types/Type.proto

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

syntax = "proto2";

package quickstep.serialization;

message Type {
  enum TypeID {
    INT = 0;
    LONG = 1;
    FLOAT = 2;
    DOUBLE = 3;
    CHAR = 4;
    VAR_CHAR = 5;
    DATETIME = 6;
    DATETIME_INTERVAL = 7;
    YEAR_MONTH_INTERVAL = 8;
    NULL_TYPE = 9;
    DATE = 10;
  }

  required TypeID type_id = 1;
  required bool nullable = 2;

  // The convention for extension numbering is that extensions for a particular
  // TypeID should begin from (type_id + 1) * 32.
  extensions 32 to max;
}

message CharType {
  extend Type {
    // Required when type_id == CHAR.
    optional uint64 length = 160;
  }
}

message VarCharType {
  extend Type {
    // Required when type_id == VAR_CHAR.
    optional uint64 length = 192;
  }
}