Method getProperty

lib/src/store.ts:194–228

Gets a property by URL.

(subject: string)

  /** Gets a property by URL. */
  async getProperty(subject: string): Promise<Property> {
    // This leads to multiple fetches!
    const resource = await this.getResourceAsync(subject);
    if (resource == undefined) {
      throw Error(`Property ${subject} is not found`);
    }
    if (resource.error) {
      throw Error(`Property ${subject} cannot be loaded: ${resource.error}`);
    }
    const prop = new Property();
    const datatypeUrl = resource.get(urls.properties.datatype);
    if (datatypeUrl == null) {
      throw Error(
        `Property ${subject} has no datatype: ${resource.getPropVals()}`,
      );
    }
    const shortname = resource.get(urls.properties.shortname);
    if (shortname == null) {
      throw Error(
        `Property ${subject} has no shortname: ${resource.getPropVals()}`,
      );
    }
    const description = resource.get(urls.properties.description);
    if (description == null) {
      throw Error(
        `Property ${subject} has no description: ${resource.getPropVals()}`,
      );
    }
    const classTypeURL = resource.get(urls.properties.classType)?.toString();
    prop.classType = classTypeURL;
    prop.shortname = shortname.toString();
    prop.description = description.toString();
    prop.datatype = datatypeFromUrl(datatypeUrl.toString());
    return prop;
  }

  /**
   * This is called when Errors occur in some of the library functions. Set your