semantic-network
Version:
A utility library for manipulating a list of links that form a semantic interface to a network of resources.
202 lines • 11.3 kB
JavaScript
"use strict";
var __assign = (this && this.__assign) || function () {
__assign = Object.assign || function(t) {
for (var s, i = 1, n = arguments.length; i < n; i++) {
s = arguments[i];
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
t[p] = s[p];
}
return t;
};
return __assign.apply(this, arguments);
};
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (g && (g = 0, op[0] && (_ = 0)), _) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
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if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.PooledResourceUtil = void 0;
var anylogger_1 = __importDefault(require("anylogger"));
var semantic_link_1 = require("semantic-link");
var apiUtil_1 = require("../apiUtil");
var linkRelation_1 = require("../linkRelation");
var representationUtil_1 = require("../utils/representationUtil");
var resourceMergeFactory_1 = require("../representation/resourceMergeFactory");
var instanceOfCollection_1 = require("../utils/instanceOf/instanceOfCollection");
var log = (0, anylogger_1.default)('PooledCollectionUtil');
/**
* Add to the resolver the mapping between the new document uri and the existing nod uri
* @private
*/
function addToResolver(document, resource, options) {
var _a = __assign({}, options).resolver, resolver = _a === void 0 ? resourceMergeFactory_1.noopResolver : _a;
if (semantic_link_1.LinkUtil.matches(document, linkRelation_1.LinkRelation.Self)) {
var key = semantic_link_1.LinkUtil.getUri(document, linkRelation_1.LinkRelation.Self);
var value = semantic_link_1.LinkUtil.getUri(resource, linkRelation_1.LinkRelation.Self);
if (key && value && key !== value) {
log.debug('resolver add key: %s --> %s', key, value);
resolver.add(key, value);
}
else {
log.debug('no resolution for %s on %s', value, key);
} // key will resolve to Self if not found
}
return resource;
}
/**
* Make a resource item inside a collection, add it to the resolver and
* @return {Promise} containing the created resource
* @private
*/
function makeAndResolveResource(collectionResource, resourceDocument, options) {
return __awaiter(this, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, apiUtil_1.ApiUtil.create(resourceDocument, __assign(__assign({}, options), { createContext: collectionResource }))];
case 1:
result = _a.sent();
if (result) {
log.debug('Pooled resource created: created %s', semantic_link_1.LinkUtil.getUri(result, linkRelation_1.LinkRelation.Self));
return [2 /*return*/, addToResolver(resourceDocument, result, options)];
}
return [2 /*return*/, undefined];
}
});
});
}
var PooledResourceUtil = /** @class */ (function () {
function PooledResourceUtil() {
}
/**
* Used for provisioning a pooled resource. Based on
* the differences it will resolve a resource and may create one in the process.
*
* A pooled collection lives outside of the current context that needs to be resolved. Examples similar to this
* in other contexts are called meta-data or static collections. The main point is that resources from the pooled collection
* are used by reference in the current collection.
*
* When pooled collection is read-only then no resources may be added from other contexts.
*
*/
PooledResourceUtil.sync = function (context, aDocument, options) {
return __awaiter(this, void 0, void 0, function () {
var _a, rel, _b, resolver, resource, _c, uri, existing, documentURI, resolvedUri, foundResource;
return __generator(this, function (_d) {
switch (_d.label) {
case 0:
_a = __assign({}, options), rel = _a.rel, _b = _a.resolver, resolver = _b === void 0 ? resourceMergeFactory_1.noopResolver : _b;
if (!rel) return [3 /*break*/, 2];
return [4 /*yield*/, apiUtil_1.ApiUtil.get(context, options)];
case 1:
_c = _d.sent();
return [3 /*break*/, 3];
case 2:
_c = context;
_d.label = 3;
case 3:
resource = _c;
if (!(resource && (0, instanceOfCollection_1.instanceOfCollection)(resource))) return [3 /*break*/, 10];
uri = semantic_link_1.LinkUtil.getUri(resource, linkRelation_1.LinkRelation.Self);
existing = representationUtil_1.RepresentationUtil.findInCollection(resource, { where: aDocument });
if (!existing) return [3 /*break*/, 4];
return [2 /*return*/, addToResolver(aDocument, existing, options)];
case 4:
if (!semantic_link_1.LinkUtil.getUri(aDocument, linkRelation_1.LinkRelation.Self)) return [3 /*break*/, 8];
documentURI = semantic_link_1.LinkUtil.getUri(aDocument, linkRelation_1.LinkRelation.Self);
if (!documentURI) return [3 /*break*/, 7];
resolvedUri = resolver.resolve(documentURI);
if (!(resolvedUri !== documentURI)) return [3 /*break*/, 5];
foundResource = representationUtil_1.RepresentationUtil.findInCollection(resource, { where: resolvedUri });
if (foundResource) {
return [2 /*return*/, foundResource];
}
else {
log.error('Unexpected error: resource \'%s\' is not found on %s', resolvedUri, uri);
}
return [3 /*break*/, 7];
case 5: return [4 /*yield*/, makeAndResolveResource(resource, aDocument, options)];
case 6:
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
return [2 /*return*/, _d.sent()];
case 7: return [3 /*break*/, 10];
case 8: return [4 /*yield*/, makeAndResolveResource(resource, aDocument, options)];
case 9:
// strategy four: make if we can because we at least might have the attributes
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
return [2 /*return*/, _d.sent()];
case 10:
if (resource && !(0, instanceOfCollection_1.instanceOfCollection)(resource)) {
log.error('resource of collection must be found at %s', semantic_link_1.LinkUtil.getUri(resource, linkRelation_1.LinkRelation.Self));
}
return [2 /*return*/, undefined];
}
});
});
};
/**
* Retrieves a resource from a named resource from the context of a given resource.
*
* @return {Promise<string>} containing the uri resource {@link LinkedRepresentation}
*/
PooledResourceUtil.get = function (resource, collectionName, collectionRel, resourceDocument, options) {
return __awaiter(this, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, apiUtil_1.ApiUtil.get(resource, __assign(__assign({}, options), { rel: collectionRel }))];
case 1:
result = _a.sent();
if (!result) return [3 /*break*/, 3];
log.debug('Pooled collection \'%s\' on %s', collectionName, semantic_link_1.LinkUtil.getUri(resource, linkRelation_1.LinkRelation.Self));
return [4 /*yield*/, this.sync(result, resourceDocument, options)];
case 2:
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore chaos in typing, sorry
return [2 /*return*/, _a.sent()];
case 3: return [2 /*return*/];
}
});
});
};
return PooledResourceUtil;
}());
exports.PooledResourceUtil = PooledResourceUtil;
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