@neo4j/cypher-builder/dist/clauses/Foreach.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.Foreach = void 0;
const compile_cypher_if_exists_1 = require("../utils/compile-cypher-if-exists");
const pad_block_1 = require("../utils/pad-block");
const Clause_1 = require("./Clause");
const WithCreate_1 = require("./mixins/clauses/WithCreate");
const WithLet_1 = require("./mixins/clauses/WithLet");
const WithNext_1 = require("./mixins/clauses/WithNext");
const WithMerge_1 = require("./mixins/clauses/WithMerge");
const WithReturn_1 = require("./mixins/clauses/WithReturn");
const WithWith_1 = require("./mixins/clauses/WithWith");
const WithDelete_1 = require("./mixins/sub-clauses/WithDelete");
const WithSetRemove_1 = require("./mixins/sub-clauses/WithSetRemove");
const mixin_1 = require("./utils/mixin");
/**
 * @see {@link https://neo4j.com/docs/cypher-manual/current/clauses/foreach/ | Cypher Documentation}
 * @group Clauses
 */
let Foreach = (() => {
    let _classDecorators = [(0, mixin_1.mixin)(WithWith_1.WithWith, WithReturn_1.WithReturn, WithSetRemove_1.WithSetRemove, WithDelete_1.WithDelete, WithCreate_1.WithCreate, WithMerge_1.WithMerge, WithLet_1.WithLet, WithNext_1.WithNext)];
    let _classDescriptor;
    let _classExtraInitializers = [];
    let _classThis;
    let _classSuper = Clause_1.Clause;
    var Foreach = 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);
            Foreach = _classThis = _classDescriptor.value;
            if (_metadata) Object.defineProperty(_classThis, Symbol.metadata, { enumerable: true, configurable: true, writable: true, value: _metadata });
            __runInitializers(_classThis, _classExtraInitializers);
        }
        variable;
        listExpr;
        mapClause;
        constructor(variable) {
            super();
            this.variable = variable;
        }
        in(listExpr) {
            this.listExpr = listExpr;
            return this;
        }
        do(mapClause) {
            this.mapClause = mapClause;
            return this;
        }
        /** @internal */
        getCypher(env) {
            if (!this.listExpr)
                throw new Error("FOREACH needs a source list after IN using .in()");
            if (!this.mapClause)
                throw new Error("FOREACH needs an updating command using .do()");
            const variableStr = this.variable.getCypher(env);
            const listExpr = this.listExpr.getCypher(env);
            const mapClauseStr = this.mapClause.getCypher(env);
            const nextClause = this.compileNextClause(env);
            const foreachStr = [`FOREACH (${variableStr} IN ${listExpr} |`, (0, pad_block_1.padBlock)(mapClauseStr), `)`].join("\n");
            const setCypher = this.compileSetCypher(env);
            const deleteCypher = (0, compile_cypher_if_exists_1.compileCypherIfExists)(this.deleteClause, env, { prefix: "\n" });
            return `${foreachStr}${setCypher}${deleteCypher}${nextClause}`;
        }
    };
    return Foreach = _classThis;
})();
exports.Foreach = Foreach;