private byte[] ParseFixed(TypeSchema schema, string jsonObject)
{
var fixedSchema = (FixedSchema)schema;
var result = ConvertToBytes(jsonObject);
if (result.Length != fixedSchema.Size)
{
throw new SerializationException(
string.Format(CultureInfo.InvariantCulture, "'{0}' size does not match the size of fixed schema node.", jsonObject));
}
return(result);
}
/// <summary>
/// Initializes a new instance of the <see cref="ArraySchema" /> class.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="runtimeType">Type of the runtime.</param>
/// <param name="attributes">The attributes.</param>
internal ArraySchema(
TypeSchema item,
Type runtimeType,
Dictionary <string, string> attributes)
: base(runtimeType, attributes)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
this.itemSchema = item;
}
private void AddRecordFields(
IEnumerable <MemberSerializationInfo> members,
Dictionary <string, NamedSchema> schemas,
uint currentDepth,
RecordSchema record)
{
int index = 0;
foreach (MemberSerializationInfo info in members)
{
var property = info.MemberInfo as PropertyInfo;
var field = info.MemberInfo as FieldInfo;
Type memberType;
if (property != null)
{
memberType = property.PropertyType;
}
else if (field != null)
{
memberType = field.FieldType;
}
else
{
throw new SerializationException(
string.Format(
CultureInfo.InvariantCulture,
"Type member '{0}' is not supported.",
info.MemberInfo.GetType().Name));
}
TypeSchema fieldSchema = this.TryBuildUnionSchema(memberType, info.MemberInfo, schemas, currentDepth)
?? this.TryBuildFixedSchema(memberType, info.MemberInfo, record)
?? this.CreateSchema(info.Nullable, memberType, schemas, currentDepth + 1, info.DefaultValue?.GetType());
var aliases = info
.Aliases
.ToList();
var recordField = new RecordField(
new NamedEntityAttributes(new SchemaName(info.Name), aliases, info.Doc),
fieldSchema,
SortOrder.Ascending,
info.HasDefaultValue,
info.DefaultValue,
info.MemberInfo,
index++);
record.AddField(recordField);
}
}
/// <summary>
/// Parses a JSON string according to given schema and returns the corresponding object.
/// </summary>
/// <param name="schema">The schema.</param>
/// <param name="json">The JSON object.</param>
/// <returns>The object.</returns>
internal object Parse(TypeSchema schema, string json)
{
if (this.parsersWithoutSchema.ContainsKey(schema.GetType()))
{
return(this.parsersWithoutSchema[schema.GetType()](json));
}
if (this.parsersWithSchema.ContainsKey(schema.GetType()))
{
return(this.parsersWithSchema[schema.GetType()](schema, json));
}
throw new SerializationException(
string.Format(CultureInfo.InvariantCulture, "Unknown schema type '{0}'.", schema.GetType()));
}
private AvroEnum ParseEnum(TypeSchema schema, string jsonObject)
{
var enumSchema = (EnumSchema)schema;
if (!enumSchema.Symbols.Contains(jsonObject))
{
throw new SerializationException(
string.Format(CultureInfo.InvariantCulture, "'{0}' is not a valid enum value.", jsonObject));
}
return(new AvroEnum(schema)
{
Value = jsonObject
});
}
/// <summary>
/// Creates the avro schema for the specified type.
/// </summary>
/// <param name="type">The type.</param>
/// <param name="schemas">The schemas seen so far.</param>
/// <param name="currentDepth">The current depth.</param>
/// <returns>
/// New instance of schema.
/// </returns>
/// <exception cref="System.Runtime.Serialization.SerializationException">Thrown when maximum depth of object graph is reached.</exception>
private TypeSchema CreateNotNullableSchema(Type type, Dictionary <string, NamedSchema> schemas, uint currentDepth)
{
TypeSchema schema = TryBuildPrimitiveTypeSchema(type);
if (schema != null)
{
return(schema);
}
if ((type.IsInterface() || type.IsAbstract()) ||
this.HasApplicableKnownType(type))
{
return(this.BuildKnownTypeSchema(type, schemas, currentDepth));
}
return(this.BuildComplexTypeSchema(type, schemas, currentDepth));
}
/// <summary>
/// Initializes a new instance of the <see cref="MapSchema" /> class.
