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Scanner Services

Overview​

The scanner.services.js file provides a set of core services for interacting with the scanners collection in the database. These services abstract the database logic and provide a clean interface for the controller.

Dependencies​

  • ./scanner.model.js: The Mongoose model for the scanners collection.

scannerCoreServices Object​

The scannerCoreServices object contains the following methods:

add(reqBody)​

  • Description: Creates a new scanner.
  • Parameters: reqBody - The data for the new scanner.
  • Returns: A promise that resolves to the newly created scanner document.

findOne(query, populate = "", select = "", sort = { createdAt: -1 })​

  • Description: Finds a single scanner that matches the given query.
  • Parameters:
    • query: The query to match.
    • populate: (Optional) A string of fields to populate.
    • select: (Optional) A string of fields to select.
    • sort: (Optional) The sort order.
  • Returns: A promise that resolves to the scanner document, or null if not found.

find(query, populate = "", select = "", sort = { createdAt: -1 })​

  • Description: Finds all scanners that match the given query.
  • Parameters:
    • query: The query to match.
    • populate: (Optional) A string of fields to populate.
    • select: (Optional) A string of fields to select.
    • sort: (Optional) The sort order.
  • Returns: A promise that resolves to an array of scanner documents.

findOneAndUpdate(query, update, options = { new: true })​

  • Description: Finds a scanner by a query and updates it.
  • Parameters:
    • query: The query to find the document.
    • update: The update to apply.
    • options: (Optional) Mongoose findOneAndUpdate options.
  • Returns: A promise that resolves to the updated scanner document.

findOneAndDelete(query)​

  • Description: Soft-deletes a scanner that matches the given query.
  • Parameters: query - The query to find the document.
  • Returns: A promise that resolves to the "deleted" scanner document.

Exports​

  • scannerCoreServices: The object containing the core services for scanners.