@neo4j/graphql
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A GraphQL to Cypher query execution layer for Neo4j and JavaScript GraphQL implementations
57 lines • 2.29 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.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.getConcreteEntities = getConcreteEntities;
const is_concrete_entity_1 = require("./is-concrete-entity");
const is_union_entity_1 = require("./is-union-entity");
/**
* Returns the concrete entities presents in the where argument,
* for interface this implicit behavior was substituted by the typename filters therefore we return all the concrete entities,
* if the where argument is not defined then returns all the concrete entities of the composite target.
* In case of concrete entities returns the entity itself.
**/
function getConcreteEntities(target, whereArgs) {
if ((0, is_concrete_entity_1.isConcreteEntity)(target)) {
return [target];
}
if ((0, is_union_entity_1.isUnionEntity)(target)) {
return getConcreteEntitiesInOnArgumentOfWhereUnion(target, whereArgs);
}
return target.concreteEntities;
}
function getConcreteEntitiesInOnArgumentOfWhereUnion(compositeTarget, whereArgs) {
if (!whereArgs || countObjectKeys(whereArgs) === 0) {
return compositeTarget.concreteEntities;
}
return getMatchingConcreteEntity(compositeTarget, whereArgs);
}
function getMatchingConcreteEntity(compositeTarget, whereArgs) {
const concreteEntities = [];
for (const concreteEntity of compositeTarget.concreteEntities) {
if (whereArgs[concreteEntity.name]) {
concreteEntities.push(concreteEntity);
}
}
return concreteEntities;
}
function countObjectKeys(obj) {
return Object.keys(obj).length;
}
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