@neo4j/cypher-builder
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A programmatic API for building Cypher queries for Neo4j
97 lines (96 loc) • 4.99 kB
JavaScript
;
/*
* 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.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 = (() => {
let _classDecorators = [(0, mixin_1.mixin)(WithWhere_1.WithWhere)];
let _classDescriptor;
let _classExtraInitializers = [];
let _classThis;
let _classSuper = CypherASTNode_1.CypherASTNode;
var ListComprehension = 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);
ListComprehension = _classThis = _classDescriptor.value;
if (_metadata) Object.defineProperty(_classThis, Symbol.metadata, { enumerable: true, configurable: true, writable: true, value: _metadata });
__runInitializers(_classThis, _classExtraInitializers);
}
variable;
listExpr;
mapExpr; // Expression for list mapping
constructor(variable) {
super();
this.variable = variable;
}
/** Sets the list expression to be used for the comprehension. If called twice, the expression will be overriden */
in(listExpr) {
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}]`;
}
};
return ListComprehension = _classThis;
})();
exports.ListComprehension = ListComprehension;