@neo4j/graphql
Version:
A GraphQL to Cypher query execution layer for Neo4j and JavaScript GraphQL implementations
59 lines • 2.37 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.UpdateOperation = void 0;
const cypher_builder_1 = __importDefault(require("@neo4j/cypher-builder"));
const utils_1 = require("../../../../utils/utils");
const operations_1 = require("./operations");
/**
* This is currently just a dummy tree node,
* The whole mutation part is still implemented in the old way, the current scope of this node is just to contains the nested fields.
**/
class UpdateOperation extends operations_1.Operation {
constructor({ target }) {
super();
// The response fields in the mutation, currently only READ operations are supported in the MutationResponse
this.projectionOperations = [];
this.target = target;
}
getChildren() {
return (0, utils_1.filterTruthy)(this.projectionOperations);
}
addProjectionOperations(operations) {
this.projectionOperations.push(...operations);
}
transpile(context) {
if (!context.target)
throw new Error("No parent node found!");
context.env.topLevelOperationName = "UPDATE";
const clauses = this.getProjectionClause(context);
return { projectionExpr: context.returnVariable, clauses };
}
getProjectionClause(context) {
return this.projectionOperations.map((operationField) => {
return cypher_builder_1.default.utils.concat(...operationField.transpile(context).clauses);
});
}
}
exports.UpdateOperation = UpdateOperation;
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