@neo4j/cypher-builder/dist/references/Label.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.
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.DynamicLabel = exports.Label = void 0;
const CypherASTNode_1 = require("../CypherASTNode");
const add_label_token_1 = require("../utils/add-label-token");
const escape_1 = require("../utils/escape");
/** Represents a label attached to a {@link NodeRef | Node}
 * @group Variables
 * @example
 *
 * ```js
 * movies.label("Movie")
 * ```
 *
 * _Cypher:_
 * ```cypher
 * this0:Movie
 * ```
 */
class Label extends CypherASTNode_1.CypherASTNode {
    /**
     * @internal
     */
    constructor(node, label) {
        super();
        this.node = node;
        this.label = label;
    }
    /** @internal */
    getCypher(env) {
        const nodeId = this.node.getCypher(env);
        const labelsStr = this.generateLabelExpressionStr(env);
        return `${nodeId}${labelsStr}`;
    }
    generateLabelExpressionStr(env) {
        return (0, add_label_token_1.addLabelToken)(env.config.labelOperator, (0, escape_1.escapeLabel)(this.label));
    }
}
exports.Label = Label;
class DynamicLabel extends Label {
    /**
     * @internal
     */
    constructor(node, expr) {
        super(node, "");
        this.expr = expr;
    }
    /** @internal */
    getCypher(env) {
        const nodeId = this.node.getCypher(env);
        const exprStr = `$(${this.expr.getCypher(env)})`;
        const labelStr = (0, add_label_token_1.addLabelToken)(env.config.labelOperator, exprStr);
        return `${nodeId}${labelStr}`;
    }
}
exports.DynamicLabel = DynamicLabel;