public override async Task <object> DisassembleAsync(object value, ISessionImplementor session, object owner, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
return(value == null
? null
: new ObjectTypeCacheEntry
{
EntityName = session.BestGuessEntityName(value),
Id = await(ForeignKeys.GetEntityIdentifierIfNotUnsavedAsync(session.BestGuessEntityName(value), value, session, cancellationToken)).ConfigureAwait(false)
});
}
private void addCollectionChangeWorkUnit(AuditProcess auditProcess, ISessionImplementor session, string fromEntityName, RelationDescription relDesc, object value)
{
// relDesc.getToEntityName() doesn't always return the entity name of the value - in case
// of subclasses, this will be root class, no the actual class. So it can't be used here.
string toEntityName;
object id;
if (value is INHibernateProxy newValueAsProxy)
{
toEntityName = session.BestGuessEntityName(value);
id = newValueAsProxy.HibernateLazyInitializer.Identifier;
// We've got to initialize the object from the proxy to later read its state.
value = Toolz.GetTargetFromProxy(session, newValueAsProxy);
}
else
{
toEntityName = session.GuessEntityName(value);
var idMapper = VerCfg.EntCfg[toEntityName].IdMapper;
id = idMapper.MapToIdFromEntity(value);
}
var toPropertyNames = VerCfg.EntCfg.ToPropertyNames(fromEntityName, relDesc.FromPropertyName, toEntityName);
var toPropertyName = toPropertyNames.First();
auditProcess.AddWorkUnit(new CollectionChangeWorkUnit(session, toEntityName, toPropertyName, VerCfg, id, value));
}
public override async Task NullSafeSetAsync(DbCommand st, object value, int index, bool[] settable, ISessionImplementor session, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
object id;
string entityName;
if (value == null)
{
id = null;
entityName = null;
}
else
{
entityName = session.BestGuessEntityName(value);
id = await(ForeignKeys.GetEntityIdentifierIfNotUnsavedAsync(entityName, value, session, cancellationToken)).ConfigureAwait(false);
}
// metaType is assumed to be single-column type
if (settable == null || settable[0])
{
await(metaType.NullSafeSetAsync(st, entityName, index, session, cancellationToken)).ConfigureAwait(false);
}
if (settable == null)
{
await(identifierType.NullSafeSetAsync(st, id, index + 1, session, cancellationToken)).ConfigureAwait(false);
}
else
{
bool[] idsettable = new bool[settable.Length - 1];
Array.Copy(settable, 1, idsettable, 0, idsettable.Length);
await(identifierType.NullSafeSetAsync(st, id, index + 1, idsettable, session, cancellationToken)).ConfigureAwait(false);
}
}
public override void NullSafeSet(DbCommand st, object value, int index, bool[] settable, ISessionImplementor session)
{
object id;
string entityName;
if (value == null)
{
id = null;
entityName = null;
}
else
{
entityName = session.BestGuessEntityName(value);
id = ForeignKeys.GetEntityIdentifierIfNotUnsaved(entityName, value, session);
}
// metaType is assumed to be single-column type
if (settable == null || settable[0])
{
metaType.NullSafeSet(st, entityName, index, session);
}
if (settable == null)
{
identifierType.NullSafeSet(st, id, index + 1, session);
}
else
{
bool[] idsettable = new bool[settable.Length - 1];
Array.Copy(settable, 1, idsettable, 0, idsettable.Length);
identifierType.NullSafeSet(st, id, index + 1, idsettable, session);
}
}
private static object getIdentifier(ISessionImplementor session, object obj)
{
return(obj == null
? null
: (obj is INHibernateProxy objAsProxy
? objAsProxy.HibernateLazyInitializer.Identifier
: session.GetEntityPersister(session.BestGuessEntityName(obj), obj).GetIdentifier(obj)));
}
private static object Id(object component, ISessionImplementor session)
{
try
{
return(ForeignKeys.GetEntityIdentifierIfNotUnsaved(session.BestGuessEntityName(component), component, session));
}
catch (TransientObjectException)
{
return(null);
}
}
private static async Task <object> IdAsync(object component, ISessionImplementor session, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
try
{
return(await(ForeignKeys.GetEntityIdentifierIfNotUnsavedAsync(session.BestGuessEntityName(component), component, session, cancellationToken)).ConfigureAwait(false));
