@loopback/repository
Version:
Define and implement a common set of interfaces for interacting with databases
40 lines • 2.27 kB
JavaScript
;
// Copyright IBM Corp. and LoopBack contributors 2018,2019. All Rights Reserved.
// Node module: @loopback/repository
// This file is licensed under the MIT License.
// License text available at https://opensource.org/licenses/MIT
Object.defineProperty(exports, "__esModule", { value: true });
exports.createReferencesManyAccessor = void 0;
const tslib_1 = require("tslib");
const debug_1 = tslib_1.__importDefault(require("debug"));
const references_many_helpers_1 = require("./references-many.helpers");
const references_many_inclusion_resolver_1 = require("./references-many.inclusion-resolver");
const references_many_repository_1 = require("./references-many.repository");
const debug = (0, debug_1.default)('loopback:repository:relations:references-many:accessor');
/**
* Enforces a ReferencesMany constraint on a repository
*/
function createReferencesManyAccessor(referencesManyMetadata, targetRepoGetter, sourceRepository) {
const meta = (0, references_many_helpers_1.resolveReferencesManyMetadata)(referencesManyMetadata);
debug('Resolved ReferencesMany relation metadata: %o', meta);
const result = async function getTargetInstancesOfReferencesMany(sourceId) {
const foreignKey = meta.keyFrom;
const primaryKey = meta.keyTo;
const sourceModel = await sourceRepository.findById(sourceId);
const foreignKeyValue = sourceModel[foreignKey];
// workaround to check referential integrity.
// should be removed once the memory connector ref integrity is done
// GH issue: https://github.com/loopbackio/loopback-next/issues/2333
if (!foreignKeyValue) {
return undefined;
}
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const constraint = { [primaryKey]: foreignKeyValue };
const constrainedRepo = new references_many_repository_1.DefaultReferencesManyRepository(targetRepoGetter, constraint);
return constrainedRepo.get();
};
result.inclusionResolver = (0, references_many_inclusion_resolver_1.createReferencesManyInclusionResolver)(meta, targetRepoGetter);
return result;
}
exports.createReferencesManyAccessor = createReferencesManyAccessor;
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