public UInt128 Visit(CosmosGuid cosmosGuid, UInt128 seed)
{
UInt128 hash = MurmurHash3.Hash128(CosmosElementHasher.GuidHashSeed, seed);
hash = MurmurHash3.Hash128(cosmosGuid.Value.ToByteArray(), seed);
return(hash);
}
private object CosmosElementToPartitionKeyObject(CosmosElement cosmosElement)
{
// TODO: Leverage original serialization and avoid re-serialization (bug)
switch (cosmosElement.Type)
{
case CosmosElementType.String:
CosmosString cosmosString = cosmosElement as CosmosString;
return(cosmosString.Value);
case CosmosElementType.Number:
CosmosNumber cosmosNumber = cosmosElement as CosmosNumber;
return(cosmosNumber.AsFloatingPoint());
case CosmosElementType.Boolean:
CosmosBoolean cosmosBool = cosmosElement as CosmosBoolean;
return(cosmosBool.Value);
case CosmosElementType.Guid:
CosmosGuid cosmosGuid = cosmosElement as CosmosGuid;
return(cosmosGuid.Value);
default:
throw new ArgumentException(
string.Format(CultureInfo.InvariantCulture, RMResources.UnsupportedPartitionKeyComponentValue, cosmosElement));
}
}
public UInt128 Visit(CosmosGuid cosmosGuid, UInt128 seed)
{
UInt128 hash = seed == RootHashSeed ? RootCache.Guid : MurmurHash3.Hash128(HashSeeds.Guid, seed);
hash = MurmurHash3.Hash128(cosmosGuid.Value.ToByteArray(), hash);
return(hash);
}
public void TestGuid()
{
Guid value = Guid.NewGuid();
ReadOnlyMemory <byte> result = JsonSerializer.Serialize(value);
CosmosGuid cosmosGuid = (CosmosGuid)CosmosElement.CreateFromBuffer(result);
Assert.AreEqual(expected: value, actual: cosmosGuid.Value);
}
public TryCatch <object> Visit(CosmosGuid cosmosGuid, Type type)
{
if (type != typeof(Guid))
{
return(TryCatch <object> .FromException(Visitor.Exceptions.ExpectedGuid));
}
return(TryCatch <object> .FromResult((object)cosmosGuid.Value));
}
public TryCatch <object> Visit(CosmosArray cosmosArray, Type type)
{
bool isReadOnlyList = type.IsGenericType && (type.GetGenericTypeDefinition() == typeof(IReadOnlyList <>));
if (!isReadOnlyList)
{
return(TryCatch <object> .FromException(Visitor.Exceptions.ExpectedArray));
}
Type genericArgumentType = type.GenericTypeArguments.First();
Type listType = typeof(List <>).MakeGenericType(genericArgumentType);
IList list = (IList)Activator.CreateInstance(listType);
foreach (CosmosElement arrayItem in cosmosArray)
{
TryCatch <object> tryGetMaterializedArrayItem;
if (genericArgumentType == typeof(object))
{
Type dotNetType = arrayItem switch
{
CosmosArray _ => typeof(IReadOnlyList <object>),
CosmosBoolean _ => typeof(bool),
CosmosNull _ => typeof(object),
CosmosNumber _ => typeof(Number64),
CosmosObject _ => typeof(object),
CosmosString _ => typeof(string),
CosmosGuid _ => typeof(Guid),
CosmosBinary _ => typeof(ReadOnlyMemory <byte>),
_ => throw new ArgumentOutOfRangeException($"Unknown cosmos element type."),
};
tryGetMaterializedArrayItem = arrayItem.Accept(this, dotNetType);
}
else
{
tryGetMaterializedArrayItem = arrayItem.Accept(this, genericArgumentType);
}
if (tryGetMaterializedArrayItem.Failed)
{
return(tryGetMaterializedArrayItem);
}
list.Add(tryGetMaterializedArrayItem.Result);
}
return(TryCatch <object> .FromResult(list));
}
private static IReadOnlyList <(string serializedToken, CosmosElement element)> TokenTestData()
{
Guid guid = Guid.Parse("69D5AB17-C94A-4173-A278-B59D0D9C7C37");
byte[] randomBytes = guid.ToByteArray();
string hexString = PartitionKeyInternal.HexConvert.ToHex(randomBytes, 0, randomBytes.Length);
return(new List <(string, CosmosElement)>
{
("[42, 37]", CosmosArray.Parse("[42, 37]")),
($@"{{C_Binary(""0x{hexString}"")}}", CosmosBinary.Create(new ReadOnlyMemory <byte>(randomBytes))),
("false", CosmosBoolean.Create(false)),
($@"{{C_Guid(""{guid}"")}}", CosmosGuid.Create(guid)),
("null", CosmosNull.Create()),
("1", CosmosInt64.Create(1)),
("{\"foo\": false}", CosmosObject.Parse("{\"foo\": false}")),
("asdf", CosmosString.Create("asdf"))
});
public bool Visit(CosmosGuid cosmosGuid) => false;
/// <summary>
/// Compares to objects and returns their partial sort relationship.