}
catch (TransientObjectException)
{
return(null);
}
}
public override object Replace(object original, object current, ISessionImplementor session, object owner,
IDictionary copiedAlready)
{
if (original == null)
{
return(null);
}
else
{
string entityName = session.BestGuessEntityName(original);
object id = ForeignKeys.GetEntityIdentifierIfNotUnsaved(entityName, original, session);
return(session.InternalLoad(entityName, id, false, false));
}
}
public override async Task <object> ReplaceAsync(object original, object current, ISessionImplementor session, object owner,
IDictionary copiedAlready, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
if (original == null)
{
return(null);
}
else
{
string entityName = session.BestGuessEntityName(original);
object id = await(ForeignKeys.GetEntityIdentifierIfNotUnsavedAsync(entityName, original, session, cancellationToken)).ConfigureAwait(false);
return(await(session.InternalLoadAsync(entityName, id, false, false, cancellationToken)).ConfigureAwait(false));
}
}
public Task <object> GetPropertyValueAsync(Object component, int i, ISessionImplementor session, CancellationToken cancellationToken)
{
if (cancellationToken.IsCancellationRequested)
{
return(Task.FromCanceled <object>(cancellationToken));
}
try
{
return(i == 0 ? Task.FromResult <object>(session.BestGuessEntityName(component)): IdAsync(component, session, cancellationToken));
}
catch (Exception ex)
{
return(Task.FromException <object>(ex));
}
}
public override bool IsModified(object old, object current, bool[] checkable, ISessionImplementor session)
{
if (current == null)
{
return(old != null);
}
if (old == null)
{
return(current != null);
}
ObjectTypeCacheEntry holder = (ObjectTypeCacheEntry)old;
bool[] idcheckable = new bool[checkable.Length - 1];
Array.Copy(checkable, 1, idcheckable, 0, idcheckable.Length);
return((checkable[0] && !holder.entityName.Equals(session.BestGuessEntityName(current))) ||
identifierType.IsModified(holder.id, Id(current, session), idcheckable, session));
}
public override async Task <bool> IsModifiedAsync(object old, object current, bool[] checkable, ISessionImplementor session, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
if (current == null)
{
return(old != null);
}
if (old == null)
{
return(current != null);
}
ObjectTypeCacheEntry holder = (ObjectTypeCacheEntry)old;
bool[] idcheckable = new bool[checkable.Length - 1];
Array.Copy(checkable, 1, idcheckable, 0, idcheckable.Length);
return((checkable[0] && !holder.entityName.Equals(session.BestGuessEntityName(current))) ||
await(identifierType.IsModifiedAsync(holder.id, await(IdAsync(current, session, cancellationToken)).ConfigureAwait(false), idcheckable, session, cancellationToken)).ConfigureAwait(false));
}
public virtual async Task OnLoadAsync(LoadEvent @event, LoadType loadType, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
ISessionImplementor source = @event.Session;
IEntityPersister persister;
if (@event.InstanceToLoad != null)
{
@event.EntityClassName = source.BestGuessEntityName(@event.InstanceToLoad); //the load() which takes an entity does not pass an entityName
persister = source.GetEntityPersister(@event.EntityClassName, @event.InstanceToLoad);
}
else
{
persister = GetEntityPersister(source.Factory, @event.EntityClassName);
}
if (persister == null)
{
var message = new StringBuilder(512);
message.AppendLine(string.Format("Unable to locate persister for the entity named '{0}'.", @event.EntityClassName));
message.AppendLine("The persister define the persistence strategy for an entity.");
message.AppendLine("Possible causes:");
message.AppendLine(string.Format(" - The mapping for '{0}' was not added to the NHibernate configuration.", @event.EntityClassName));
throw new HibernateException(message.ToString());
}
if (persister.IdentifierType.IsComponentType)
{
// skip this check for composite-ids relating to dom4j entity-mode;
// alternatively, we could add a check to make sure the incoming id value is
// an instance of Element...
