public static TResult BindSingleValueToArray <TResult>(this EntityProperty value, Type arrayType,
Func <object, TResult> onBound,
Func <TResult> onFailedToBind)
{
#region Refs
object ComposeFromBase <TBase>(Type composedType, Type genericCompositionType,
Func <Type, TBase, object> instantiate)
{
return(value.BindSingleValueToArray(typeof(TBase),
objects =>
{
var guids = (TBase[])objects;
var resourceType = arrayType.GenericTypeArguments.First();
var instantiatableType = genericCompositionType.MakeGenericType(resourceType);
var refs = guids
.Select(
guidValue =>
{
var instance = instantiate(instantiatableType, guidValue);
// Activator.CreateInstance(instantiatableType, new object[] { guidValue });
return instance;
})
.ToArray();
var typedRefs = refs.CastArray(arrayType);
return typedRefs;
},
() => throw new Exception("BindArray failed to bind to Guids?")));
}
if (arrayType.IsSubClassOfGeneric(typeof(IRef <>)))
{
var values = ComposeFromBase <Guid>(typeof(IRef <>), typeof(EastFive.Ref <>),
(instantiatableType, guidValue) => Activator.CreateInstance(instantiatableType, new object[] { guidValue }));
return(onBound(values));
}
object ComposeOptionalFromBase <TBase>(Type composedType, Type genericCompositionType, Type optionalBaseType)
{
var values = ComposeFromBase <Guid?>(composedType, genericCompositionType,
(instantiatableType, guidValueMaybe) =>
{
if (!guidValueMaybe.HasValue)
{
return(Activator.CreateInstance(instantiatableType, new object[] { }));
}
var guidValue = guidValueMaybe.Value;
var resourceType = arrayType.GenericTypeArguments.First();
var instantiatableRefType = optionalBaseType.MakeGenericType(resourceType);
var refValue = Activator.CreateInstance(instantiatableRefType, new object[] { guidValue });
var result = Activator.CreateInstance(instantiatableType, new object[] { refValue });
return(result);
});
return(values);
}
if (arrayType.IsSubClassOfGeneric(typeof(IRefOptional <>)))
{
var values = ComposeOptionalFromBase <Guid?>(typeof(IRefOptional <>),
typeof(EastFive.RefOptional <>), typeof(EastFive.Ref <>));
return(onBound(values));
}
#endregion
if (arrayType.IsArray)
{
var arrayElementType = arrayType.GetElementType();
var values = value.BinaryValue
.FromByteArray()
.Select(
bytes =>
{
var ep = new EntityProperty(bytes);
var arrayValues = ep.BindSingleValueToArray <object>(arrayElementType,
v => v,
() => Array.CreateInstance(arrayElementType, 0));
// var arrayValues = bytes.FromEdmTypedByteArray(arrayElementType);
return(arrayValues);
})
.ToArray();
//var values = value.BinaryValue.FromEdmTypedByteArray(arrayElementType);
return(onBound(values));
}
return(arrayType.IsNullable(
nulledType =>
{
if (typeof(Guid) == nulledType)
{
var values = value.BinaryValue.ToNullablesFromByteArray <Guid>(
(byteArray) =>
{
if (byteArray.Length == 16)
{
return new Guid(byteArray);
}
return default(Guid);
});
return onBound(values);
}
if (typeof(decimal) == nulledType)
{
var values = value.BinaryValue.ToNullablesFromByteArray <decimal>(
byteArray =>
{
if (byteArray.TryConvertToDecimal(out decimal decimalValue))
{
return decimalValue;
}
return default(decimal);
});
return onBound(values);
}
if (typeof(DateTime) == nulledType)
{
var values = value.BinaryValue.ToNullableDateTimesFromByteArray();
return onBound(values);
}
var arrayOfObj = value.BinaryValue.FromEdmTypedByteArray(arrayType);
var arrayOfType = arrayOfObj.CastArray(arrayType);
return onBound(arrayOfType);
throw new Exception($"Cannot serialize a nullable array of `{nulledType.FullName}`.");
},
() =>
{
if (typeof(Guid) == arrayType)
{
var values = value.BinaryValue.ToGuidsFromByteArray();
return onBound(values);
}
if (typeof(byte) == arrayType)
{
return onBound(value.BinaryValue);
}
