после того, как дочерняя коллекция с одним элементом загружается лениво при выполнении SQL-выбора для родителя, оператор update выполняется для этого потомка без явного вызова update.
Родительское отображение:
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
namespace="ParentEntity"
assembly="ParentEntity">
<class name="ParentEntity" table="ParentEntity">
<id name="Id" column="ParentEntityId" unsaved-value="-1">
<generator class="identity"/>
</id>
<bag name="addresses" access="field" inverse="true" cascade="all-delete-orphan" where="IsDeleted = 0">
<key column="ParentEntityId"/>
<one-to-many class="Address"/>
</bag>
</class>
</hibernate-mapping>
Реализация:
public class ParentEntity : IEntity<ParentEntity>, IAuditableEntity, IDeletableEntity
{
private ICollection<Address> addresses;
protected ParentEntity()
{
addresses = new List<Address>();
}
public virtual ICollection<Address> Addresses
{
get
{
return new List<Address>(addresses.Where(a => !a.IsDeleted && !a.Validity.IsExpired)).AsReadOnly();
}
private set
{
addresses = value;
}
}
public virtual ICollection<Address> ExpiredAddresses
{
get
{
return new List<Address>(addresses.Where(a => !a.IsDeleted && a.Validity.IsExpired)).AsReadOnly();
}
}
#region IAuditableEntity Members
public virtual EntityTimestamp Timestamp
{
get { return timestamp; }
set { timestamp = value; }
}
#endregion
public virtual bool AddAddress(Address address)
{
if (addresses.Contains(address) || ExpiredAddresses.Contains(address) )
return false;
address.ParentEntity = this;
addresses.Add(address);
return true;
}
public virtual bool RemoveAddress(Address address)
{
if (!addresses.Contains(address) && !ExpiredAddresses.Contains(address))
return false;
address.IsDeleted = true;
return true;
}
}
Дочернее отображение:
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2"
namespace="..."
assembly="...">
<class name="Address" table="Address">
<id name="Id" column="AddressId" unsaved-value="-1">
<generator class="identity"/>
</id>
<property name="Street" ></property>
<property name="StreetNumber" ></property>
<property name="PostOfficeBox" ></property>
<property name="IsDeleted" not-null="true" ></property>
<many-to-one name="City" not-null="true" column="CityId" lazy="false" cascade="none" fetch="join" class="City"></many-to-one>
<many-to-one name="Type" not-null="true" column="AddressTypeId" lazy="false" cascade="none" fetch="join" class="AddressType"></many-to-one>
<many-to-one name="ParentEntity" not-null="true" update="false" column="ParentEntityId" lazy="false" cascade="none" fetch="join" class="ParentEntity"></many-to-one>
<component name="Timestamp" class="EntityTimestamp">
<property name="CreatedOn" not-null="true" />
<component name="CreatedBy" class="User">
<property name="Name" not-null="true" column="CreatedBy" />
</component>
<property name="ChangedOn" not-null="true" />
<component name="ChangedBy" class="User">
<property name="Name" not-null="true" column="ChangedBy" />
</component>
</component>
</class>
</hibernate-mapping>
Дочерняя реализация:
public class Address : IEntity<Address>, IAuditableEntity, IDeletableEntity
{
// id etc...
private EntityTimestamp timestamp;
private City city;
private bool isDeleted;
private string street;
private string postOfficeBox;
private string streetNumber;
private Validity validity;
private AddressType type;
private ParentEntity parentEntity;
public virtual EntityTimestamp Timestamp
{
get { return timestamp; }
set { timestamp = value; }
}
public virtual bool IsDeleted
{
get { return isDeleted; }
set { isDeleted = value; }
}
public virtual string Street
{
get { return street; }
set { street = value; }
}
public virtual string StreetNumber
{
get { return streetNumber; }
set { streetNumber = value; }
}
public virtual string PostOfficeBox
{
get { return postOfficeBox; }
set { postOfficeBox = value; }