}
else
{
System.Type idClass = persister.IdentifierType.ReturnedClass;
if (idClass != null && !idClass.IsInstanceOfType(@event.EntityId) &&
!(@event.EntityId is DelayedPostInsertIdentifier))
{
throw new TypeMismatchException("Provided id of the wrong type. Expected: " + idClass + ", got " + @event.EntityId.GetType());
}
}
EntityKey keyToLoad = source.GenerateEntityKey(@event.EntityId, persister);
try
{
if (loadType.IsNakedEntityReturned)
{
//do not return a proxy!
//(this option indicates we are initializing a proxy)
@event.Result = await(LoadAsync(@event, persister, keyToLoad, loadType, cancellationToken)).ConfigureAwait(false);
}
else
{
//return a proxy if appropriate
if (@event.LockMode == LockMode.None)
{
@event.Result = await(ProxyOrLoadAsync(@event, persister, keyToLoad, loadType, cancellationToken)).ConfigureAwait(false);
}
else
{
@event.Result = await(LockAndLoadAsync(@event, persister, keyToLoad, loadType, source, cancellationToken)).ConfigureAwait(false);
}
}
}
catch (HibernateException e)
{
log.Info(e, "Error performing load command");
throw;
}
}
private static object Id(object component, ISessionImplementor session)
{
try
{
return ForeignKeys.GetEntityIdentifierIfNotUnsaved(session.BestGuessEntityName(component), component, session);
}
catch (TransientObjectException)
{
return null;
}
}
public string BestGuessEntityName(object entity)
{
return(_session.BestGuessEntityName(entity));
}
public async Task <object[]> GetPropertyValuesAsync(object component, ISessionImplementor session, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
return(new object[] { session.BestGuessEntityName(component), await(IdAsync(component, session, cancellationToken)).ConfigureAwait(false) });
}
private void addCollectionChangeWorkUnitToAuditProcess(ISessionImplementor session, AuditProcess auditProcess, object value)
{
// relDesc.getToEntityName() doesn't always return the entity name of the value - in case
// of subclasses, this will be root class, no the actual class. So it can't be used here.
string toEntityName;
object id;
var newValueAsProxy = value as INHibernateProxy;
if (newValueAsProxy != null)
{
toEntityName = session.BestGuessEntityName(value);
id = newValueAsProxy.HibernateLazyInitializer.Identifier;
// We've got to initialize the object from the proxy to later read its state.
value = Toolz.GetTargetFromProxy((ISession) session, newValueAsProxy);
}
else
{
toEntityName = session.GuessEntityName(value);
var idMapper = VerCfg.EntCfg[toEntityName].IdMapper;
id = idMapper.MapToIdFromEntity(value);
}
auditProcess.AddWorkUnit(new CollectionChangeWorkUnit(session, toEntityName, VerCfg, id, value));
}
private void GenerateBidirectionalCollectionChangeWorkUnits(AuditSync verSync, IEntityPersister entityPersister,
String entityName, Object[] newState, Object[] oldState,
ISessionImplementor session)
{
// Checking if this is enabled in configuration ...
if (!verCfg.GlobalCfg.isGenerateRevisionsForCollections())
{
return;
}
// Checks every property of the entity, if it is an "owned" to-one relation to another entity.
// If the value of that property changed, and the relation is bi-directional, a new revision
// for the related entity is generated.
String[] propertyNames = entityPersister.PropertyNames;
for (int i = 0; i < propertyNames.GetLength(0); i++)
{
String propertyName = propertyNames[i];
RelationDescription relDesc = verCfg.EntCfg.GetRelationDescription(entityName, propertyName);
if (relDesc != null && relDesc.Bidirectional && relDesc.RelationType == RelationType.TO_ONE &&
relDesc.Insertable)
{
// Checking for changes
Object oldValue = oldState == null ? null : oldState[i];
Object newValue = newState == null ? null : newState[i];
if (!Toolz.EntitiesEqual(session, oldValue, newValue))
{
// We have to generate changes both in the old collection (size decreses) and new collection
// (size increases).
