sedk-neo4j/dist/src/Step.js

Cypher builder and validator for Neo4j

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.Step = void 0;
const Variable_1 = require("./Variable");
class Step {
    constructor() {
        this.matchParts = [];
        this.returnParts = [];
    }
    match(...varLabels) {
        if (varLabels.length === 0) {
            throw new Error('No variable or labels provided');
        }
        this.matchParts.push(...varLabels);
        return this;
    }
    return(...variables) {
        if (variables.length === 0) {
            throw new Error('At least one variable must be provided');
        }
        this.returnParts.push(...variables);
        return this;
    }
    getCypher() {
        const first = this.matchParts[0];
        if (first === undefined) {
            throw new Error('No variable or labels provided');
        }
        const matchArray = (first instanceof Variable_1.Variable)
            ? [first.name, ...this.matchParts.slice(1).map(label => `${label === null || label === void 0 ? void 0 : label.name}`)]
            : ['', ...this.matchParts.map(label => `${label === null || label === void 0 ? void 0 : label.name}`)];
        return `MATCH (${matchArray.join(':')}) RETURN ${this.returnParts.map(it => it.name).join(', ')}`;
    }
    cleanUp() {
        this.matchParts.length = 0;
        this.returnParts.length = 0;
    }
}
exports.Step = Step;
//# sourceMappingURL=Step.js.map