}
public virtual City City
{
get { return city; }
set { city = value; }
}
public virtual AddressType Type
{
get { return type; }
set { type = value; }
}
public virtual Validity Validity
{
get { return validity; }
set { validity = value; }
}
protected internal virtual ParentEntity ParentEntity
{
get { return parentEntity; }
set { parentEntity = value; }
}
protected Address()
{
}
public Address(Validity validity)
{
this.validity = validity;
}
}
Правовая отметка времени выглядит следующим образом:
открытый класс EntityTimestamp: IValueObject{private DateTime creationOn;
public virtual DateTime CreatedOn
{
get { return createdOn; }
private set { createdOn = value; }
}
private IUser createdBy;
public virtual IUser CreatedBy
{
get { return createdBy; }
private set { createdBy = value; }
}
private DateTime changedOn;
public virtual DateTime ChangedOn
{
get { return changedOn; }
private set { changedOn = value; }
}
private IUser changedBy;
public virtual IUser ChangedBy
{
get { return changedBy; }
private set { changedBy = value; }
}
protected EntityTimestamp()
{
}
private EntityTimestamp(DateTime createdOn, IUser createdBy, DateTime changedOn, IUser changedBy)
{
if (createdBy == null)
throw new ArgumentException("Created by user is null.");
if (changedBy == null)
throw new ArgumentException("Changed by user is null.");
this.createdOn = createdOn;
this.createdBy = createdBy;
this.changedBy = changedBy;
this.changedOn = changedOn;
}
public static EntityTimestamp New()
{
return new EntityTimestamp(new DateTimePrecise().Now, SecurityService.Current.GetCurrentUser(), new DateTimePrecise().Now, SecurityService.Current.GetCurrentUser());
}
public static EntityTimestamp New(IUser forUser)
{
return new EntityTimestamp(new DateTimePrecise().Now, forUser, new DateTimePrecise().Now, forUser);
}
public static EntityTimestamp NewUpdated(IUser forUser, EntityTimestamp oldTimestamp)
{
return new EntityTimestamp(oldTimestamp.CreatedOn, oldTimestamp.CreatedBy, new DateTimePrecise().Now, forUser);
}
public static EntityTimestamp NewUpdated(EntityTimestamp oldTimestamp)
{
return new EntityTimestamp(oldTimestamp.CreatedOn, oldTimestamp.CreatedBy, new DateTimePrecise().Now, SecurityService.Current.GetCurrentUser());
}
}
Временная метка устанавливается в прослушивателе событий:
public class EntitySaveEventListener : NHibernate.Event.Default.DefaultSaveEventListener
{
protected override object PerformSaveOrUpdate(SaveOrUpdateEvent e)
{
if (e.Entity is IAuditableEntity)
{
var entity = e.Entity as IAuditableEntity;
//todo: CascadeBeforeSave();
if (entity != null)
{
IsDirtyEntity(e.Session, e.Entity);
if (entity.IsNew)
{
entity.Timestamp = EntityTimestamp.New();
}
else
{
entity.Timestamp = EntityTimestamp.NewUpdated(entity.Timestamp);
}
}
}
return base.PerformSaveOrUpdate(e);
}
Поэтому при выполнении SQL-выбора для родителяобновление адреса объекта выполнено.
Используя другой метод, я уже проверил, передается ли адрес прослушивателю событий перед его автоматическим обновлением, если он грязный.Но все реквизиты кажутся одинаковыми.
Что бы это могло быть?Вам нужна дополнительная информация?
Метод, который я проверял, грязный ли адрес при обновлении:
public static Boolean IsDirtyEntity(ISession session, Object entity)
{
String className = NHibernateProxyHelper.GuessClass(entity).FullName;
ISessionImplementor sessionImpl = session.GetSessionImplementation();
IPersistenceContext persistenceContext = sessionImpl.PersistenceContext;
IEntityPersister persister = sessionImpl.Factory.GetEntityPersister(className);
EntityEntry oldEntry = sessionImpl.PersistenceContext.GetEntry(entity);
if ((oldEntry == null) && (entity is INHibernateProxy))
{
INHibernateProxy proxy = entity as INHibernateProxy;
Object obj = sessionImpl.PersistenceContext.Unproxy(proxy);
oldEntry = sessionImpl.PersistenceContext.GetEntry(obj);