//<TODO Simon: doua if-uri cu cod duplicat, refact.
if (newValue != null)
{
// relDesc.getToEntityName() doesn't always return the entity name of the value - in case
// of subclasses, this will be root class, no the actual class. So it can't be used here.
String toEntityName;
// Java: Serializable id
object id;
if (newValue is INHibernateProxy)
{
INHibernateProxy hibernateProxy = (INHibernateProxy)newValue;
toEntityName = session.BestGuessEntityName(newValue);
id = hibernateProxy.HibernateLazyInitializer.Identifier;
// We've got to initialize the object from the proxy to later read its state.
newValue = NHibernate.Envers.Tools.Toolz.GetTargetFromProxy(session.Factory, hibernateProxy);
}
else
{
toEntityName = session.GuessEntityName(newValue);
IIdMapper idMapper = verCfg.EntCfg[toEntityName].GetIdMapper();
id = idMapper.MapToIdFromEntity(newValue);
}
verSync.AddWorkUnit(new CollectionChangeWorkUnit(session, toEntityName, verCfg, id, newValue));
}
if (oldValue != null)
{
String toEntityName;
object id;
if (oldValue is INHibernateProxy)
{
INHibernateProxy hibernateProxy = (INHibernateProxy)oldValue;
toEntityName = session.BestGuessEntityName(oldValue);
id = hibernateProxy.HibernateLazyInitializer.Identifier;
// We've got to initialize the object as we'll read it's state anyway.
oldValue = Toolz.GetTargetFromProxy(session.Factory, hibernateProxy);
}
else
{
toEntityName = session.GuessEntityName(oldValue);
IIdMapper idMapper = verCfg.EntCfg[toEntityName].GetIdMapper();
id = idMapper.MapToIdFromEntity(oldValue);
}
verSync.AddWorkUnit(new CollectionChangeWorkUnit(session, toEntityName, verCfg, id, oldValue));
}
}
}
}
}
public override object Disassemble(object value, ISessionImplementor session, object owner)
{
return value == null ? null :
new ObjectTypeCacheEntry(session.BestGuessEntityName(value),
ForeignKeys.GetEntityIdentifierIfNotUnsaved(session.BestGuessEntityName(value), value, session));
}
public override void NullSafeSet(IDbCommand st, object value, int index, bool[] settable, ISessionImplementor session)
{
object id;
string entityName;
if (value == null)
{
id = null;
entityName = null;
}
else
{
entityName = session.BestGuessEntityName(value);
id = ForeignKeys.GetEntityIdentifierIfNotUnsaved(entityName, value, session);
}
// metaType is assumed to be single-column type
if (settable == null || settable[0])
{
metaType.NullSafeSet(st, entityName, index, session);
}
if (settable == null)
{
identifierType.NullSafeSet(st, id, index + 1, session);
}
else
{
bool[] idsettable = new bool[settable.Length - 1];
Array.Copy(settable, 1, idsettable, 0, idsettable.Length);
identifierType.NullSafeSet(st, id, index + 1, idsettable, session);
}
}
public object GetPropertyValue(Object component, int i, ISessionImplementor session)
{
return(i == 0 ? session.BestGuessEntityName(component) : Id(component, session));
}
public object[] GetPropertyValues(object component, ISessionImplementor session)
{
return(new object[] { session.BestGuessEntityName(component), Id(component, session) });
}
public override object Replace(object original, object current, ISessionImplementor session, object owner,
IDictionary copiedAlready)
{
if (original == null)
{
return null;
}
else
{
string entityName = session.BestGuessEntityName(original);
object id = ForeignKeys.GetEntityIdentifierIfNotUnsaved(entityName, original, session);
return session.InternalLoad(entityName, id, false, false);
}
}
public override object Disassemble(object value, ISessionImplementor session, object owner)
{
return(value == null ? null :
new ObjectTypeCacheEntry(session.BestGuessEntityName(value),
ForeignKeys.GetEntityIdentifierIfNotUnsaved(session.BestGuessEntityName(value), value, session)));
}
public String bestGuessEntityName(Object obj)
{
return(delegat.BestGuessEntityName(obj));
}
public object GetPropertyValue(Object component, int i, ISessionImplementor session)
{
return i == 0 ? session.BestGuessEntityName(component) : Id(component, session);
}
public object[] GetPropertyValues(object component, ISessionImplementor session)
{
return new object[] { session.BestGuessEntityName(component), Id(component, session) };
}
public override bool IsModified(object old, object current, bool[] checkable, ISessionImplementor session)
{
if (current == null)
return old != null;
if (old == null)
return current != null;
ObjectTypeCacheEntry holder = (ObjectTypeCacheEntry)old;
bool[] idcheckable = new bool[checkable.Length - 1];
Array.Copy(checkable, 1, idcheckable, 0, idcheckable.Length);
return (checkable[0] && !holder.entityName.Equals(session.BestGuessEntityName(current))) ||
identifierType.IsModified(holder.id, Id(current, session), idcheckable, session);
}
private void GenerateBidirectionalCollectionChangeWorkUnits(AuditSync verSync, IEntityPersister entityPersister,
String entityName, Object[] newState, Object[] oldState,
ISessionImplementor session) {
// Checking if this is enabled in configuration ...
