@neo4j/cypher-builder
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A programmatic API for building Cypher queries for Neo4j
64 lines (63 loc) • 1.59 kB
JavaScript
;
/*
* Copyright (c) "Neo4j"
* Neo4j Sweden AB [http://neo4j.com]
*/
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 {
node;
label;
/**
* @internal
*/
constructor(node, label) {
super();
this.node = node;
this.label = label;
}
/** @internal */
getCypher(env) {
const nodeId = this.node.getCypher(env);
const labelsStr = this.generateLabelExpressionStr();
return `${nodeId}${labelsStr}`;
}
generateLabelExpressionStr() {
return (0, add_label_token_1.addLabelToken)((0, escape_1.escapeLabel)(this.label));
}
}
exports.Label = Label;
class DynamicLabel extends Label {
expr;
/**
* @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)(exprStr);
return `${nodeId}${labelStr}`;
}
}
exports.DynamicLabel = DynamicLabel;