types/operations/Operation.proto

//   Copyright 2011-2015 Quickstep Technologies LLC.
//   Copyright 2015-2016 Pivotal Software, Inc.
//   Copyright 2016, Quickstep Research Group, Computer Sciences Department,
//     University of Wisconsin—Madison.
//
//   Licensed 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;

import "types/Type.proto";

message Comparison {
  enum ComparisonID {
    EQUAL = 0;
    NOT_EQUAL = 1;
    LESS = 2;
    LESS_OR_EQUAL = 3;
    GREATER = 4;
    GREATER_OR_EQUAL = 5;
    LIKE = 6;
    NOT_LIKE = 7;
    REGEX_MATCH = 8;
    NOT_REGEX_MATCH = 9;
  }

  required ComparisonID comparison_id = 1;
}

message UnaryOperation {
  enum UnaryOperationID {
    NEGATE = 0;
    CAST = 1;
    DATE_EXTRACT = 2;
  }

  required UnaryOperationID operation_id = 1;

  extensions 32 to max;
}

message CastOperation {
  extend UnaryOperation {
    // Required when operation_id = CAST.
    optional Type target_type = 64;
  }
}

message DateExtractOperation {
  enum Unit {
    YEAR = 0;
    MONTH = 1;
    DAY = 2;
    HOUR = 3;
    MINUTE = 4;
    SECOND = 5;
  }

  extend UnaryOperation {
    // Required when operation_id = DATE_EXTRACT.
    optional Unit unit = 96;
  }
}

message BinaryOperation {
  enum BinaryOperationID {
    ADD = 0;
    SUBTRACT = 1;
    MULTIPLY = 2;
    DIVIDE = 3;
    MODULO = 4;
  }

  required BinaryOperationID operation_id = 1;
}