Method getEntityManager

packages/core/src/entity/Collection.ts:437–455

(items: Iterable<T> = [], required = true)

  }

  private getEntityManager(items: Iterable<T> = [], required = true) {
    const wrapped = helper(this.owner);
    let em = wrapped.__em;

    if (!em) {
      for (const i of items) {
        if (i && helper(i).__em) {
          em = helper(i).__em;
          break;
        }
      }
    }

    if (!em && required) {
      throw ValidationError.entityNotManaged(this.owner);
    }

    return em;
  }

  /** The owning-side property this collection is mapped by (the inverse of `mappedBy`); `undefined` for the owning side of m:n. */
  private get mappedByProp(): EntityProperty | undefined {