Code for position size/value adjustment was simplified in CorporateAc…

…tion class.

jal/db/operations.py

@@ -1209,16 +1209,8 @@ def processLedger(self, ledger):
                 ledger.appendTransaction(self, BookAccount.Incomes, -qty, category=PredefinedCategory.Interest, peer=self._broker)
             else:
                 for trade in closed_trades:
-                    if self._asset.id() == asset.id():
-                        if self._subtype == CorporateAction.Split:
-                            adj_coef = (self._qty / qty, qty / self._qty)  # Price and quantity 1:N adjustment for split
-                        elif self._subtype == CorporateAction.SpinOff or self._subtype == CorporateAction.Merger:
-                            adj_coef = (share, Decimal('1'))  # Cost basis adjustment according to corporate action data
-                        else:
-                            assert False, f"Unexpected corporate action type {self._subtype}"
-                    else:
-                        adj_coef = (share * self._qty / qty, qty / self._qty)
-                    self._account.open_trade(trade, asset, modified_by=self, adjustment=adj_coef)
+                    cost_size_adjustment = (share * self._qty / qty, qty / self._qty)
+                    self._account.open_trade(trade, asset, modified_by=self, adjustment=cost_size_adjustment)
                 ledger.appendTransaction(self, BookAccount.Assets, qty, asset_id=asset.id(), value=value)
 
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