@neo4j/cypher-builder
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A programmatic API for building Cypher queries for Neo4j
69 lines (68 loc) • 3.06 kB
JavaScript
;
/*
* 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.ListComprehension = void 0;
const CypherASTNode_1 = require("../../CypherASTNode");
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");
/** Represents a List comprehension
* @see {@link https://neo4j.com/docs/cypher-manual/current/syntax/lists/#cypher-list-comprehension | Cypher Documentation}
* @group Lists
*/
let ListComprehension = class ListComprehension extends CypherASTNode_1.CypherASTNode {
constructor(variable, listExpr) {
super();
this.variable = variable;
this.listExpr = listExpr;
}
in(listExpr) {
if (this.listExpr)
throw new Error("Cannot set 2 lists in list comprehension IN");
this.listExpr = listExpr;
return this;
}
map(mapExpr) {
this.mapExpr = mapExpr;
return this;
}
/**
* @internal
*/
getCypher(env) {
if (!this.listExpr)
throw new Error("List Comprehension needs a source list after IN using .in()");
const whereStr = (0, compile_cypher_if_exists_1.compileCypherIfExists)(this.whereSubClause, env, { prefix: " " });
const mapStr = (0, compile_cypher_if_exists_1.compileCypherIfExists)(this.mapExpr, env, { prefix: " | " });
const listExprStr = this.listExpr.getCypher(env);
const varCypher = this.variable.getCypher(env);
return `[${varCypher} IN ${listExprStr}${whereStr}${mapStr}]`;
}
};
exports.ListComprehension = ListComprehension;
exports.ListComprehension = ListComprehension = __decorate([
(0, mixin_1.mixin)(WithWhere_1.WithWhere)
], ListComprehension);