azurite/dist/src/table/persistence/QueryInterpreter/QueryNodes/LessThanNode.js

An open source Azure Storage API compatible server

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const tslib_1 = require("tslib");
const BinaryOperatorNode_1 = tslib_1.__importDefault(require("./BinaryOperatorNode"));
const ValueNode_1 = tslib_1.__importDefault(require("./ValueNode"));
/**
 * Represents a logical less than operation between two nodes (the `lt` query operator).
 *
 * This is used in queries which resemble the following:
 *
 *   RowKey lt 'bar'
 *
 * In this case, the `LessThanNode` would be the root node, with the left and right nodes
 * corresponding to the identifier `RowKey` and the constant `bar`, respectively.
 */
class LessThanNode extends BinaryOperatorNode_1.default {
    get name() {
        return `lt`;
    }
    evaluate(context) {
        if (this.left instanceof ValueNode_1.default) {
            return this.left.compare(context, this.right) < 0;
        }
        if (this.right instanceof ValueNode_1.default) {
            return this.right.compare(context, this.left) > 0;
        }
        return this.left.evaluate(context) < this.right.evaluate(context);
    }
}
exports.default = LessThanNode;
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