/// </summary>
/// <param name="keySchema">The key schema.</param>
/// <param name="valueSchema">The value schema.</param>
/// <param name="runtimeType">Type of the runtime.</param>
/// <param name="attributes">The attributes.</param>
internal MapSchema(
TypeSchema keySchema,
TypeSchema valueSchema,
Type runtimeType,
Dictionary <string, string> attributes)
: base(runtimeType, attributes)
{
if (keySchema == null)
{
throw new ArgumentNullException("keySchema");
}
if (valueSchema == null)
{
throw new ArgumentNullException("valueSchema");
}
this.valueSchema = valueSchema;
this.keySchema = keySchema;
}
private AvroRecord ParseRecord(TypeSchema schema, string jsonObject)
{
var recordSchema = (RecordSchema)schema;
var result = new AvroRecord(recordSchema);
var data = JsonConvert.DeserializeObject <Dictionary <string, JToken> >(jsonObject);
foreach (var datum in data)
{
var matchedRecord = recordSchema.Fields.FirstOrDefault(field => field.Name == datum.Key);
if (matchedRecord == null)
{
throw new SerializationException(
string.Format(CultureInfo.InvariantCulture,
"Could not set default value because JSON object contains fields that do not exist in the schema."));
}
result[matchedRecord.Name] = this.Parse(matchedRecord.TypeSchema, datum.Value.ToString());
}
return(result);
}
/// <summary>
/// Parses the record field.
/// </summary>
/// <param name="field">The field.</param>
/// <param name="parent">The parent schema.</param>
/// <param name="namedSchemas">The named schemas.</param>
/// <param name="position">The position.</param>
/// <returns>
/// Schema internal representation.
/// </returns>
/// <exception cref="System.Runtime.Serialization.SerializationException">Thrown when <paramref name="field"/> is not valid or when sort order is not valid.</exception>
private RecordField ParseRecordField(JObject field, NamedSchema parent, Dictionary <string, NamedSchema> namedSchemas, int position)
{
var name = field.RequiredProperty <string>(Token.Name);
var doc = field.OptionalProperty <string>(Token.Doc);
var order = field.OptionalProperty <string>(Token.Order);
var aliases = this.GetAliases(field, parent.FullName);
var fieldType = field[Token.Type];
if (fieldType == null)
{
throw new SerializationException(
string.Format(CultureInfo.InvariantCulture, "Record field schema '{0}' has no type.", field));
}
TypeSchema type = this.Parse(fieldType, parent, namedSchemas);
object defaultValue = null;
bool hasDefaultValue = field[Token.Default] != null;
if (hasDefaultValue)
{
var objectParser = new JsonObjectParser();
defaultValue = objectParser.Parse(type, field[Token.Default].ToString());
}
var orderValue = SortOrder.Ascending;
if (!string.IsNullOrEmpty(order))
{
if (!SortValue.ContainsKey(order.ToUpperInvariant()))
{
throw new SerializationException(
string.Format(CultureInfo.InvariantCulture, "Invalid sort order of the field '{0}'.", order));
}
orderValue = SortValue[order.ToUpperInvariant()];
}
var fieldName = new SchemaName(name);
var attributes = new NamedEntityAttributes(fieldName, aliases, doc);
return(new RecordField(attributes, type, orderValue, hasDefaultValue, defaultValue, null, position));
}
/// <summary>
/// Creates a <see cref="RecordField" /> instance.
/// </summary>
/// <param name="fieldName">The field name.</param>
/// <param name="fieldType">The field type.</param>
/// <returns>An instance of the <see cref="RecordField" />.</returns>
internal static RecordField CreateField(string fieldName, TypeSchema fieldType)
{
if (String.IsNullOrEmpty(fieldName))
{
throw new ArgumentException("Field name is not allowed to be null or empty.");
}
if (fieldType == null)
{
throw new ArgumentNullException("fieldType");
}
return(new RecordField(
new NamedEntityAttributes(new SchemaName(fieldName), new List <string>(), String.Empty),
fieldType,
SortOrder.Ascending,
false,
null,
null,
-1));
}
/// <summary>
/// Initializes a new instance of the <see cref="RecordField" /> class.