/// </summary>
/// <param name="element1">The first element to compare.</param>
/// <param name="element2">The second element to compare.</param>
/// <returns>
/// Less than zero if obj1 comes before obj2 in the sort order.
/// Zero if obj1 and obj2 are interchangeable in the sort order.
/// Greater than zero if obj2 comes before obj1 in the sort order.
/// </returns>
public int Compare(CosmosElement element1, CosmosElement element2)
{
if (object.ReferenceEquals(element1, element2))
{
return(0);
}
if (object.ReferenceEquals(element1, MinValueItem.Singleton))
{
return(-1);
}
if (object.ReferenceEquals(element2, MinValueItem.Singleton))
{
return(1);
}
if (object.ReferenceEquals(element1, MaxValueItem.Singleton))
{
return(1);
}
if (object.ReferenceEquals(element2, MaxValueItem.Singleton))
{
return(-1);
}
if (element1 == Undefined)
{
return(-1);
}
if (element2 == Undefined)
{
return(1);
}
CosmosElementType type1 = element1.Type;
int cmp = CompareTypes(element1, element2);
if (cmp == 0)
{
// If they are the same type then you need to break the tie.
switch (type1)
{
case CosmosElementType.Boolean:
cmp = Comparer <bool> .Default.Compare(
(element1 as CosmosBoolean).Value,
(element2 as CosmosBoolean).Value);
break;
case CosmosElementType.Null:
// All nulls are the same.
cmp = 0;
break;
case CosmosElementType.Number:
CosmosNumber number1 = element1 as CosmosNumber;
CosmosNumber number2 = element2 as CosmosNumber;
if (number1.NumberType == CosmosNumberType.Number64)
{
double double1;
if (number1.IsFloatingPoint)
{
double1 = number1.AsFloatingPoint().Value;
}
else
{
double1 = number1.AsInteger().Value;
}
double double2;
if (number2.IsFloatingPoint)
{
double2 = number2.AsFloatingPoint().Value;
}
else
{
double2 = number2.AsInteger().Value;
}
cmp = Comparer <double> .Default.Compare(
double1,
double2);
}
else if (number1.IsFloatingPoint)
{
double double1 = number1.AsFloatingPoint().Value;
double double2 = number2.AsFloatingPoint().Value;
cmp = Comparer <double> .Default.Compare(double1, double2);
}
else
{
long integer1 = number1.AsInteger().Value;
long integer2 = number2.AsInteger().Value;
cmp = Comparer <long> .Default.Compare(integer1, integer2);
}
break;
case CosmosElementType.String:
CosmosString string1 = element1 as CosmosString;
CosmosString string2 = element2 as CosmosString;
cmp = string.CompareOrdinal(
string1.Value,
string2.Value);
break;
case CosmosElementType.Guid:
CosmosGuid guid1 = element1 as CosmosGuid;
CosmosGuid guid2 = element2 as CosmosGuid;
cmp = guid1.Value.CompareTo(guid2.Value);
break;
case CosmosElementType.Binary:
CosmosBinary binary1 = element1 as CosmosBinary;
CosmosBinary binary2 = element2 as CosmosBinary;
cmp = ItemComparer.CompareTo(binary1, binary2);
break;
default:
throw new ArgumentException($"Unknown: {nameof(CosmosElementType)}: {type1}");
}
}
return(cmp);
}
public JsonType Visit(CosmosGuid cosmosGuid) => throw new NotSupportedException("Guid is not a json type.");
public CosmosElement Visit(CosmosGuid cosmosGuid, CosmosElement indexer) => Undefined;
public int Visit(CosmosGuid cosmosGuid, CosmosElement input)
{
return(cosmosGuid.CompareTo((CosmosGuid)input));
}
public int Visit(CosmosGuid cosmosGuid, CosmosElement input) => cosmosGuid.CompareTo((CosmosGuid)input);
public int Visit(CosmosGuid cosmosGuid)
{
return(6);
}
public int Visit(CosmosGuid cosmosGuid) => 6;
public bool Visit(CosmosGuid cosmosGuid)
{
return(true);
}
public void TestOrderByQueryLiterals()
{
