StockCriteriaMapper
Magento\CatalogInventory\Model\ResourceModel\Stock\StockCriteriaMapper
What it does
This class maps search criteria to database queries for Stock inventory entities.
It extends GenericMapper to provide automatic translation of filter conditions, sorting, and pagination when retrieving stock records from the database.
Developers typically don't interact with this class directly; it's used internally by repository classes to build database queries based on SearchCriteria objects.