@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]
 *
 * This file is part of Neo4j.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
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 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 = class Foreach extends Clause_1.Clause {
    constructor(variable, listExpr, mapClause) {
        super();
        this.variable = variable;
        this.listExpr = listExpr;
        this.mapClause = mapClause;
    }
    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}`;
    }
};
exports.Foreach = Foreach;
exports.Foreach = Foreach = __decorate([
    (0, mixin_1.mixin)(WithWith_1.WithWith, WithReturn_1.WithReturn, WithSetRemove_1.WithSetRemove, WithDelete_1.WithDelete, WithCreate_1.WithCreate, WithMerge_1.WithMerge)
], Foreach);