@sap/odata-v4/lib/uri/UnaryExpression.js

OData V4.0 server library

'use strict';

const Expression = require('./Expression');

/**
 * @extends Expression
 * @hideconstructor
 */
class UnaryExpression extends Expression {

    /**
     * Create an instance of UnaryExpression.
     * @param {UnaryExpression.OperatorKind} operator operator
     * @param {Expression} operand operand
     */
    constructor(operator, operand) {
        super(Expression.ExpressionKind.UNARY);
        /**
         * @type {UnaryExpression.OperatorKind}
         * @private
         */
        this._operator = operator;
        /**
         * @type {Expression}
         * @private
         */
        this._operand = operand;
    }

    /**
     * Return the operator.
     * @returns {UnaryExpression.OperatorKind} the operator
     */
    getOperator() {
        return this._operator;
    }

    /**
     * Return the operand.
     * @returns {Expression} the operand
     */
    getOperand() {
        return this._operand;
    }

    /**
     * Return the EDM type of this expression or null if there is none.
     * @returns {?EdmType} the EDM type of this expression or null if there is none
     */
    getType() {
        return this._operand.getType();
    }
}

/**
 * Defined operators.
 * @enum {string}
 * @readonly
 */
UnaryExpression.OperatorKind = {
    MINUS: '-',
    NOT: 'not'
};

module.exports = UnaryExpression;