}
Object [] oldState = oldEntry.LoadedState;
Object [] currentState = persister.GetPropertyValues(entity, sessionImpl.EntityMode);
Int32 [] dirtyProps = persister.FindDirty(currentState, oldState, entity, sessionImpl);
return (dirtyProps != null);
}
Отладка sql nhibernate:
// выбор родительской сущности
NHibernate.SQL: 2010-02-17 16: 18: 39,357 [21] DEBUG NHibernate.SQL [(null)] - SELECT * FROM(ВЫБРАТЬ spr. *, Spft. [Rank], ROW_NUMBER () OVER (ORDER BY spft. [Rank] DESC) AS RowNum FROM CONTAINSTABLE (ParentEntitySpecialTable, Computed, '"some text"') AS spft INNER JOIN ParentEntity spr ON spr.ParentEntityId = spft. [Key]
) AS Results
WHERE
RowNum BETWEEN (@p0 - 1) * @p1 + 1 AND @p2 * @p3
ORDER BY
[Rank] DESC;@p0 = 1, @p1 = 20, @p2 = 1, @p3 = 20
NHibernate.SQL: 2010-02-17 16: 18: 39,513 [21] DEBUG NHibernate.SQL [(null)] - ВЫБРАТЬ адрес 0_.ParentEntityId как ServiceP8_3_, address0_.AddressId как AddressId3_, address0_.AddressId как AddressId11_2_, address0_.Street как Street11_2_, address0_.StreetNumber как StreetNu3_11_2_, address0_.PostOfficeBox как PostOffi4_11_2_, address00.Id0.IdressT7_11_2_, addresses0_.ParentEntityId, как ServiceP8_11_2_, addresses0_.ValidityPeriodFrom как Validity9_11_2_, addresses0_.ValidityPeriodTo как Validit10_11_2_, addresses0_.CreatedOn как CreatedOn11_2_, addresses0_.CreatedBy как CreatedBy11_2_, addresses0_.ChangedOn как ChangedOn11_2_, addresses0_.ChangedBy как ChangedBy11_2_, city1_.CityId как CityId9_0_,city1_.IsDeleted, как IsDeleted9_0_, city1_.Name как Name9_0_, city1_.ZipCode как ZipCode9_0_, city1_.CountryId как CountryId9_0_, city1_.CreatedOn как CreatedOn9_0_, city1_.CreatedBy как CreatedBy9_0_, city1_.ChangedOn как ChangedOn9_0_, city1_.ChangedBy как ChangedBy9_0_, addresstyp2_.AddressTypeId в AddressT1_6_1_, addresstyp2_.IsDeleted как IsDeleted6_1_, addresstyp2_.IsSystemDefault как IsSystem3_6_1_, addresstyp2_.Name как Name6_1_, addresstyp2 _. [Key], как column5_6_1_, addresstyp2_.CreatedOn в CreatedOn6_1_, addresstyp2_.CreatedBy как CreatedBy6_1_, addresstyp2_.ChangedOn как ChangedOn6_1_, addresstyp2_.ChangedBy as ChangedBy6_1_ ОТ адресной рекламыdress0_ внутреннее соединение Город city1_ на адресах 0_.CityId = city1_.CityId внутреннее объединение AddressType addresstyp2_ для address0_.AddressTypeId = addresstyp2_.AddressTypeId WHERE (address0_.IsDeleted = 0) и address0__p_p_p_setup_p0_p0_p0_p0_p0_p0_p0_p_0_p0_0(Управляемый): загруженный 'CountryProxyAssembly' 'aspnet_wp.exe' (Управляемый): Загруженный 'CountryProxyModule'
// адрес обновляется
NHibernate.SQL:
2010-02-17 16: 18: 51,607 [21] DEBUG NHibernate.SQL [(null)] - Пакетные команды: команда 0: ОБНОВЛЕНИЕ Адрес SET SET Street = @ p0, StreetNumber = @ p1,PostOfficeBox = @ p2, IsDeleted = @ p3,
CityId = @ p4, AddressTypeId = @ p5,
ValidityPeriodFrom = @ p6,
ValidityPeriodTo = @ p7, CreatedOn =
@ p8, CreatedBy = @ p9, ChangedOn =
@ p10, ChangedBy = @ p11 ГДЕ AddressId
= @ p12; @ p0 = 'fff', @ p1 = '', @ p2 = NULL, @ p3 = False, @ p4 =
116644, @ p5 = 1, @ p6 = 20.01.2010
17:28:15, @ p7 = 31.12.9999 00:00:00,
@ p8 = 20.01.2010 17:29:52, @ p9 =
'fff', @ p10 = 17.02.2010 16:18:51,
@ p11 = 'fff', @ p12 = 117390
// адрес обновлен
NHibernate.SQL:
2010-02-17 16: 19: 03,748 [21] DEBUG
NHibernate.SQL [(null)] - Пакетная обработка
команды: команда 0: ОБНОВЛЕНИЕ адреса УСТАНОВКА
Street = @ p0, StreetNumber = @ p1,
PostOfficeBox = @ p2, IsDeleted = @ p3,
CityId = @ p4, AddressTypeId = @ p5,
ValidityPeriodFrom = @ p6,
ValidityPeriodTo = @ p7, CreatedOn =
@ p8, CreatedBy = @ p9, ChangedOn =
@ p10, ChangedBy = @ p11 ГДЕ AddressId
= @ p12; @ p0 = 'fff', @ p1 = '', @ p2 = NULL, @ p3 = False, @ p4 =
116644, @ p5 = 1, @ p6 = 20.01.2010
17:28:15, @ p7 = 31.12.9999 00:00:00,
@ p8 = 20.01.2010 17:29:52, @ p9 =
'fff', @ p10 = 17.02.2010 16:19:03,
@ p11 = 'fff', @ p12 = 117390