UpdateHandler
Magento\Eav\Model\ResourceModel\UpdateHandler
What it does
This class handles updating EAV (Entity-Attribute-Value) attribute data when an entity is saved.
It compares the current entity data with a snapshot, determines which attributes need to be inserted, updated, or deleted, and persists those changes to the database.
Developers typically don't call this directly - it's automatically invoked by Magento's entity manager when saving EAV entities like products or customers.
Public Methods
- execute()