jatitoam / ddd-typescript

import { UniqueEntityId } from "Utilities/Ids/UniqueEntityId";

/**

 * Abstract Entity class

 */

export abstract class Entity<T> {

  /**

   * Id of the entity

   */

  protected readonly _id: UniqueEntityId;

  /**

   * Collection of properties

   */

  protected readonly props: T;

  /**

   * @param T props

   * @param IEntityDefinition definition Needed for each specific entity overriding this entity.  The child entity should not expose this parameter in its own constructor

   * @param UniqueEntityId id If not sent, it generates a UUID

   */

  constructor(props: T, id?: UniqueEntityId) {

    this.props = props;

    this._id = id ? id : new UniqueEntityId();

  }

  /**

   * Gets the id stringified

   *

   * @returns string

   */

  public getIdString(): string {

    return this._id.toString();

  }

  /**

   * Field getter

   *

   * @param field

   *

   * @throws FieldNotFoundError

   */

  public get(field: string): any {

    if (typeof this.props[field] === "undefined") {

      throw new FieldNotFoundError(field);

    }

    return this.props[field];

  }

}