예제 #1
0
        /// <summary>
        /// Static function to return new instance of EnumSchema
        /// </summary>
        /// <param name="jtok">JSON object for enum schema</param>
        /// <param name="names">list of named schema already parsed in</param>
        /// <param name="encspace">enclosing namespace for the enum schema</param>
        /// <returns>new instance of enum schema</returns>
        internal static EnumSchema NewInstance(JToken jtok, PropertyMap props, SchemaNames names, string encspace)
        {
            SchemaName name    = NamedSchema.GetName(jtok, encspace);
            var        aliases = NamedSchema.GetAliases(jtok, name.Space, name.EncSpace);

            JArray jsymbols = jtok["symbols"] as JArray;

            if (null == jsymbols)
            {
                throw new SchemaParseException("Enum has no symbols: " + name);
            }

            List <string>             symbols   = new List <string>();
            IDictionary <string, int> symbolMap = new Dictionary <string, int>();
            int i = 0;

            foreach (JValue jsymbol in jsymbols)
            {
                string s = (string)jsymbol.Value;
                if (symbolMap.ContainsKey(s))
                {
                    throw new SchemaParseException("Duplicate symbol: " + s);
                }

                symbolMap[s] = i++;
                symbols.Add(s);
            }
            return(new EnumSchema(name, aliases, symbols, symbolMap, props, names));
        }
예제 #2
0
        /// <summary>
        /// Static function to return new instance of the fixed schema class
        /// </summary>
        /// <param name="jtok">JSON object for the fixed schema</param>
        /// <param name="names">list of named schema already parsed in</param>
        /// <param name="encspace">enclosing namespace of the fixed schema</param>
        /// <returns></returns>
        internal static FixedSchema NewInstance(JToken jtok, PropertyMap props, SchemaNames names, string encspace)
        {
            SchemaName name    = NamedSchema.GetName(jtok, encspace);
            var        aliases = NamedSchema.GetAliases(jtok, name.Space, name.EncSpace);

            return(new FixedSchema(name, aliases, JsonHelper.GetRequiredInteger(jtok, "size"), props, names));
        }
예제 #3
0
        /// <summary>
        /// Static function to return new instance of the record schema
        /// </summary>
        /// <param name="type">type of record schema, either record or error</param>
        /// <param name="jtok">JSON object for the record schema</param>
        /// <param name="names">list of named schema already read</param>
        /// <param name="encspace">enclosing namespace of the records schema</param>
        /// <returns>new RecordSchema object</returns>
        internal static RecordSchema NewInstance(Type type, JToken jtok, PropertyMap props, SchemaNames names, string encspace)
        {
            bool   request = false;
            JToken jfields = jtok["fields"];    // normal record

            if (null == jfields)
            {
                jfields = jtok["request"];      // anonymous record from messages
                if (null != jfields)
                {
                    request = true;
                }
            }
            if (null == jfields)
            {
                throw new SchemaParseException("'fields' cannot be null for record");
            }
            if (jfields.Type != JTokenType.Array)
            {
                throw new SchemaParseException("'fields' not an array for record");
            }

            var name          = GetName(jtok, encspace);
            var aliases       = NamedSchema.GetAliases(jtok, name.Space, name.EncSpace);
            var fields        = new List <Field>();
            var fieldMap      = new Dictionary <string, Field>();
            var fieldAliasMap = new Dictionary <string, Field>();
            var result        = new RecordSchema(type, name, aliases, props, fields, request, fieldMap, fieldAliasMap, names);

            int fieldPos = 0;

            foreach (JObject jfield in jfields)
            {
                string fieldName = JsonHelper.GetRequiredString(jfield, "name");
                Field  field     = createField(jfield, fieldPos++, names, name.Namespace); // add record namespace for field look up
                fields.Add(field);
                addToFieldMap(fieldMap, fieldName, field);
                addToFieldMap(fieldAliasMap, fieldName, field);

                if (null != field.aliases)    // add aliases to field lookup map so reader function will find it when writer field name appears only as an alias on the reader field
                {
                    foreach (string alias in field.aliases)
                    {
                        addToFieldMap(fieldAliasMap, alias, field);
                    }
                }
            }
            return(result);
        }