/// <summary>
/// Compares two union schema objects
/// </summary>
/// <param name="obj">union schema object to compare against this schema</param>
/// <returns>true if objects are equal, false otherwise</returns>
public override bool Equals(object obj)
{
if (obj == this)
{
return(true);
}
if (obj != null && obj is UnionSchema)
{
UnionSchema that = obj as UnionSchema;
if (that.Count == Count)
{
for (int i = 0; i < Count; i++)
{
if (!that[i].Equals(this[i]))
{
return(false);
}
}
return(areEqual(that.Props, this.Props));
}
}
return(false);
}
private static StringBuilder Build(IDictionary <string, string> env, Schema s, StringBuilder o)
{
bool firstTime = true;
Schema.Type st = s.Tag;
switch (st)
{
case Schema.Type.Union:
UnionSchema us = s as UnionSchema;
o.Append('[');
foreach (Schema b in us.Schemas)
{
if (!firstTime)
{
o.Append(",");
}
else
{
firstTime = false;
}
Build(env, b, o);
}
return(o.Append(']'));
case Schema.Type.Array:
case Schema.Type.Map:
o.Append("{\"type\":\"").Append(Schema.GetTypeString(s.Tag)).Append("\"");
if (st == Schema.Type.Array)
{
ArraySchema arraySchema = s as ArraySchema;
Build(env, arraySchema.ItemSchema, o.Append(",\"items\":"));
}
else
{
MapSchema mapSchema = s as MapSchema;
Build(env, mapSchema.ValueSchema, o.Append(",\"values\":"));
}
return(o.Append("}"));
case Schema.Type.Enumeration:
case Schema.Type.Fixed:
case Schema.Type.Record:
NamedSchema namedSchema = s as NamedSchema;
var name = namedSchema.Fullname;
if (env.ContainsKey(name))
{
return(o.Append(env[name]));
}
var qname = "\"" + name + "\"";
env.Add(name, qname);
o.Append("{\"name\":").Append(qname);
o.Append(",\"type\":\"").Append(Schema.GetTypeString(s.Tag)).Append("\"");
if (st == Schema.Type.Enumeration)
{
EnumSchema enumSchema = s as EnumSchema;
o.Append(",\"symbols\":[");
foreach (var enumSymbol in enumSchema.Symbols)
{
if (!firstTime)
{
o.Append(",");
}
else
{
firstTime = false;
}
o.Append("\"").Append(enumSymbol).Append("\"");
}
o.Append("]");
}
else if (st == Schema.Type.Fixed)
{
FixedSchema fixedSchema = s as FixedSchema;
o.Append(",\"size\":").Append(fixedSchema.Size.ToString());
}
else // st == Schema.Type.Record
{
RecordSchema recordSchema = s as RecordSchema;
o.Append(",\"fields\":[");
foreach (var field in recordSchema.Fields)
{
if (!firstTime)
{
o.Append(",");
}
else
{
firstTime = false;
}
o.Append("{\"name\":\"").Append(field.Name).Append("\"");
Build(env, field.Schema, o.Append(",\"type\":")).Append("}");
}
o.Append("]");
}
return(o.Append("}"));
default: //boolean, bytes, double, float, int, long, null, string
return(o.Append("\"").Append(s.Name).Append("\""));
}
}
/// <summary>
/// Static class to return new instance of schema object
/// </summary>
/// <param name="jtok">JSON object</param>
/// <param name="names">list of named schemas already read</param>
/// <param name="encspace">enclosing namespace of the schema</param>
/// <returns>new Schema object</returns>
internal static Schema ParseJson(JToken jtok, SchemaNames names, string encspace)
{
if (null == jtok)
{
throw new ArgumentNullException("j", "j cannot be null.");
}
if (jtok.Type == JTokenType.String) // primitive schema with no 'type' property or primitive or named type of a record field
{
string value = (string)jtok;
PrimitiveSchema ps = PrimitiveSchema.NewInstance(value);
if (null != ps)
{
return(ps);
}
NamedSchema schema = null;
if (names.TryGetValue(value, null, encspace, out schema))
{
return(schema);
}
throw new SchemaParseException("Undefined name: " + value);
}
if (jtok is JArray) // union schema with no 'type' property or union type for a record field
{
return(UnionSchema.NewInstance(jtok as JArray, null, names, encspace));
}
if (jtok is JObject) // JSON object with open/close parenthesis, it must have a 'type' property
{
JObject jo = jtok as JObject;
JToken jtype = jo["type"];
if (null == jtype)
{
throw new SchemaParseException("Property type is required");
}
var props = Schema.GetProperties(jtok);
if (jtype.Type == JTokenType.String)
{
string type = (string)jtype;
if (type.Equals("array"))
{
return(ArraySchema.NewInstance(jtok, props, names, encspace));
}
if (type.Equals("map"))
{
return(MapSchema.NewInstance(jtok, props, names, encspace));
}
Schema schema = PrimitiveSchema.NewInstance((string)type, props);
if (null != schema)
{
return(schema);
}
return(NamedSchema.NewInstance(jo, props, names, encspace));
}
else if (jtype.Type == JTokenType.Array)
{
return(UnionSchema.NewInstance(jtype as JArray, props, names, encspace));
}
}
throw new AvroTypeException("Invalid JSON for schema: " + jtok);
}