Override method magento 2

Question

I am using magento 2.4.3 EE version

Is their any way to override below method

    protected function _calculate($rule, $item, $qty, $rulePercent)

for below classes

\Magento\SalesRule\Model\Rule::TO_PERCENT_ACTION =>
\Magento\SalesRule\Model\Rule\Action\Discount\ToPercent::class,
\Magento\SalesRule\Model\Rule::BY_PERCENT_ACTION =>
\Magento\SalesRule\Model\Rule\Action\Discount\ByPercent::class,
\Magento\SalesRule\Model\Rule::TO_FIXED_ACTION => \Magento\SalesRule\Model\Rule\Action\Discount\ToFixed::class,
\Magento\SalesRule\Model\Rule::BY_FIXED_ACTION => \Magento\SalesRule\Model\Rule\Action\Discount\ByFixed::class,
\Magento\SalesRule\Model\Rule::CART_FIXED_ACTION =>
\Magento\SalesRule\Model\Rule\Action\Discount\CartFixed::class,
\Magento\SalesRule\Model\Rule::BUY_X_GET_Y_ACTION =>
\Magento\SalesRule\Model\Rule\Action\Discount\BuyXGetY::class,

The _calculate method is common method for the above classes. I want to add some code in all these class to make changes in all cart rules.

Is there anyway to do within module ? I know about extending class & use of plugins so some idea needed on modifying this method for all classes at once.

Answer 1

You might just need to take a second look at these classes. From my review of them, only ByPercent contains a protected _calculate($rule, $item, $qty, $rulePercent) method that would require a class extension. ToPercent extends from ByPercent, so overriding that method should resolve both.

As for the other classes, they appear only to have public calculate($rule, $item, $qty) methods, so a single plugin should suffice if you need to modify it in all classes. If you're really only interested in the protected method, though, than a single class extension of ByPercent is all you need.