private void DetectKeyChange(InternalEntityEntry entry, IProperty property, Sidecar snapshot)
{
if (!snapshot.HasValue(property))
{
return;
}
var keys = property.FindContainingKeys().ToList();
var foreignKeys = property.FindContainingForeignKeys(entry.EntityType).ToList();
if (keys.Count > 0 ||
foreignKeys.Count > 0)
{
var snapshotValue = snapshot[property];
var currentValue = entry[property];
// Note that mutation of a byte[] key is not supported or detected, but two different instances
// of byte[] with the same content must be detected as equal.
if (!StructuralComparisons.StructuralEqualityComparer.Equals(currentValue, snapshotValue))
{
var stateManager = entry.StateManager;
if (foreignKeys.Count > 0)
{
stateManager.Notify.ForeignKeyPropertyChanged(entry, property, snapshotValue, currentValue);
foreach (var foreignKey in foreignKeys)
{
stateManager.UpdateDependentMap(entry, snapshot.GetDependentKeyValue(foreignKey), foreignKey);
}
}
if (keys.Count > 0)
{
foreach (var key in keys)
{
stateManager.UpdateIdentityMap(entry, snapshot.GetPrincipalKeyValue(key), key);
}
stateManager.Notify.PrincipalKeyPropertyChanged(entry, property, snapshotValue, currentValue);
}
snapshot.TakeSnapshot(property);
}
}
}
public virtual void SetPropertyModified([NotNull] IProperty property, bool isModified = true)
{
// TODO: Restore original value to reject changes when isModified is false
// Issue #742
var currentState = _stateData.EntityState;
if (currentState == EntityState.Added ||
currentState == EntityState.Detached)
{
MarkAsTemporary(property, isTemporary: false);
OriginalValues.TakeSnapshot(property);
}
if ((currentState != EntityState.Modified &&
currentState != EntityState.Unchanged)
// TODO: Consider allowing computed properties to be forcibly marked as modified
// Issue #711
|| property.IsStoreComputed)
{
return;
}
if (isModified && property.IsReadOnly)
{
throw new NotSupportedException(Strings.PropertyReadOnly(property.Name, EntityType.Name));
}
_stateData.FlagProperty(property.Index, isModified);
// Don't change entity state if it is Added or Deleted
if (isModified && currentState == EntityState.Unchanged)
{
StateManager.Notify.StateChanging(this, EntityState.Modified);
_stateData.EntityState = EntityState.Modified;
StateManager.Notify.StateChanged(this, currentState);
}
else if (!isModified &&
!_stateData.AnyPropertiesFlagged())
{
StateManager.Notify.StateChanging(this, EntityState.Unchanged);
_stateData.EntityState = EntityState.Unchanged;
StateManager.Notify.StateChanged(this, currentState);
}
}
private void DetectKeyChange(InternalEntityEntry entry, IProperty property, Sidecar snapshot)
{
if (!snapshot.HasValue(property))
{
return;
}
// TODO: Perf: make it fast to check if a property is part of any key
var isPrimaryKey = property.IsPrimaryKey();
var isPrincipalKey = _model.GetReferencingForeignKeys(property).Any();
var isForeignKey = property.IsForeignKey();
if (isPrimaryKey ||
isPrincipalKey ||
isForeignKey)
{
var snapshotValue = snapshot[property];
var currentValue = entry[property];
// Note that mutation of a byte[] key is not supported or detected, but two different instances
// of byte[] with the same content must be detected as equal.
if (!StructuralComparisons.StructuralEqualityComparer.Equals(currentValue, snapshotValue))
{
if (isForeignKey)
{
entry.StateManager.Notify.ForeignKeyPropertyChanged(entry, property, snapshotValue, currentValue);
}
if (isPrimaryKey)
{
entry.StateManager.UpdateIdentityMap(entry, snapshot.GetPrimaryKeyValue());
}
if (isPrincipalKey)
{
entry.StateManager.Notify.PrincipalKeyPropertyChanged(entry, property, snapshotValue, currentValue);
}
snapshot.TakeSnapshot(property);
}
}
}
public virtual void SetPropertyModified([NotNull] IProperty property, bool isModified = true)
{
// TODO: Restore original value to reject changes when isModified is false
// Issue #742
var currentState = _stateData.EntityState;
if (currentState == EntityState.Added ||
currentState == EntityState.Detached)
{
MarkAsTemporary(property, isTemporary: false);
OriginalValues.TakeSnapshot(property);
}
if (currentState != EntityState.Modified &&
currentState != EntityState.Unchanged)
{
return;
}
if (isModified && property.IsKey())
{
throw new NotSupportedException(CoreStrings.KeyReadOnly(property.Name, EntityType.DisplayName()));
}
_stateData.FlagProperty(property.Index, PropertyFlag.TemporaryOrModified, isModified);
// Don't change entity state if it is Added or Deleted
if (isModified && currentState == EntityState.Unchanged)
{
StateManager.Notify.StateChanging(this, EntityState.Modified);
_stateData.EntityState = EntityState.Modified;
StateManager.Notify.StateChanged(this, currentState);
}
else if (!isModified &&
!_stateData.AnyPropertiesFlagged(PropertyFlag.TemporaryOrModified))
{
StateManager.Notify.StateChanging(this, EntityState.Unchanged);
_stateData.EntityState = EntityState.Unchanged;
StateManager.Notify.StateChanged(this, currentState);
}
}
private void DetectNavigationChange(InternalEntityEntry entry, INavigation navigation, Sidecar snapshot)
