private object DoSave(
object theObj,
Key key,
IClassPersister persister,
bool replicate,
bool useIdentityColumn,
Cascades.CascadingAction cascadeAction,
object anything )
{
if( persister.ImplementsValidatable )
{
( ( IValidatable ) theObj ).Validate();
}
object id;
if( useIdentityColumn )
{
id = null;
ExecuteInserts();
}
else
{
id = key.Identifier;
}
// Put a placeholder in entries, so we don't recurse back to try and Save() the
// same object again. QUESTION: Should this be done before OnSave() is called?
// likewise, should it be done before OnUpdate()?
AddEntry( theObj, Status.Saving, null, id, null, LockMode.Write, useIdentityColumn, persister, false ); // okay if id is null here
// cascade-save to many-to-one BEFORE the parent is saved
cascading++;
try
{
Cascades.Cascade( this, persister, theObj, cascadeAction, CascadePoint.CascadeBeforeInsertAfterDelete, anything );
}
finally
{
cascading--;
}
object[ ] values = persister.GetPropertyValues( theObj );
IType[ ] types = persister.PropertyTypes;
bool substitute = false;
if( !replicate )
{
substitute = interceptor.OnSave( theObj, id, values, persister.PropertyNames, types );
// Keep the existing version number in the case of replicate!
if( persister.IsVersioned )
{
// IsUnsavedVersion bit below is NHibernate-specific
substitute = Versioning.SeedVersion(
values, persister.VersionProperty, persister.VersionType, persister.IsUnsavedVersion( values )
) || substitute;
}
}
if( persister.HasCollections )
{
// TODO: make OnReplicateVisitor extend WrapVisitor
if( replicate )
{
OnReplicateVisitor visitor = new OnReplicateVisitor( this, id );
visitor.ProcessValues( values, types );
}
WrapVisitor visitor2 = new WrapVisitor( this );
// substitutes into values by side-effect
visitor2.ProcessValues( values, types );
substitute = substitute || visitor2.IsSubstitutionRequired;
}
if( substitute )
{
persister.SetPropertyValues( theObj, values );
}
TypeFactory.DeepCopy( values, types, persister.PropertyUpdateability, values );
NullifyTransientReferences( values, types, useIdentityColumn, theObj );
CheckNullability( values, persister, false );
if( useIdentityColumn )
{
ScheduledIdentityInsertion insert = new ScheduledIdentityInsertion( values, theObj, persister, this );
Execute( insert );
id = insert.GeneratedId;
persister.SetIdentifier( theObj, id );
key = new Key( id, persister );
CheckUniqueness( key, theObj );
}
object version = Versioning.GetVersion( values, persister );
AddEntity( key, theObj );
AddEntry( theObj, Status.Loaded, values, id, version, LockMode.Write, useIdentityColumn, persister, replicate );
nonExists.Remove( key );
if( !useIdentityColumn )
{
insertions.Add( new ScheduledInsertion( id, values, theObj, version, persister, this ) );
}
// cascade-save to collections AFTER the collection owner was saved
cascading++;
try
{
Cascades.Cascade( this, persister, theObj, cascadeAction, CascadePoint.CascadeAfterInsertBeforeDelete, anything );
}
finally
{
cascading--;
}
return id;
}
private void FlushEntity( object obj, EntityEntry entry )
{
IClassPersister persister = entry.Persister;
Status status = entry.Status;
CheckId( obj, persister, entry.Id );
object[ ] values;
if( status == Status.Deleted )
{
//grab its state saved at deletion
values = entry.DeletedState;
}
else
{
//grab its current state
values = persister.GetPropertyValues( obj );
}
IType[ ] types = persister.PropertyTypes;
bool substitute = false;
if( persister.HasCollections )
{
// wrap up any new collections directly referenced by the object
// or its components
// NOTE: we need to do the wrap here even if its not "dirty",
// because nested collections need wrapping but changes to
// _them_ don't dirty the container. Also, for versioned
