iTwins Client Library

Copyright © Bentley Systems, Incorporated. All rights reserved. See LICENSE.md for license terms and full copyright notice.

iTwin.js is an open source platform for creating, querying, modifying, and displaying Infrastructure Digital Twins. To learn more about the iTwin Platform and its APIs, visit the iTwin developer portal.

If you have questions, or wish to contribute to iTwin.js, see our Contributing guide.

About this Repository

Contains the @itwin/itwins-client package that wraps sending requests to the iTwins service. Visit the iTwins API for more documentation on the iTwins service.

Usage examples

Get list of iTwins

import type { AccessToken } from "@itwin/core-bentley";
import {
  ITwinsAccessClient,
  ITwin,
  ITwinsAPIResponse,
} from "@itwin/itwins-client";

/** Function that queries all iTwins and prints their ids to the console. */
async function printiTwinIds(): Promise<void> {
  const iTwinsAccessClient: ITwinsAccessClient = new ITwinsAccessClient();
  const accessToken: AccessToken = { get_access_token_logic_here };

  const iTwinsResponse: ITwinsAPIResponse<ITwin[]> =
    await iTwinsAccessClient.queryAsync(accessToken, "Project");

  iTwinsResponse.data!.forEach((actualiTwin) => {
    console.log(actualiTwin.id);
  });
}

Get list of iTwins (constructor supplied base url)

import type { AccessToken } from "@itwin/core-bentley";
import {
  ITwinsAccessClient,
  ITwin,
  ITwinsAPIResponse,
} from "@itwin/itwins-client";

/** Function that queries all iTwins and prints their ids to the console. */
async function printiTwinIds(): Promise<void> {
  const iTwinsAccessClient: ITwinsAccessClient = new ITwinsAccessClient("https://api.bentley.com/itwins");
  const accessToken: AccessToken = { get_access_token_logic_here };

  const iTwinsResponse: ITwinsAPIResponse<ITwin[]> =
    await iTwinsAccessClient.queryAsync(accessToken, "Project");

  iTwinsResponse.data!.forEach((actualiTwin) => {
    console.log(actualiTwin.id);
  });
}

Get paged list of iTwins using top/skip

import type { AccessToken } from "@itwin/core-bentley";
import {
  ITwinsAccessClient,
  ITwin,
  ITwinsAPIResponse,
} from "@itwin/itwins-client";

/** Function that queries all iTwins and prints their ids to the console. */
async function printiTwinIds(): Promise<void> {
  const iTwinsAccessClient: ITwinsAccessClient = new ITwinsAccessClient();
  const accessToken: AccessToken = { get_access_token_logic_here };

  const iTwinsResponse: ITwinsAPIResponse<ITwin[]> =
    await iTwinsAccessClient.queryAsync(accessToken, "Project", {
      top: 25,
      skip: 13,
    });

  iTwinsResponse.data!.forEach((actualiTwin) => {
    console.log(actualiTwin.id);
  });
}

Get iTwin by Id

import type { AccessToken } from "@itwin/core-bentley";
import {
  ITwinsAccessClient,
  ITwin,
  ITwinsAPIResponse,
} from "@itwin/itwins-client";

/** Function that gets iTwin by id and prints the id and displayName. */
async function printiTwinIds(): Promise<void> {
  const iTwinsAccessClient: ITwinsAccessClient = new ITwinsAccessClient();
  const accessToken: AccessToken = { get_access_token_logic_here };

  const iTwinsResponse: ITwinsAPIResponse<ITwin> =
    await iTwinsAccessClient.getAsync(
      accessToken,
      "3865240b-cfd9-4ba1-a9e5-65e8813d006b"
    );
  const actualiTwin = iTwinsResponse.data!;
  console.log(actualiTwin.id, actualiTwin.displayName);
}

Get list of Repositories by iTwin Id

import type { AccessToken } from "@itwin/core-bentley";
import {
  ITwinsAccessClient,
  Repository,
  ITwinsAPIResponse,
} from "@itwin/itwins-client";

/** Function that queries all iTwin Repositories and prints their ids to the console. */
async function printiTwinIds(): Promise<void> {
  const iTwinsAccessClient: ITwinsAccessClient = new ITwinsAccessClient();
  const accessToken: AccessToken = { get_access_token_logic_here };

  const iTwinsResponse: ITwinsAPIResponse<Repository[]> =
    await iTwinsAccessClient.queryRepositoriesAsync(
      accessToken,
      "e36e29fa-11c0-4ac8-9ead-e8678ebc393c"
    );

  iTwinsResponse.data!.forEach((actualRepository) => {
    console.log(actualRepository.id);
  });
}

Get list of Repositories by iTwin Id, Class, and Sub Class

import type { AccessToken } from "@itwin/core-bentley";
import {
  ITwinsAccessClient,
  Repository,
  ITwinsAPIResponse,
} from "@itwin/itwins-client";

