/// <summary>
/// This API supports the Entity Framework Core infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
public virtual WeakReference <object> TryGetEntity(
ValueBuffer valueBuffer,
bool throwOnNullKey,
out bool hasNullKey)
{
var key = PrincipalKeyValueFactory.CreateFromBuffer(valueBuffer);
if (key == null)
{
if (throwOnNullKey)
{
if (Key.IsPrimaryKey())
{
throw new InvalidOperationException(
CoreStrings.InvalidKeyValue(
Key.DeclaringEntityType.DisplayName(),
PrincipalKeyValueFactory.FindNullPropertyInValueBuffer(valueBuffer).Name));
}
throw new InvalidOperationException(
CoreStrings.InvalidAlternateKeyValue(
Key.DeclaringEntityType.DisplayName(),
PrincipalKeyValueFactory.FindNullPropertyInValueBuffer(valueBuffer).Name));
}
hasNullKey = true;
return(null);
}
hasNullKey = false;
return(_identityMap.TryGetValue((TKey)key, out var entity) ? entity : null);
}
/// <summary>
/// This API supports the Entity Framework Core infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
public virtual InternalEntityEntry TryGetEntry(ValueBuffer valueBuffer, bool throwOnNullKey)
{
var key = PrincipalKeyValueFactory.CreateFromBuffer(valueBuffer);
if (key == null &&
throwOnNullKey)
{
throw new InvalidOperationException(CoreStrings.InvalidKeyValue(Key.DeclaringEntityType.DisplayName()));
}
try
{
InternalEntityEntry entry;
return(key != null &&
_identityMap.TryGetValue((TKey)key, out entry)
? entry
: null);
}
catch (InvalidCastException e)
{
throw new InvalidOperationException(
// ReSharper disable once PossibleNullReferenceException
CoreStrings.ErrorMaterializingValueInvalidCast(typeof(TKey), key.GetType()),
e);
}
}
public virtual InternalEntityEntry TryGetEntry(ValueBuffer valueBuffer, bool throwOnNullKey)
{
InternalEntityEntry entry;
var key = PrincipalKeyValueFactory.CreateFromBuffer(valueBuffer);
if (key == null &&
throwOnNullKey)
{
throw new InvalidOperationException(CoreStrings.InvalidKeyValue(Key.DeclaringEntityType.DisplayName()));
}
return(key != null && _identityMap.TryGetValue((TKey)key, out entry) ? entry : null);
}
/// <summary>
/// This API supports the Entity Framework Core infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
public virtual IIncludeKeyComparer CreateIncludeKeyComparer(INavigation navigation, ValueBuffer valueBuffer)
{
if (navigation.IsDependentToPrincipal())
{
return(navigation.ForeignKey.GetDependentKeyValueFactory <TKey>().TryCreateFromBuffer(valueBuffer, out var keyValue)
? (IIncludeKeyComparer) new DependentToPrincipalIncludeComparer <TKey>(keyValue, PrincipalKeyValueFactory)
: new NullIncludeComparer());
}
return(new PrincipalToDependentIncludeComparer <TKey>(
(TKey)PrincipalKeyValueFactory.CreateFromBuffer(valueBuffer),
navigation.ForeignKey.GetDependentKeyValueFactory <TKey>(),
PrincipalKeyValueFactory));
}
public virtual WeakReference <object> TryGetEntity(ValueBuffer valueBuffer, out bool hasNullKey)
{
var key = PrincipalKeyValueFactory.CreateFromBuffer(valueBuffer);
if (key == null)
{
hasNullKey = true;
return(null);
}
hasNullKey = false;
WeakReference <object> entity;
return(_identityMap.TryGetValue((TKey)key, out entity) ? entity : null);
}
/// <summary>
/// This API supports the Entity Framework Core infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
public virtual InternalEntityEntry TryGetEntry(ValueBuffer valueBuffer, bool throwOnNullKey)
{
var key = PrincipalKeyValueFactory.CreateFromBuffer(valueBuffer);
if (key == null &&
throwOnNullKey)
{
if (Key.IsPrimaryKey())
{
throw new InvalidOperationException(
CoreStrings.InvalidKeyValue(
Key.DeclaringEntityType.DisplayName(),
PrincipalKeyValueFactory.FindNullPropertyInValueBuffer(valueBuffer).Name));
}
throw new InvalidOperationException(
CoreStrings.InvalidAlternateKeyValue(
Key.DeclaringEntityType.DisplayName(),
PrincipalKeyValueFactory.FindNullPropertyInValueBuffer(valueBuffer).Name));
}
try
{
return(key != null &&
_identityMap.TryGetValue((TKey)key, out var entry)
? entry
: null);
}
catch (InvalidCastException e)
{
throw new InvalidOperationException(
// ReSharper disable once PossibleNullReferenceException
CoreStrings.ErrorMaterializingPropertyInvalidCast(
Key.DeclaringEntityType.DisplayName(),
Key.Properties.First().Name,
typeof(TKey),
key.GetType()),
e);
}
}
/// <summary>
/// This API supports the Entity Framework Core infrastructure and is not intended to be used
/// directly from your code. This API may change or be removed in future releases.
/// </summary>
public virtual bool Contains(ValueBuffer valueBuffer)
{
var key = PrincipalKeyValueFactory.CreateFromBuffer(valueBuffer);
return(key != null && _identityMap.ContainsKey((TKey)key));
}
public virtual void Add(ValueBuffer valueBuffer, object entity) => _identityMap[(TKey)PrincipalKeyValueFactory.CreateFromBuffer(valueBuffer)] = new WeakReference <object>(entity);