if (!verCfg.GlobalCfg.isGenerateRevisionsForCollections()) {
return;
}
// Checks every property of the entity, if it is an "owned" to-one relation to another entity.
// If the value of that property changed, and the relation is bi-directional, a new revision
// for the related entity is generated.
String[] propertyNames = entityPersister.PropertyNames;
for (int i=0; i<propertyNames.GetLength(0); i++) {
String propertyName = propertyNames[i];
RelationDescription relDesc = verCfg.EntCfg.GetRelationDescription(entityName, propertyName);
if (relDesc != null && relDesc.Bidirectional && relDesc.RelationType == RelationType.TO_ONE &&
relDesc.Insertable) {
// Checking for changes
Object oldValue = oldState == null ? null : oldState[i];
Object newValue = newState == null ? null : newState[i];
if (!Toolz.EntitiesEqual(session, oldValue, newValue)) {
// We have to generate changes both in the old collection (size decreses) and new collection
// (size increases).
//<TODO Simon: doua if-uri cu cod duplicat, refact.
if (newValue != null) {
// relDesc.getToEntityName() doesn't always return the entity name of the value - in case
// of subclasses, this will be root class, no the actual class. So it can't be used here.
String toEntityName;
// Java: Serializable id
object id;
if (newValue is INHibernateProxy) {
INHibernateProxy hibernateProxy = (INHibernateProxy) newValue;
toEntityName = session.BestGuessEntityName(newValue);
id = hibernateProxy.HibernateLazyInitializer.Identifier;
// We've got to initialize the object from the proxy to later read its state.
newValue = NHibernate.Envers.Tools.Toolz.GetTargetFromProxy(session.Factory, hibernateProxy);
} else {
toEntityName = session.GuessEntityName(newValue);
IIdMapper idMapper = verCfg.EntCfg[toEntityName].GetIdMapper();
id = idMapper.MapToIdFromEntity(newValue);
}
verSync.AddWorkUnit(new CollectionChangeWorkUnit(session, toEntityName, verCfg, id, newValue));
}
if (oldValue != null) {
String toEntityName;
object id;
if(oldValue is INHibernateProxy) {
INHibernateProxy hibernateProxy = (INHibernateProxy) oldValue;
toEntityName = session.BestGuessEntityName(oldValue);
id = hibernateProxy.HibernateLazyInitializer.Identifier;
// We've got to initialize the object as we'll read it's state anyway.
oldValue = Toolz.GetTargetFromProxy(session.Factory, hibernateProxy);
} else {
toEntityName = session.GuessEntityName(oldValue);
IIdMapper idMapper = verCfg.EntCfg[toEntityName].GetIdMapper();
id = idMapper.MapToIdFromEntity(oldValue);
}
verSync.AddWorkUnit(new CollectionChangeWorkUnit(session, toEntityName, verCfg, id, oldValue));
}
}
}
}
}