/** Function that queries all iTwin Repositories and prints their ids to the console. */
async function printiTwinIds(): Promise<void> {
  const iTwinsAccessClient: ITwinsAccessClient = new ITwinsAccessClient();
  const accessToken: AccessToken = { get_access_token_logic_here };

  const iTwinsResponse: ITwinsAPIResponse<Repository[]> =
    await iTwinsAccessClient.queryRepositoriesAsync(
      accessToken,
      "e36e29fa-11c0-4ac8-9ead-e8678ebc393c",
      {
        class: "GeographicInformationSystem",
        subClass: "MapServer",
      }
    );

  iTwinsResponse.data!.forEach((actualRepository) => {
    console.log(actualRepository.id);
  });
}

Create, Update, and Delete an iTwin

import type { AccessToken } from "@itwin/core-bentley";
import type { ITwin, ITwinsAPIResponse } from "@itwin/itwins-client";
import {
  ITwinsAccessClient,
  ITwinClass,
  ITwinSubClass,
} from "@itwin/itwins-client";

/** Function that creates, updates, and then deletes an iTwin. */
async function demoCRUD(): Promise<void> {
  const iTwinsAccessClient: ITwinsAccessClient = new ITwinsAccessClient();
  const accessToken: AccessToken = { get_access_token_logic_here };

  /* Create the iTwin */
  const newiTwin: ITwin = {
    displayName: `APIM iTwin Test Display Name ${new Date().toISOString()}`,
    number: `APIM iTwin Test Number ${new Date().toISOString()}`,
    type: "Bridge",
    subClass: ITwinSubClass.Asset,
    class: ITwinClass.Thing,
    dataCenterLocation: "East US",
    status: "Trial",
  };
  const createResponse: ITwinsAPIResponse<ITwin> =
    await iTwinsAccessClient.createiTwin(accessToken, newiTwin);
  const iTwinId = createResponse.data!.id;

  /* Update the iTwin */
  const updatediTwin: ITwin = {
    displayName: "UPDATED APIM iTwin Test Display Name",
  };
  const updateResponse: ITwinsAPIResponse<ITwin> =
    await iTwinsAccessClient.updateiTwin(accessToken, iTwinId, updatediTwin);

  /* Delete the iTwin */
  const deleteResponse: ITwinsAPIResponse<undefined> =
    await iTwinsAccessClient.deleteiTwin(accessToken, iTwinId);
}

Create and Delete an iTwin Repository

import type { AccessToken } from "@itwin/core-bentley";
import type {
  ITwin,
  Repository,
  ITwinsAPIResponse,
} from "@itwin/itwins-client";
import {
  ITwinsAccessClient,
  ITwinClass,
  ITwinSubClass,
  RepositoryClass,
  RepositorySubClass,
} from "@itwin/itwins-client";

/** Function that creates, updates, and then deletes an iTwin. */
async function demoCRUD(): Promise<void> {
  const iTwinsAccessClient: ITwinsAccessClient = new ITwinsAccessClient();
  const accessToken: AccessToken = { get_access_token_logic_here };

  /* Create the iTwin Repository */
  // Create an iTwin first
  const newiTwin: ITwin = {
    displayName: `APIM iTwin Test Display Name ${new Date().toISOString()}`,
    number: `APIM iTwin Test Number ${new Date().toISOString()}`,
    type: "Bridge",
    subClass: ITwinSubClass.Asset,
    class: ITwinClass.Thing,
    dataCenterLocation: "East US",
    status: "Trial",
  };
  const createResponse: ITwinsAPIResponse<ITwin> =
    await iTwinsAccessClient.createiTwin(accessToken, newiTwin);
  const iTwinId = createResponse.data!.id;

  // Now create the iTwin Repository
  const newRepository: Repository = {
    class: RepositoryClass.GeographicInformationSystem,
    subClass: RepositorySubClass.WebMapService,
    uri: "https://www.sciencebase.gov/arcgis/rest/services/Catalog/5888bf4fe4b05ccb964bab9d/MapServer",
  };
  const createResponse: ITwinsAPIResponse<Repository> =
    await iTwinsAccessClient.createRepository(
      accessToken,
      iTwinId,
      newRepository
    );

  /* Delete the iTwin Repository */
  const repositoryDeleteResponse: ITwinsAPIResponse<undefined> =
    await iTwinsAccessClient.deleteRepository(
      accessToken,
      iTwinId,
      createResponse.data!.id
    );
  // Cleanup:  deleting iTwin
  const iTwinDeleteResponse: ITwinsAPIResponse<undefined> =
    await iTwinsAccessClient.deleteiTwin(accessToken, iTwinId);
}

Contributing to this Repository

For information on how to contribute to this project, please read CONTRIBUTING.md for contribution guidelines, GETTINGSTARTED.md for information on working with the documentation in this repository.