@neo4j/cypher-builder
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A programmatic API for building Cypher queries for Neo4j
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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.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.Union = void 0;
const Clause_1 = require("./Clause");
/**
* @see {@link https://neo4j.com/docs/cypher-manual/current/clauses/union/ | Cypher Documentation}
* @group Clauses
*/
class Union extends Clause_1.Clause {
constructor(...subqueries) {
super();
this.subqueries = [];
this.subqueries = subqueries.map((s) => s.getRoot());
this.addChildren(...subqueries);
}
all() {
this.unionType = "ALL";
return this;
}
/**
* Adds the clause `DISTINCT` after `UNION`
* @since Neo4j.19
*/
distinct() {
this.unionType = "DISTINCT";
return this;
}
/**
* If importWithCypher is provided, it will be added at the beginning of each subquery except first
* @internal
*/
getCypher(env, importWithCypher) {
const subqueriesStr = this.subqueries.map((s) => s.getCypher(env));
const unionTypeStr = this.unionType ? ` ${this.unionType}` : "";
return subqueriesStr.join(`\nUNION${unionTypeStr}\n${importWithCypher ?? ""}`);
}
}
exports.Union = Union;