11 most commonly used FormHandlers in ATG

Here are some of the commonly used FormHandlers, although ATG provides many out of the box FormHandlers and even we can write our own custom FormHandlers by extending GenericFormHandler class provided by ATG.

CartModifierFormHandler -- This formhandler is used to modify a ShoppingCart by adding items to it, deleting items from it, modifying the quantities of items in it, and preparing it for the checkout process.

ExpressCheckoutFormHandler -- The ExpressCheckoutFormHAndler is used to expedite the checking out of an Order. This supports creating a maximum of one Profile derived HardgoodShippingGroup and one Profile derived CreditCard, followed by committing the Order.

SaveOrderFormHandler -- The SaveOrderFormHandler is used to save the user's current Order based on a descriptive name that the user specifies. A new empty Order is then made the user's current shopping cart. If a descriptive name for the Order is not specified, then one is created based on the user's Locale and date and time.

ShippingGroupFormHandler -- The ShippingGroupFormHandler is used to associate ShippingGroups with the various Order pieces. This component is used during the Order checkout process, and any Order successfully processed by the ShippingGroupFormHandler is ready for the next checkout phase, which may be Payment.

PaymentGroupFormHandler -- The PaymentGroupFormHandler is used to associate PaymentGroups with the various Order pieces. This component is used during the Order checkout process, and any Order successfully processed by the PaymentGroupFormHandler is ready for the next checkout phase, which may be confirmation.

CommitOderFormHandler -- The CommitOrderFormHandler is used to submit the Order for final confirmation. This calls the OrderManager's processOrder method. If there are no errors with processing the Order, then the current Order in the user's ShoppingCart will be set to null and the submitted Order will become the ShoppingCart's last Order.

CancelOderFormHandler -- The CancelOrderFormHandler is used to cancel the user's current Order, which deletes the Order from the ShoppingCart.

RepositoryFromHandler -- Saves repository data to a database.

ProfileFormHandler -- Connects forms with user profiles stored in a profile repository.

SearchFormHandler -- Specifies properties available to a search engine.

SimpleSQLFormHandler -- Works with form data that is stored in a SQL database.