if (typeof(bool) == arrayType)
{
var boolArray = value.BinaryValue
.Select(b => b != 0)
.ToArray();
return onBound(boolArray);
}
if (typeof(DateTime) == arrayType)
{
var values = value.BinaryValue.ToDateTimesFromByteArray();
return onBound(values);
}
if (typeof(double) == arrayType)
{
var values = value.BinaryValue.ToDoublesFromByteArray();
return onBound(values);
}
if (typeof(decimal) == arrayType)
{
var values = value.BinaryValue.ToDecimalsFromByteArray();
return onBound(values);
}
if (typeof(int) == arrayType)
{
var values = value.BinaryValue.ToIntsFromByteArray();
return onBound(values);
}
if (typeof(long) == arrayType)
{
var values = value.BinaryValue.ToLongsFromByteArray();
return onBound(values);
}
if (typeof(string) == arrayType)
{
var values = value.BinaryValue.ToStringNullOrEmptysFromUTF8ByteArray();
return onBound(values);
}
if (arrayType.IsEnum)
{
var values = value.BinaryValue.ToEnumsFromByteArray(arrayType);
return onBound(values);
}
if (typeof(object) == arrayType)
{
var values = value.BinaryValue.FromEdmTypedByteArray(arrayType);
return onBound(values);
}
return arrayType
.GetAttributesInterface <IBind <EntityProperty> >(true)
.First <IBind <EntityProperty>, TResult>(
(epSerializer, next) =>
{
var values = value.BinaryValue.FromEdmTypedByteArray(typeof(byte[]));
var boundValues = values
.Where(valueObject => valueObject is byte[])
.Select(
valueObject =>
{
var valueBytes = valueObject as byte[];
var valueEp = new EntityProperty(valueBytes);
return epSerializer.Bind(valueEp, arrayType,
v => v,
() => arrayType.GetDefault());
})
.CastArray(arrayType);
return onBound(boundValues);
},
() =>
{
throw new Exception($"Cannot serialize array of `{arrayType.FullName}`.");
});
}));
}
public static TResult Bind <TResult>(this EntityProperty value, Type type,
Func <object, TResult> onBound,
Func <TResult> onFailedToBind)
{
if (type.IsArray)
{
var arrayType = type.GetElementType();
return(value.BindSingleValueToArray(arrayType,
onBound,
onFailedToBind));
}
#region Basic values
if (typeof(Guid) == type)
{
if (value.PropertyType == EdmType.Guid)
{
var guidValue = value.GuidValue;
return(onBound(guidValue));
}
return(onBound(default(Guid))); // This seems to be the best move in case of data migration
// return onFailedToBind();
}
// TODO: Type check the rest of these like GUID
if (typeof(long) == type)
{
var longValue = value.Int64Value;
return(onBound(longValue));
}
if (typeof(int) == type)
{
var intValue = value.Int32Value;
return(onBound(intValue));
}
if (typeof(float) == type)
{
var floatValue = (float)value.DoubleValue;
return(onBound(floatValue));
}
if (typeof(double) == type)
{
var floatValue = value.DoubleValue;
return(onBound(floatValue));
}
if (typeof(string) == type)
{
if (value.PropertyType != EdmType.String)
{
return(onBound(default(string)));
}
var stringValue = value.StringValue;
return(onBound(stringValue));
}
if (typeof(DateTime) == type)
{
var dtValue = value.DateTime;
return(onBound(dtValue));
}
if (typeof(TimeZoneInfo) == type)
{
if (value.PropertyType != EdmType.String)
{
return(onFailedToBind());
}
var stringValue = value.StringValue;
try
{
var tzi = TimeZoneInfo.FindSystemTimeZoneById(stringValue);
return(onBound(tzi));
}
catch (Exception)
{
return(onFailedToBind());
}
}
if (typeof(Uri) == type)
{
var strValue = value.StringValue;
if (Uri.TryCreate(strValue, UriKind.RelativeOrAbsolute, out Uri uriValue))
{
return(onBound(uriValue));
}
return(onBound(uriValue));
}
if (typeof(Type) == type)
{
var typeValueString = value.StringValue;
var typeValue = Type.GetType(typeValueString);
return(onBound(typeValue));
}
if (type.IsEnum)
{
var enumNameString = value.StringValue;
var enumValue = Enum.Parse(type, enumNameString);
return(onBound(enumValue));