/// </summary>
/// <param name="namedEntityAttributes">The named entity attributes.</param>
/// <param name="typeSchema">The type schema.</param>
/// <param name="order">The order.</param>
/// <param name="hasDefaultValue">Whether the field has a default value or not.</param>
/// <param name="defaultValue">The default value.</param>
/// <param name="info">The info.</param>
/// <param name="position">The position of the field in the schema.</param>
/// <param name="attributes">The attributes.</param>
internal RecordField(
NamedEntityAttributes namedEntityAttributes,
TypeSchema typeSchema,
SortOrder order,
bool hasDefaultValue,
object defaultValue,
MemberInfo info,
int position,
Dictionary <string, string> attributes)
: base(attributes)
{
this.namedEntityAttributes = namedEntityAttributes;
this.typeSchema = typeSchema;
this.order = order;
this.hasDefaultValue = hasDefaultValue;
this.defaultValue = defaultValue;
this.info = info;
this.position = position;
this.ShouldBeSkipped = false;
this.UseDefaultValue = false;
}
/// <summary>
/// Initializes a new instance of the <see cref="SurrogateSchema" /> class.
/// </summary>
/// <param name="originalType">Type of the original.</param>
/// <param name="surrogateType">Type of the surrogate.</param>
/// <param name="attributes">The attributes.</param>
/// <param name="surrogateSchema">The surrogate schema.</param>
internal SurrogateSchema(
Type originalType,
Type surrogateType,
IDictionary <string, string> attributes,
TypeSchema surrogateSchema)
: base(originalType, attributes)
{
if (originalType == null)
{
throw new ArgumentNullException("originalType");
}
if (surrogateType == null)
{
throw new ArgumentNullException("surrogateType");
}
if (surrogateSchema == null)
{
throw new ArgumentNullException("surrogateSchema");
}
this.surrogateType = surrogateType;
this.surrogateSchema = surrogateSchema;
}
internal SurrogateSchema(Type originalType, Type surrogateType, TypeSchema surrogateSchema)
: this(originalType, surrogateType, new Dictionary <string, string>(), surrogateSchema)
{
}
/// <summary>
/// If reader's is a union, but writer's is not the first schema in the reader's union
/// that matches the writer's schema is recursively resolved against it. If none match, an error is signalled.
/// </summary>
/// <param name="w">The writer schema.</param>
/// <param name="r">The reader schema.</param>
/// <returns>True if match.</returns>
private TypeSchema BuildCore(TypeSchema w, UnionSchema r)
{
return(r.Schemas.Select(rs => this.BuildDynamic(w, rs)).SingleOrDefault(s => s != null));
}
internal MapSchema(TypeSchema keySchema, TypeSchema valueSchema, Type runtimeType)
: this(keySchema, valueSchema, runtimeType, new Dictionary <string, string>())
{
}
internal TypeSchema Build(TypeSchema w, TypeSchema r)
{
this.visited.Clear();
return(this.BuildDynamic(w, r));
}
/// <summary>
/// Implements double dispatch.
/// </summary>
/// <param name="w">The writer schema.</param>
/// <param name="r">The reader schema.</param>
/// <returns>True if match.</returns>
private TypeSchema BuildDynamic(TypeSchema w, TypeSchema r)
{
return(this.BuildCore((dynamic)w, (dynamic)r));
}
/// <summary>
/// Creates a <see cref="ArraySchema" /> instance.
/// </summary>
/// <param name="itemSchema">The schema of the items.</param>
/// <returns>An instance of the <see cref="ArraySchema" />.</returns>
internal static ArraySchema CreateArray(TypeSchema itemSchema)
{
return(new ArraySchema(itemSchema, typeof(Array)));
}
private object ParseUnion(TypeSchema schema, string jsonObject)
{
var unionSchema = (UnionSchema)schema;
return(this.Parse(unionSchema.Schemas[0], jsonObject));
}
/// <summary>
/// Creates a <see cref="MapSchema" /> instance.
/// </summary>
/// <param name="valueSchema">The schema of the values.</param>
/// <returns>An instance of the <see cref="MapSchema" />.</returns>
internal static MapSchema CreateMap(TypeSchema valueSchema)
{
return(new MapSchema(new StringSchema(), valueSchema, typeof(Dictionary <,>)));
}
/// <summary>
/// Initializes a new instance of the <see cref="ArraySchema"/> class.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="runtimeType">Type of the runtime.</param>
internal ArraySchema(
TypeSchema item,
Type runtimeType)
: this(item, runtimeType, new Dictionary <string, string>())
{
}
internal NullableSchema(
Type nullableType,
TypeSchema valueSchema)
: this(nullableType, new Dictionary <string, string>(), valueSchema)
{
}
