@knora/api/src/cache/ListNodeV2Cache.js

JavaScript library that handles API requests to Knora

"use strict";
var __extends = (this && this.__extends) || (function () {
    var extendStatics = function (d, b) {
        extendStatics = Object.setPrototypeOf ||
            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
        return extendStatics(d, b);
    };
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
var operators_1 = require("rxjs/operators");
var list_conversion_util_1 = require("../models/v2/lists/list-conversion-util");
var GenericCache_1 = require("./GenericCache");
/**
 * Caches list nodes obtained from Knora.
 * As an optimization, the whole list is requested and cached (all of its nodes) once a list node has been rquested.
 */
var ListNodeV2Cache = /** @class */ (function (_super) {
    __extends(ListNodeV2Cache, _super);
    function ListNodeV2Cache(v2Endpoint) {
        var _this = _super.call(this) || this;
        _this.v2Endpoint = v2Endpoint;
        return _this;
    }
    /**
     * Given a list node IRI, gets it from the cache.
     *
     * The root node of a list should not be requested using this method.
     * This should be left to dependency handling to optimize caching.
     *
     * @param nodeIri the IRI of the list node to be returned.
     */
    ListNodeV2Cache.prototype.getNode = function (nodeIri) {
        return this.getItem(nodeIri);
    };
    ListNodeV2Cache.prototype.getKeyOfItem = function (item) {
        return item.id;
    };
    ListNodeV2Cache.prototype.requestItemFromKnora = function (key, isDependency) {
        if (!isDependency) {
            // not a dependency, get the list node
            return this.v2Endpoint.list.getNode(key)
                .pipe(operators_1.map(function (node) { return [node]; }));
        }
        else {
            // a dependency, get the whole list
            var list = this.v2Endpoint.list.getList(key);
            return list.pipe(operators_1.map(function (rootNode) {
                // Transform the list into an array of all list nodes
                var nodes = list_conversion_util_1.ListConversionUtil.collectNodes(rootNode);
                return nodes.map(function (node) {
                    // Remove references to child nodes to make this consistent:
                    // node route does not return children, list route does
                    node.children = [];
                    return node;
                });
            }));
        }
    };
    ListNodeV2Cache.prototype.getDependenciesOfItem = function (item) {
        if (item.hasRootNode !== undefined) {
            // The whole list will be fetched as a dependency
            // of any given list node
            return [item.hasRootNode];
        }
        else {
            return [];
        }
    };
    return ListNodeV2Cache;
}(GenericCache_1.GenericCache));
exports.ListNodeV2Cache = ListNodeV2Cache;
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