@neo4j/graphql
Version:
A GraphQL to Cypher query execution layer for Neo4j and JavaScript GraphQL implementations
57 lines • 2.54 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 __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.compilePredicateReturn = compilePredicateReturn;
const cypher_builder_1 = __importDefault(require("@neo4j/cypher-builder"));
const compile_cypher_1 = require("../../../utils/compile-cypher");
const build_clause_1 = require("../../utils/build-clause");
/**
* Compiles Cypher, parameters and subqueries in the same Cypher Builder environment.
*
* The subqueries contain variables required by the predicate, and if they are not compiled with the same
* environment, the predicate will be referring to non-existent variables and will re-assign variable from the subqueries.
*/
function compilePredicateReturn({ predicateReturn, indexPrefix, context, }) {
const result = { cypher: "", params: {} };
const { predicate, preComputedSubqueries } = predicateReturn;
let subqueries;
if (predicate) {
const predicateCypher = new cypher_builder_1.default.Raw((env) => {
const predicateStr = (0, compile_cypher_1.compileCypher)(predicate, env);
if (preComputedSubqueries && !preComputedSubqueries.empty) {
// Assign the Cypher string to a variable outside of the scope of the compilation
subqueries = (0, compile_cypher_1.compileCypher)(preComputedSubqueries, env);
}
return predicateStr;
});
const { cypher, params } = (0, build_clause_1.buildClause)(predicateCypher, {
context,
prefix: `authorization_${indexPrefix || ""}`,
});
result.cypher = cypher;
result.params = params;
result.subqueries = subqueries;
}
return result;
}
//# sourceMappingURL=compile-predicate-return.js.map