@itwin/presentation-hierarchies
Version:
A package for creating hierarchies based on data in iTwin.js iModels.
30 lines • 1.81 kB
JavaScript
/*---------------------------------------------------------------------------------------------
* Copyright (c) Bentley Systems, Incorporated. All rights reserved.
* See LICENSE.md in the project root for license terms and full copyright notice.
*--------------------------------------------------------------------------------------------*/
import { concatMap, map, of } from "rxjs";
import { createNodeIdentifierForLogging, createOperatorLoggingNamespace, LOGGING_NAMESPACE_INTERNAL } from "../../internal/Common.js";
import { log } from "../../internal/LoggingUtils.js";
import { releaseMainThreadOnItemsCount } from "../../internal/operators/ReleaseMainThread.js";
const OPERATOR_NAME = "DetermineChildren";
/** @internal */
export const LOGGING_NAMESPACE = createOperatorLoggingNamespace(OPERATOR_NAME, LOGGING_NAMESPACE_INTERNAL);
/**
* Ensures all input nodes have their children determined.
*
* @internal
*/
export function createDetermineChildrenOperator(hasNodes) {
return function (nodes) {
return nodes.pipe(log({ category: LOGGING_NAMESPACE, message: /* c8 ignore next */ (n) => `in: ${createNodeIdentifierForLogging(n)}` }), releaseMainThreadOnItemsCount(200), concatMap((n) => {
if (n.children !== undefined) {
return of(n);
}
return hasNodes(n).pipe(log({
category: LOGGING_NAMESPACE,
message: /* c8 ignore next */ (hasChildrenFlag) => `${createNodeIdentifierForLogging(n)}: determined children: ${hasChildrenFlag}`,
}), map((hasChildrenFlag) => Object.assign(n, { children: hasChildrenFlag })));
}), log({ category: LOGGING_NAMESPACE, message: /* c8 ignore next */ (n) => `out: ${createNodeIdentifierForLogging(n)}` }));
};
}
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