StringBuilder sb = new StringBuilder();
CosmosElement element = CosmosObject.Create(
new Dictionary <string, CosmosElement>()
{
{ "item", CosmosString.Create("asdf") }
});
element.Accept(new CosmosElementToQueryLiteral(sb));
Assert.AreEqual(
@"{""item"":""asdf""}",
sb.ToString());
element = CosmosObject.Create(
new Dictionary <string, CosmosElement>()
{
{ "item", CosmosBoolean.Create(true) }
});
sb.Clear();
element.Accept(new CosmosElementToQueryLiteral(sb));
Assert.AreEqual(
@"{""item"":true}",
sb.ToString());
element = CosmosObject.Create(
new Dictionary <string, CosmosElement>()
{
{ "item", CosmosBoolean.Create(false) }
});
sb.Clear();
element.Accept(new CosmosElementToQueryLiteral(sb));
Assert.AreEqual(
@"{""item"":false}",
sb.ToString());
element = CosmosObject.Create(
new Dictionary <string, CosmosElement>()
{
{ "item", CosmosNull.Create() }
});
sb.Clear();
element.Accept(new CosmosElementToQueryLiteral(sb));
Assert.AreEqual(
@"{""item"":null}",
sb.ToString());
element = CosmosObject.Create(
new Dictionary <string, CosmosElement>()
{
{ "item", CosmosNumber64.Create(1.0) }
});
sb.Clear();
element.Accept(new CosmosElementToQueryLiteral(sb));
Assert.AreEqual(
@"{""item"":1}",
sb.ToString());
element = CosmosObject.Create(
new Dictionary <string, CosmosElement>()
{
{ "item", CosmosNumber64.Create(1L) }
});
sb.Clear();
element.Accept(new CosmosElementToQueryLiteral(sb));
Assert.AreEqual(
@"{""item"":1}",
sb.ToString());
element = CosmosObject.Create(
new Dictionary <string, CosmosElement>()
{
{ "item", CosmosInt8.Create(3) },
{ "item2", CosmosInt16.Create(4) },
{ "item3", CosmosInt32.Create(5) },
{ "item5", CosmosUInt32.Create(7) },
{ "item6", CosmosInt64.Create(8) },
{ "item7", CosmosFloat32.Create(9.1f) },
{ "item8", CosmosFloat64.Create(10.2) },
});
sb.Clear();
element.Accept(new CosmosElementToQueryLiteral(sb));
Assert.AreEqual(
@"{""item"":C_Int8(3),""item2"":C_Int16(4),""item3"":C_Int32(5),""item5"":C_UInt32(7),""item6"":C_Int64(8)," +
@"""item7"":C_Float32(9.1),""item8"":C_Float64(10.2)}",
sb.ToString());
Guid guid = Guid.NewGuid();
byte[] randomBytes = Guid.NewGuid().ToByteArray();
string hexString = PartitionKeyInternal.HexConvert.ToHex(randomBytes, 0, randomBytes.Length);
element = CosmosObject.Create(
new Dictionary <string, CosmosElement>()
{
{ "item", CosmosGuid.Create(guid) },
{ "item2", CosmosBinary.Create(new ReadOnlyMemory <byte>(randomBytes)) },
});
sb.Clear();
element.Accept(new CosmosElementToQueryLiteral(sb));
Assert.AreEqual(
$@"{{""item"":C_Guid(""{guid.ToString()}""),""item2"":C_Binary(""0x{hexString}"")}}",
sb.ToString());
// deeply nested arrays and objects
element = CosmosObject.Create(
new Dictionary <string, CosmosElement>()
{
{ "item", CosmosGuid.Create(guid) },
// empty array
{ "item2", CosmosArray.Create(new CosmosElement[] { }) },
// empty object
{ "item3", CosmosObject.Create(new Dictionary <string, CosmosElement>()) },
// array of objects with numbers
{ "item4", CosmosArray.Create(new CosmosElement[]
{
CosmosObject.Create(new Dictionary <string, CosmosElement>()
{
{ "a", CosmosInt8.Create(3) },
{ "b", CosmosString.Create("adf") },
}),
CosmosInt16.Create(25)
}) },
});
sb.Clear();
element.Accept(new CosmosElementToQueryLiteral(sb));
Assert.AreEqual(
$@"{{""item"":C_Guid(""{guid.ToString()}""),""item2"":[],""item3"":{{}},""item4"":[{{""a"":C_Int8(3),""b"":""adf""}},C_Int16(25)]}}",
sb.ToString());
}
/// <summary>
/// Compares to objects and returns their partial sort relationship.
