plywood
Version:
A query planner and executor
36 lines (35 loc) • 1.59 kB
JavaScript
import { __extends } from "tslib";
import { Set } from '../datatypes';
import { ChainableUnaryExpression, Expression, } from './baseExpression';
var SubtractExpression = (function (_super) {
__extends(SubtractExpression, _super);
function SubtractExpression(parameters) {
var _this = _super.call(this, parameters, dummyObject) || this;
_this._ensureOp('subtract');
_this._checkOperandTypes('NUMBER');
_this._checkExpressionTypes('NUMBER');
_this.type = 'NUMBER';
return _this;
}
SubtractExpression.fromJS = function (parameters) {
return new SubtractExpression(ChainableUnaryExpression.jsToValue(parameters));
};
SubtractExpression.prototype._calcChainableUnaryHelper = function (operandValue, expressionValue) {
if (operandValue === null || expressionValue === null)
return null;
return Set.crossBinary(operandValue, expressionValue, function (a, b) { return a - b; });
};
SubtractExpression.prototype._getSQLChainableUnaryHelper = function (dialect, operandSQL, expressionSQL) {
return "(".concat(operandSQL, "-").concat(expressionSQL, ")");
};
SubtractExpression.prototype.specialSimplify = function () {
var _a = this, operand = _a.operand, expression = _a.expression;
if (expression.equals(Expression.ZERO))
return operand;
return this;
};
SubtractExpression.op = 'Subtract';
return SubtractExpression;
}(ChainableUnaryExpression));
export { SubtractExpression };
Expression.register(SubtractExpression);