

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.

getPropertyName

public String getPropertyName()

覆盖:

getPropertyName 在类中 EntityType

isAlwaysDirtyChecked

public boolean isAlwaysDirtyChecked()

从接口复制的说明: AssociationType

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

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.

isLogicalOneToOne

public boolean isLogicalOneToOne()

从类复制的说明: EntityType

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

覆盖:

isLogicalOneToOne 在类中 EntityType

返回:

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

getColumnSpan

public int getColumnSpan(Mapping mapping)
                  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:

mapping - 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 mapping)
               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:

mapping - 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.

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)

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?

isModified

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

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

抛出:

HibernateException - A problem occurred performing the checking

resolve

public Object resolve(Object value,
                      SharedSessionContractImplementor session,
                      Object owner,
                      Boolean overridingEager)
               throws HibernateException

从接口复制的说明: Type

The second phase of 2-phase loading. Only really pertinent for entities and collections. Here we resolve the identifier to an entity or collection instance

指定者:

resolve 在接口中 Type

覆盖:

resolve 在类中 EntityType

参数:

value - an identifier or value returned by hydrate()

session - the session

owner - the parent entity

overridingEager - can override eager from the mapping. For example because of LoadQueryInfluencers If null, then it does not override. If true or false then it overrides the mapping value.

返回:

the given value, or the value associated with the identifier

抛出:

HibernateException - An error from Hibernate

另请参阅:

Type.hydrate(java.sql.ResultSet, java.lang.String[], org.hibernate.engine.spi.SharedSessionContractImplementor, java.lang.Object)

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

beforeAssemble

public void beforeAssemble(Serializable oid,
                           SharedSessionContractImplementor session)

从接口复制的说明: Type

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

指定者:

beforeAssemble 在接口中 Type

覆盖:

beforeAssemble 在类中 AbstractType

参数:

oid - The key

session - The originating session

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

isDirty

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

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

抛出:

HibernateException - A problem occurred performing the checking

isDirty

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

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

抛出:

HibernateException - A problem occurred performing the checking