// data, we need to wrap before calling searchForDirtyCollections
WrapVisitor visitor = new WrapVisitor( this );
// substitutes into values by side-effect
visitor.ProcessValues( values, types );
substitute = visitor.IsSubstitutionRequired;
}
bool cannotDirtyCheck;
bool interceptorHandledDirtyCheck;
bool dirtyCheckDoneBySelect = false;
object[ ] currentPersistentState = null;
int[ ] dirtyProperties = interceptor.FindDirty( obj, entry.Id, values, entry.LoadedState, persister.PropertyNames, types );
if( dirtyProperties == null )
{
// interceptor returned null, so do the dirtycheck ourself, if possible
interceptorHandledDirtyCheck = false;
cannotDirtyCheck = entry.LoadedState == null; // object loaded by update()
if( !cannotDirtyCheck )
{
dirtyProperties = persister.FindDirty( values, entry.LoadedState, obj, this );
}
else
{
currentPersistentState = persister.GetCurrentPersistentState( entry.Id, entry.Version, this );
if( currentPersistentState != null )
{
dirtyProperties = persister.FindModified( currentPersistentState, values, obj, this );
cannotDirtyCheck = false;
dirtyCheckDoneBySelect = true;
}
}
}
else
{
// the interceptor handled the dirty checking
cannotDirtyCheck = false;
interceptorHandledDirtyCheck = true;
}
// compare to cached state (ignoring nested collections)
if( IsUpdateNecessary( persister, cannotDirtyCheck, status, dirtyProperties, values, types ) )
{
// its dirty!
if( log.IsDebugEnabled )
{
if( status == Status.Deleted )
{
log.Debug( "Updating deleted entity: " + MessageHelper.InfoString( persister, entry.Id ) );
}
else
{
log.Debug( "Updating entity: " + MessageHelper.InfoString( persister, entry.Id ) );
}
}
if( !entry.IsBeingReplicated )
{
// give the Interceptor a chance to modify property values
bool intercepted = interceptor.OnFlushDirty(
obj, entry.Id, values, entry.LoadedState, persister.PropertyNames, types );
//now we might need to recalculate the dirtyProperties array
if( intercepted && !cannotDirtyCheck && !interceptorHandledDirtyCheck )
{
if( dirtyCheckDoneBySelect )
{
dirtyProperties = persister.FindModified( currentPersistentState, values, obj, this );
}
else
{
dirtyProperties = persister.FindDirty( values, entry.LoadedState, obj, this );
}
}
// if the properties were modified by the Interceptor, we need to set them back to the object
substitute = substitute || intercepted;
}
// validate() instances of Validatable
if( status == Status.Loaded && persister.ImplementsValidatable )
{
( ( IValidatable ) obj ).Validate();
}
//increment the version number (if necessary)
object nextVersion = GetNextVersion( persister, values, entry );
// get the updated snapshot by cloning current state
object[ ] updatedState = null;
if( status == Status.Loaded )
{
updatedState = new object[values.Length];
TypeFactory.DeepCopy( values, types, persister.PropertyUpdateability, updatedState );
}
// if it was dirtied by a collection only
if( !cannotDirtyCheck && dirtyProperties == null )
{
dirtyProperties = ArrayHelper.EmptyIntArray;
}
CheckNullability( values, persister, true );
//note that we intentionally did _not_ pass in currentPersistentState!
updates.Add(
new ScheduledUpdate( entry.Id, values, dirtyProperties, entry.LoadedState, entry.Version, nextVersion, obj, updatedState, persister, this )
);
}
if( status == Status.Deleted )
{
//entry.status = Status.Gone;
}
else
{
// now update the object... has to be outside the main if block above (because of collections)
if( substitute )
{
persister.SetPropertyValues( obj, values );
}
// search for collections by reachability, updating their role.
// we don't want to touch collections reachable from a deleted object.
if( persister.HasCollections )
{
new FlushVisitor( this, obj ).ProcessValues( values, types );
}
}
}
