[6.x.x] Vineet Kumar Product Model - Commodity Qualification Function and Updates to Payout to Cashflow function (Update Expectations) (#4438)

* Product Model - Commodity Qualification Function and Updates to `Payout to Cashflow` function

* update exp

* update RELASE.md

* Update RELEASE.md

* Update RELEASE.md

* Update RELEASE.md

* Fix duplicate text in RELEASE.md

Removed duplicate text in the background section.

* Update RELEASE.md for commodity qualification changes

* update release notes

---------

Co-authored-by: Vineet Kumar <vineet.kumar@regnosys.com>
Co-authored-by: Hugo Hills <39260692+hugohills-regnosys@users.noreply.github.com>
Co-authored-by: Vineet Kumar <84881498+winitall01@users.noreply.github.com>
Co-authored-by: eacunaISDA <82891014+eacunaISDA@users.noreply.github.com>
Co-authored-by: payal.khanna <payal.khanna@regnosys.com>

Author: 5 people

RELEASE.md

@@ -1,3 +1,21 @@
+# *Product Model - Commodity Qualification and Cashflow function updates*
+
+_Background_
+
+The qualification of Commodity Products is currently incomplete due to a missing condition. Additionally, modification is required in `Create_CashflowFromSettlementPayout` function to address errors in FX Products.
+
+_What is being released?_
+
+This release includes: 
+1. Modifications made to `Qualify_AssetClass_Commodity`
+2. Removal of redundant condition in `Qualify_Commodity_Swap_FixedFloat`
+3. Addition of `valueDate` in `SettlementDate` condition
+4. Addition of cashflow from `OptionPayout` and `SettlementPayout` in `Create_CashflowFromPayout` function.
+
+_Review Directions_
+
+Changes can be reviewed in PR: [#4438](https://github.com/finos/common-domain-model/pull/4438)
+
 # *Product Model - Updating Qualification Functions to Handle `only exists` Syntax*
 
 _Background_

rosetta-source/src/main/rosetta/product-qualification-func.rosetta

@@ -213,7 +213,8 @@ func Qualify_AssetClass_Commodity: <"Qualifies a product as having the Asset Cla
 
     set is_product:
         // Regular Commodity Swap
-        (economicTerms -> payout count = 2
+        ((economicTerms -> payout count = 2
+                    or (economicTerms -> payout -> CommodityPayout count = 2 and economicTerms -> payout -> FixedPricePayout count = 2))
                 and economicTerms -> payout -> CommodityPayout exists
                 and economicTerms -> payout -> FixedPricePayout exists)
                     // Commodity Basis Swap
@@ -1737,7 +1738,6 @@ func Qualify_Commodity_Swap_FixedFloat: <"Qualifies a product as a Fixed Float C
             [synonym ISDA_Taxonomy_v2 value "Commodity_Swap_FixedFloat"]
     set is_product:
         Qualify_AssetClass_Commodity(economicTerms) = True
-            and economicTerms -> payout count = 2
             and economicTerms -> payout -> CommodityPayout exists
             and economicTerms -> payout -> FixedPricePayout exists
 

rosetta-source/src/main/rosetta/product-template-func.rosetta

@@ -195,9 +195,42 @@ func Create_CashflowFromSettlementPayout: <"Generates two opposite cashflows tha
 
     condition SettlementDate: <"Restricts the function's applicability to the adjustable or relative date for the settlement date.">
         payout -> settlementTerms -> settlementDate -> adjustableOrRelativeDate exists
+            or payout -> settlementTerms -> settlementDate -> valueDate exists
 
     condition SinglePriceAndQuantity: <"Restricts the function's applicability to a single quantity and price.">
         payout -> priceQuantity -> quantitySchedule -> value exists
             and payout -> priceQuantity -> priceSchedule only-element -> value exists
 
     set cashflows: [assetLeg, priceLeg]
+
+func Create_CashflowFromPayout:
+    inputs:
+        payout Payout (1..1) <"The settlement payout from which the cashflows are generated.">
+    output:
+        cashflows Cashflow (2..2)
+    alias settlementPayoutFromOptionPayout:
+        payout -> OptionPayout
+            extract
+                SettlementPayout {
+                    priceQuantity:
+                        ResolvablePriceQuantity {
+                            quantitySchedule: item -> priceQuantity -> quantitySchedule,
+                            priceSchedule: item -> strike -> strikePrice,
+                            ...
+                        },
+                    underlier: underlier,
+                    settlementTerms: settlementTerms,
+                    payerReceiver: payerReceiver,
+                    ...
+                }
+    add cashflows:
+        payout
+            extract
+                switch
+                    OptionPayout then
+                        Create_CashflowFromSettlementPayout(
+                                settlementPayoutFromOptionPayout
+                            ),
+                    SettlementPayout then
+                        Create_CashflowFromSettlementPayout(payout -> SettlementPayout),
+                    default empty