Overriding method in framework graph abstract class

Question

Is it possible to override a method in a framework graph abstract class? I am attempting to override a method in the 24R2 Sales Order entry screen for the Add button on the dialog that opens when the Add Items button on the Details tab is selected -- Inventory Lookup. The method is PX.Objects.Extensions.AddItemLookup.AddItemLookupBaseExt<TGraph,TDocument,TItemInfo,TItemFilter>.AddSelectedItems(). I have tried extending it like this including the full class hierarchy:

public class KRSOOrderEntry_Extension : 
PXGraphExtension<AddItemLookupBaseExt<SOOrderEntry, SOOrder, SOOrderSiteStatusSelected, SOSiteStatusFilter>, 
SiteStatusLookupExt<SOOrderEntry,SOOrder, SOLine, SOOrderSiteStatusSelected, SOSiteStatusFilter>, 
AlternateIDLookupExt<SOOrderEntry, SOOrder, SOLine, SOOrderSiteStatusSelected, SOSiteStatusFilter, SOOrderSiteStatusSelected.salesUnit>, 
SOOrderSiteStatusLookupExt, 
SOOrderEntry>

and I receive a runtime error:

“Graph extension KRSOAddItemLocation.KRSOOrderEntry_Extension cannot refer to the following abstract graph extensions that are not marked as [PXProtectedAccess]: PX.Objects.Extensions.AddItemLookup.AddItemLookupBaseExt`4[PX.Objects.SO.SOOrderEntry,PX.Objects.SO.SOOrder,PX.Objects.SO.SOOrderSiteStatusSelected,PX.Objects.SO.SOSiteStatusFilter], PX.Objects.Extensions.AddItemLookup.SiteStatusLookupExt`5[PX.Objects.SO.SOOrderEntry,PX.Objects.SO.SOOrder,PX.Objects.SO.SOLine,PX.Objects.SO.SOOrderSiteStatusSelected,PX.Objects.SO.SOSiteStatusFilter], PX.Objects.Extensions.AddItemLookup.AlternateIDLookupExt`6[PX.Objects.SO.SOOrderEntry,PX.Objects.SO.SOOrder,PX.Objects.SO.SOLine,PX.Objects.SO.SOOrderSiteStatusSelected,PX.Objects.SO.SOSiteStatusFilter,PX.Objects.SO.SOOrderSiteStatusSelected+salesUnit].”

Best answer by svwk05

Hello @Tony Lanzer

Can you try the following code

public class SOOrderGraphExt : PXGraphExtension<SOOrderSiteStatusLookupExt, SOOrderEntry>
{
    public static bool IsActive() => true;

    [PXOverride]
    public virtual IEnumerable ShowItemsHandler(PXAdapter adapter)

    {
        //Custom logic
        return adapter.Get();

    }
}

Hope this helps!!!

svwk05 · Accepted Answer

Hello ​@Tony LanzerCan you try the following codepublic class SOOrderGraphExt : PXGraphExtension<SOOrderSiteStatusLookupExt, SOOrderEntry>{    public static bool IsActive() => true;    [PXOverride]    public virtual IEnumerable ShowItemsHandler(PXAdapter adapter)    {        //Custom logic        return adapter.Get();    }}Hope this helps!!!

Tony Lanzer · Answer

I got this working byremoving the abstract classes from the hierarchy, you’re right ​@Saikrishna V, thank you, and I’ll mark your response as the answer. Shout out to ​@darylbowmanin this post I found that first led me to a resolution:public class KRSOOrderEntry_Extension : PXGraphExtension<SOOrderSiteStatusLookupExt,SOOrderEntry>

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