/// </summary>
/// <param name="element1">The first element to compare.</param>
/// <param name="element2">The second element to compare.</param>
/// <returns>
/// Less than zero if obj1 comes before obj2 in the sort order.
/// Zero if obj1 and obj2 are interchangeable in the sort order.
/// Greater than zero if obj2 comes before obj1 in the sort order.
/// </returns>
public int Compare(CosmosElement element1, CosmosElement element2)
{
if (object.ReferenceEquals(element1, element2))
{
return(0);
}
if (object.ReferenceEquals(element1, MinValueItem.Singleton))
{
return(-1);
}
if (object.ReferenceEquals(element2, MinValueItem.Singleton))
{
return(1);
}
if (object.ReferenceEquals(element1, MaxValueItem.Singleton))
{
return(1);
}
if (object.ReferenceEquals(element2, MaxValueItem.Singleton))
{
return(-1);
}
if (element1 == Undefined)
{
return(-1);
}
if (element2 == Undefined)
{
return(1);
}
CosmosElementType type1 = element1.Type;
int cmp = CompareTypes(element1, element2);
if (cmp == 0)
{
// If they are the same type then you need to break the tie.
switch (type1)
{
case CosmosElementType.Boolean:
cmp = Comparer <bool> .Default.Compare(
(element1 as CosmosBoolean).Value,
(element2 as CosmosBoolean).Value);
break;
case CosmosElementType.Null:
// All nulls are the same.
cmp = 0;
break;
case CosmosElementType.Number:
CosmosNumber number1 = element1 as CosmosNumber;
CosmosNumber number2 = element2 as CosmosNumber;
if (number1.NumberType == CosmosNumberType.Number64)
{
// Both are Number64, so compare as Number64
cmp = number1.Value.CompareTo(number2.Value);
}
else
{
// We have a number with precision
if (number2.Value.IsInteger)
{
// compare as longs, since all types have an implicit conversion with full fidelity.
long integer1 = Number64.ToLong(number1.Value);
long integer2 = Number64.ToLong(number2.Value);
cmp = Comparer <long> .Default.Compare(integer1, integer2);
}
else
{
// compare as doubles, since all types have an implicit conversion with full fidelity.
double double1 = Number64.ToDouble(number1.Value);
double double2 = Number64.ToDouble(number2.Value);
cmp = Comparer <double> .Default.Compare(double1, double2);
}
}
break;
case CosmosElementType.String:
CosmosString string1 = element1 as CosmosString;
CosmosString string2 = element2 as CosmosString;
cmp = string.CompareOrdinal(
string1.Value,
string2.Value);
break;
case CosmosElementType.Guid:
CosmosGuid guid1 = element1 as CosmosGuid;
CosmosGuid guid2 = element2 as CosmosGuid;
cmp = guid1.Value.CompareTo(guid2.Value);
break;
case CosmosElementType.Binary:
CosmosBinary binary1 = element1 as CosmosBinary;
CosmosBinary binary2 = element2 as CosmosBinary;
cmp = ItemComparer.CompareTo(binary1, binary2);
break;
case CosmosElementType.Array:
case CosmosElementType.Object:
{
UInt128 hash1 = DistinctHash.GetHash(element1);
UInt128 hash2 = DistinctHash.GetHash(element2);
return(hash1.CompareTo(hash2));
}
default:
throw new ArgumentException($"Unknown: {nameof(CosmosElementType)}: {type1}");
}
}
return(cmp);
}
public void Visit(CosmosGuid cosmosGuid)
{
this.stringBuilder.AppendFormat("C_Guid(\"{0}\")", cosmosGuid.Value);
}
