@neo4j/cypher-builder/dist/pattern/PartialPattern.js

A programmatic API for building Cypher queries for Neo4j

"use strict";
/*
 * Copyright (c) "Neo4j"
 * Neo4j Sweden AB [http://neo4j.com]
 */
var __esDecorate = (this && this.__esDecorate) || function (ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {
    function accept(f) { if (f !== void 0 && typeof f !== "function") throw new TypeError("Function expected"); return f; }
    var kind = contextIn.kind, key = kind === "getter" ? "get" : kind === "setter" ? "set" : "value";
    var target = !descriptorIn && ctor ? contextIn["static"] ? ctor : ctor.prototype : null;
    var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});
    var _, done = false;
    for (var i = decorators.length - 1; i >= 0; i--) {
        var context = {};
        for (var p in contextIn) context[p] = p === "access" ? {} : contextIn[p];
        for (var p in contextIn.access) context.access[p] = contextIn.access[p];
        context.addInitializer = function (f) { if (done) throw new TypeError("Cannot add initializers after decoration has completed"); extraInitializers.push(accept(f || null)); };
        var result = (0, decorators[i])(kind === "accessor" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);
        if (kind === "accessor") {
            if (result === void 0) continue;
            if (result === null || typeof result !== "object") throw new TypeError("Object expected");
            if (_ = accept(result.get)) descriptor.get = _;
            if (_ = accept(result.set)) descriptor.set = _;
            if (_ = accept(result.init)) initializers.unshift(_);
        }
        else if (_ = accept(result)) {
            if (kind === "field") initializers.unshift(_);
            else descriptor[key] = _;
        }
    }
    if (target) Object.defineProperty(target, contextIn.name, descriptor);
    done = true;
};
var __runInitializers = (this && this.__runInitializers) || function (thisArg, initializers, value) {
    var useValue = arguments.length > 2;
    for (var i = 0; i < initializers.length; i++) {
        value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);
    }
    return useValue ? value : void 0;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.PartialPattern = void 0;
const WithWhere_1 = require("../clauses/mixins/sub-clauses/WithWhere");
const mixin_1 = require("../clauses/utils/mixin");
const compile_cypher_if_exists_1 = require("../utils/compile-cypher-if-exists");
const Pattern_1 = require("./Pattern");
const PatternElement_1 = require("./PatternElement");
const labels_to_string_1 = require("./labels-to-string");
/** Partial pattern, cannot be used until connected to a node with {@link to}
 * @group Patterns
 */
let PartialPattern = (() => {
    let _classDecorators = [(0, mixin_1.mixin)(WithWhere_1.WithWhere)];
    let _classDescriptor;
    let _classExtraInitializers = [];
    let _classThis;
    let _classSuper = PatternElement_1.PatternElement;
    var PartialPattern = class extends _classSuper {
        static { _classThis = this; }
        static {
            const _metadata = typeof Symbol === "function" && Symbol.metadata ? Object.create(_classSuper[Symbol.metadata] ?? null) : void 0;
            __esDecorate(null, _classDescriptor = { value: _classThis }, _classDecorators, { kind: "class", name: _classThis.name, metadata: _metadata }, null, _classExtraInitializers);
            PartialPattern = _classThis = _classDescriptor.value;
            if (_metadata) Object.defineProperty(_classThis, Symbol.metadata, { enumerable: true, configurable: true, writable: true, value: _metadata });
            __runInitializers(_classThis, _classExtraInitializers);
        }
        length;
        direction;
        previous;
        properties;
        type;
        constructor(variable, options, previous) {
            super(variable);
            this.type = options.type;
            this.properties = options.properties;
            this.previous = previous;
            this.direction = options.direction ?? "right";
            this.length = options.length;
        }
        to(node, options) {
            return new Pattern_1.NestedPattern(node, options, this);
        }
        /**
         * @internal
         */
        getCypher(env) {
            const prevStr = this.previous.getCypher(env);
            const typeStr = this.getTypeStr(env);
            const relStr = this.variable ? `${this.variable.getCypher(env)}` : "";
            const propertiesStr = this.properties ? this.serializeParameters(this.properties, env) : "";
            const whereStr = (0, compile_cypher_if_exists_1.compileCypherIfExists)(this.whereSubClause, env, { prefix: " " });
            const lengthStr = this.generateLengthStr();
            const leftArrow = this.direction === "left" ? "<-" : "-";
            const rightArrow = this.direction === "right" ? "->" : "-";
            return `${prevStr}${leftArrow}[${relStr}${typeStr}${lengthStr}${whereStr}${propertiesStr}]${rightArrow}`;
        }
        generateLengthStr() {
            if (this.length === undefined)
                return "";
            if (typeof this.length === "number") {
                return `*${this.length}`;
            }
            else if (this.length === "*") {
                return "*";
            }
            else {
                return `*${this.length.min ?? ""}..${this.length.max ?? ""}`;
            }
        }
        getTypeStr(env) {
            if (this.type) {
                return (0, labels_to_string_1.typeToString)(this.type, env);
            }
            return "";
        }
    };
    return PartialPattern = _classThis;
})();
exports.PartialPattern = PartialPattern;