{
var snapshotValue = snapshot[navigation];
var currentValue = entry[navigation];
var stateManager = entry.StateManager;
var added = new HashSet <object>(ReferenceEqualityComparer.Instance);
if (navigation.IsCollection())
{
var snapshotCollection = (IEnumerable)snapshotValue;
var currentCollection = (IEnumerable)currentValue;
var removed = new HashSet <object>(ReferenceEqualityComparer.Instance);
if (snapshotCollection != null)
{
foreach (var entity in snapshotCollection)
{
removed.Add(entity);
}
}
if (currentCollection != null)
{
foreach (var entity in currentCollection)
{
if (!removed.Remove(entity))
{
added.Add(entity);
}
}
}
if (added.Any() ||
removed.Any())
{
stateManager.Notify.NavigationCollectionChanged(entry, navigation, added, removed);
snapshot.TakeSnapshot(navigation);
}
}
else if (!ReferenceEquals(currentValue, snapshotValue))
{
stateManager.Notify.NavigationReferenceChanged(entry, navigation, snapshotValue, currentValue);
if (currentValue != null)
{
added.Add(currentValue);
}
snapshot.TakeSnapshot(navigation);
}
foreach (var addedEntity in added)
{
var addedEntry = stateManager.GetOrCreateEntry(addedEntity);
if (addedEntry.EntityState == EntityState.Detached)
{
_attacher.AttachGraph(addedEntry, EntityState.Added);
}
}
}
private void DetectNavigationChange(InternalEntityEntry entry, INavigation navigation, Sidecar snapshot)
{
var snapshotValue = snapshot[navigation];
var currentValue = entry[navigation];
var stateManager = entry.StateManager;
var added = new HashSet<object>(ReferenceEqualityComparer.Instance);
if (navigation.IsCollection())
{
var snapshotCollection = (IEnumerable)snapshotValue;
var currentCollection = (IEnumerable)currentValue;
var removed = new HashSet<object>(ReferenceEqualityComparer.Instance);
if (snapshotCollection != null)
{
foreach (var entity in snapshotCollection)
{
removed.Add(entity);
}
}
if (currentCollection != null)
{
foreach (var entity in currentCollection)
{
if (!removed.Remove(entity))
{
added.Add(entity);
}
}
}
if (added.Any()
|| removed.Any())
{
stateManager.Notify.NavigationCollectionChanged(entry, navigation, added, removed);
snapshot.TakeSnapshot(navigation);
}
}
else if (!ReferenceEquals(currentValue, snapshotValue))
{
stateManager.Notify.NavigationReferenceChanged(entry, navigation, snapshotValue, currentValue);
if (currentValue != null)
{
added.Add(currentValue);
}
snapshot.TakeSnapshot(navigation);
}
foreach (var addedEntity in added)
{
var addedEntry = stateManager.GetOrCreateEntry(addedEntity);
if (addedEntry.EntityState == EntityState.Detached)
{
_attacher.AttachGraph(addedEntry, EntityState.Added);
}
}
}
private void DetectKeyChange(InternalEntityEntry entry, IProperty property, Sidecar snapshot)
{
if (!snapshot.HasValue(property))
{
return;
}
var keys = property.FindContainingKeys().ToList();
var foreignKeys = property.FindContainingForeignKeys(entry.EntityType).ToList();
if (keys.Count > 0
|| foreignKeys.Count > 0)
{
var snapshotValue = snapshot[property];
var currentValue = entry[property];
// Note that mutation of a byte[] key is not supported or detected, but two different instances
// of byte[] with the same content must be detected as equal.
if (!StructuralComparisons.StructuralEqualityComparer.Equals(currentValue, snapshotValue))
{
var stateManager = entry.StateManager;
if (foreignKeys.Count > 0)
{
stateManager.Notify.ForeignKeyPropertyChanged(entry, property, snapshotValue, currentValue);
foreach (var foreignKey in foreignKeys)
{
stateManager.UpdateDependentMap(entry, snapshot.GetDependentKeyValue(foreignKey), foreignKey);
}
}
if (keys.Count > 0)
{
foreach (var key in keys)
{
stateManager.UpdateIdentityMap(entry, snapshot.GetPrincipalKeyValue(key), key);
}
stateManager.Notify.PrincipalKeyPropertyChanged(entry, property, snapshotValue, currentValue);
}
snapshot.TakeSnapshot(property);
}
}
}
private void DetectKeyChange(InternalEntityEntry entry, IProperty property, Sidecar snapshot)
{
if (!snapshot.HasValue(property))
{
return;
}
// TODO: Perf: make it fast to check if a property is part of any key
var isPrimaryKey = property.IsPrimaryKey();
var isPrincipalKey = _model.GetReferencingForeignKeys(property).Any();
var isForeignKey = property.IsForeignKey();
if (isPrimaryKey
|| isPrincipalKey
|| isForeignKey)
{
var snapshotValue = snapshot[property];
var currentValue = entry[property];
// Note that mutation of a byte[] key is not supported or detected, but two different instances
// of byte[] with the same content must be detected as equal.
if (!StructuralComparisons.StructuralEqualityComparer.Equals(currentValue, snapshotValue))
{
if (isForeignKey)
{
entry.StateManager.Notify.ForeignKeyPropertyChanged(entry, property, snapshotValue, currentValue);
}
if (isPrimaryKey)
{
entry.StateManager.UpdateIdentityMap(entry, snapshot.GetPrimaryKeyValue());
}
if (isPrincipalKey)
{
entry.StateManager.Notify.PrincipalKeyPropertyChanged(entry, property, snapshotValue, currentValue);
}
snapshot.TakeSnapshot(property);
}
}
}