}
if (typeof(bool) == type)
{
var boolValue = value.BooleanValue;
return(onBound(boolValue));
}
#region refs
object IRefInstance(Guid guidValue)
{
var resourceType = type.GenericTypeArguments.First();
return(EntityPropertyExtensions.IRefInstance(guidValue, resourceType));
}
if (type.IsSubClassOfGeneric(typeof(IRef <>)))
{
var guidValue = value.GuidValue.Value;
var instance = IRefInstance(guidValue);
return(onBound(instance));
}
if (type.IsSubClassOfGeneric(typeof(IRefOptional <>)))
{
Guid?GetIdMaybe()
{
if (value.PropertyType == EdmType.String)
{
if (Guid.TryParse(value.StringValue, out Guid id))
{
return(id);
}
return(default(Guid?));
}
if (value.PropertyType == EdmType.Binary)
{
return(default(Guid?));
}
return(value.GuidValue);
}
var guidValueMaybe = GetIdMaybe();
var resourceType = type.GenericTypeArguments.First();
var instantiatableType = typeof(EastFive.RefOptional <>)
.MakeGenericType(resourceType);
if (!guidValueMaybe.HasValue)
{
var refOpt = Activator.CreateInstance(instantiatableType, new object[] { });
return(onBound(refOpt));
}
var guidValue = guidValueMaybe.Value;
var refValue = IRefInstance(guidValue);
var instance = Activator.CreateInstance(instantiatableType, new object[] { refValue });
return(onBound(instance));
}
if (type.IsSubClassOfGeneric(typeof(IRefs <>)))
{
var guidValues = value.BinaryValue.ToGuidsFromByteArray();
var resourceType = type.GenericTypeArguments.First();
var instantiatableType = typeof(EastFive.Refs <>).MakeGenericType(resourceType);
var instance = Activator.CreateInstance(instantiatableType, new object[] { guidValues });
return(onBound(instance));
}
#endregion
if (typeof(object) == type)
{
switch (value.PropertyType)
{
case EdmType.Binary:
return(onBound(value.BinaryValue));
case EdmType.Boolean:
if (value.BooleanValue.HasValue)
{
return(onBound(value.BooleanValue.Value));
}
break;
case EdmType.DateTime:
if (value.DateTime.HasValue)
{
return(onBound(value.DateTime.Value));
}
break;
case EdmType.Double:
if (value.DoubleValue.HasValue)
{
return(onBound(value.DoubleValue.Value));
}
break;
case EdmType.Guid:
if (value.GuidValue.HasValue)
{
var nullGuidKey = new Guid(EDMExtensions.NullGuidKey);
if (value.GuidValue.Value == nullGuidKey)
{
return(onBound(null));
}
return(onBound(value.GuidValue.Value));
}
break;
case EdmType.Int32:
if (value.Int32Value.HasValue)
{
return(onBound(value.Int32Value.Value));
}
break;
case EdmType.Int64:
if (value.Int64Value.HasValue)
{
return(onBound(value.Int64Value.Value));
}
break;
case EdmType.String:
return(onBound(value.StringValue));
}
return(onBound(value.PropertyAsObject));
}
#endregion
return(type.IsNullable(
nullableType =>
{
if (typeof(Guid) == nullableType)
{
var guidValue = value.GuidValue;
return onBound(guidValue);
}
if (typeof(long) == nullableType)
{
var longValue = value.Int64Value;
return onBound(longValue);
}
if (typeof(int) == nullableType)
{
var intValue = value.Int32Value;
return onBound(intValue);
}
if (typeof(bool) == nullableType)
{
var boolValue = value.BooleanValue;
return onBound(boolValue);
}
if (typeof(float) == nullableType)
{
var floatValue = value.DoubleValue.HasValue ?
(float)value.DoubleValue.Value
:
default(float?);
return onBound(floatValue);
}
if (typeof(double) == nullableType)
{
var floatValue = value.DoubleValue;
return onBound(floatValue);
}
if (typeof(decimal) == nullableType)
{
var doubleValueMaybe = value.DoubleValue;
var decimalMaybeValue = doubleValueMaybe.HasValue ?
(decimal)doubleValueMaybe.Value
:
default(decimal?);
return onBound(decimalMaybeValue);
}
if (typeof(DateTime) == nullableType)
{
var dateTimeValueMaybe = value.DateTime;
return onBound(dateTimeValueMaybe);
}
return onFailedToBind();
},
() => onFailedToBind()));
}
