[SOLVED] Price components for individual line items?

Thank-you both for your quick response. I will post back after I have tried this out.

There must be something I am missing, explaining poorly, or perhaps I am trying to access the order information incorrectly.

I am looking for details on the individual items in the order after payment has gone through. For instance, I would like to know how many of each item there are, the amounts of any discounts per item, the amounts of any taxes per item, and the list price per item. The purpose is to update a POS system used for inventory management and accounting.

I am using hook_commerce_payment_order_paid_in_full($transaction) and looking at $transaction I see what follows below, which is for a cart with 3 items in it, of which one has the quantity set to 3 and the other two have a quantity of 1. There is a discount on all items and varying tax rates. Based on rszrama's response I was expecting more information in the commerce_line_items array. I have searched the commerce api for a function that would either load the order as a whole or the individual line items, but have not found what I am after.

From my reading it seems that hook_commerce_cart_order_refresh (mentioned in #2) is for refreshing the information in the cart, not for accessing the details of the line items.

Pointers in the right direction would be much appreciated.

stdClass Object
(
    [order_number] => 12
    [revision_id] => 73
    [revision_uid] => 4
    [mail] => me@here.com
    [status] => checkout_review
    [log] => Customer continued to the next checkout page via a submit button.
    [revision_timestamp] => 1332369616
    [revision_hostname] => 127.0.0.1
    [data] => Array
        (
            [payment_method] => commerce_payment_example|commerce_payment_commerce_payment_example
            [commerce_payment_example] => Array
                (
                    [name] => asdf
                )

        )

    [order_id] => 12
    [type] => commerce_order
    [uid] => 4
    [created] => 1332369467
    [changed] => 1332369616
    [hostname] => 127.0.0.1
    [commerce_line_items] => Array
        (
            [und] => Array
                (
                    [0] => Array
                        (
                            [line_item_id] => 24
                        )

                    [1] => Array
                        (
                            [line_item_id] => 25
                        )

                    [2] => Array
                        (
                            [line_item_id] => 26
                        )

                )

        )

    [commerce_order_total] => Array
        (
            [und] => Array
                (
                    [0] => Array
                        (
                            [amount] => 6246
                            [currency_code] => CAD
                            [data] => Array
                                (
                                    [components] => Array
                                        (
                                            [0] => Array
                                                (
                                                    [name] => base_price
                                                    [price] => Array
                                                        (
                                                            [amount] => 7349
                                                            [currency_code] => CAD
                                                            [data] => Array
                                                                (
                                                                )

                                                        )

                                                    [included] => 1
                                                )

                                            [1] => Array
                                                (
                                                    [name] => tax|gst
                                                    [price] => Array
                                                        (
                                                            [amount] => 367.45
                                                            [currency_code] => CAD
                                                            [data] => Array
                                                                (
                                                                    [tax_rate] => Array
                                                                        (
                                                                            [name] => gst
                                                                            [display_title] => 5% Tax
                                                                            [description] => 
                                                                            [rate] => 0.05
                                                                            [type] => sales_tax
                                                                            [rules_component] => commerce_tax_rate_gst
                                                                            [default_rules_component] => 1
                                                                            [price_component] => tax|gst
                                                                            [calculation_callback] => commerce_tax_rate_calculate
                                                                            [module] => commerce_tax_ui
                                                                            [title] => 5% Tax
                                                                            [admin_list] => 1
                                                                        )

                                                                )

                                                        )

                                                    [included] => 
                                                )

                                            [2] => Array
                                                (
                                                    [name] => discount
                                                    [price] => Array
                                                        (
                                                            [amount] => -1470
                                                            [currency_code] => CAD
                                                            [data] => Array
                                                                (
                                                                )

                                                        )

                                                    [included] => 1
                                                )

                                        )

                                )

                        )

                )

        )

    [commerce_customer_billing] => Array
        (
            [und] => Array
                (
                    [0] => Array
                        (
                            [profile_id] => 8
                        )

                )

        )

    [rdf_mapping] => Array
        (
        )

)

Of course the "D'oh!" moment came mere minutes after posting the above.

It seems the details shown in $transaction are from the commerce_order entity and to get the line item details you need to load the commerce_line_item entity. The following loads the line item details for the first line item in the order above:

$line_item_details = entity_load('commerce_line_item', array(24));

Thanks for your time rszrama and fp!

And now marked as fixed...