public override string ToString()
{
return(string.Format(
CultureInfo.CurrentCulture,
"'{0}' {1} -> '{2}' {3}",
EntityType.DisplayName(),
Property.Format(Properties),
PrincipalEntityType.DisplayName(),
Property.Format(PrincipalKey.Properties)));
}
protected virtual bool SetDiscriminatorValue([CanBeNull] object value)
{
if (DiscriminatorProperty == null)
{
throw new InvalidOperationException(
RelationalStrings.NoDiscriminatorForValue(EntityType.DisplayName(), EntityType.RootType().DisplayName()));
}
if (value != null && !DiscriminatorProperty.ClrType.GetTypeInfo().IsAssignableFrom(value.GetType().GetTypeInfo()))
{
throw new InvalidOperationException(RelationalStrings.DiscriminitatorValueIncompatible(
value, DiscriminatorProperty.Name, DiscriminatorProperty.ClrType));
}
return(Annotations.SetAnnotation(RelationalAnnotationNames.DiscriminatorValue, value));
}
public override string ToString()
=> $"'{EntityType.DisplayName()}' {Property.Format(Properties)} -> '{PrincipalEntityType.DisplayName()}' {Property.Format(PrincipalKey.Properties)}";
public static bool CanPropertiesBeRequired(
[NotNull] IEnumerable <Property> properties,
bool?required,
[NotNull] EntityType entityType,
bool shouldThrow)
{
Check.NotNull(properties, nameof(properties));
Check.NotNull(entityType, nameof(entityType));
if (!required.HasValue ||
required.Value)
{
return(true);
}
var nullableProperties = properties.Where(p => ((IProperty)p).ClrType.IsNullableType()).ToList();
if (!nullableProperties.Any())
{
if (shouldThrow)
{
throw new InvalidOperationException(CoreStrings.ForeignKeyCannotBeOptional(
Property.Format(properties), entityType.DisplayName()));
}
return(false);
}
return(true);
}