@neo4j/graphql
Version:
A GraphQL to Cypher query execution layer for Neo4j and JavaScript GraphQL implementations
55 lines • 2.15 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.RelationshipSelection = void 0;
const cypher_builder_1 = __importDefault(require("@neo4j/cypher-builder"));
const EntitySelection_1 = require("./EntitySelection");
const RelationshipSelectionPattern_1 = require("./SelectionPattern/RelationshipSelectionPattern");
class RelationshipSelection extends EntitySelection_1.EntitySelection {
constructor({ relationship, alias, targetOverride, optional, }) {
super();
this.optional = optional ?? false;
this.selectionPattern = new RelationshipSelectionPattern_1.RelationshipSelectionPattern({
relationship,
alias,
targetOverride,
});
}
getChildren() {
return [...super.getChildren(), this.selectionPattern];
}
apply(context) {
const { nestedContext, pattern } = this.selectionPattern.apply(context);
// NOTE: Direction not passed (can we remove it from context?)
const match = new cypher_builder_1.default.Match(pattern);
if (this.optional) {
match.optional();
}
return {
nestedContext: nestedContext,
selection: match,
};
}
}
exports.RelationshipSelection = RelationshipSelection;
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