Hi,
I have a problem and need your help in solving the same. I am a newbie in SAPUI5 
I am creating a Master/Detail SAP UI5 application which displays list of Articles on left Master page and Variants on Detail page. The implementation is similar to EPM_OIA_BPOENINV example, SAP provided in 740, creating object of Shell to hold both Master and Detail XML views.
I created two entity sets, ARTICLEINFOSET and VARIANTINFOSET and maintained navigation between them. It's working perfectly fine, with 2 Odata services including BATCH operations to save the data.
The Model is set to SAP.UI.GETCORE() by passing url to Model object:
var url = model.Config.getServiceUrl();
m = new sap.ui.model.odata.ODataModel(url, true);
sap.ui.getCore().setModel(m);
So all Odata requests are now binded to this level.
In the Master view, I defined sap.m.List with "items" attribute pointing to "{path : '/ARTICLEINFOSET'}". This calls OData service and fetches the Articles and binds to the List.
In Detail view, I defined sap.m.Table with with "items" attribute pointing to "{path : '/VARIANTINFOSET'}". This calls OData service and fetches the Variants, for the corresponding Article selected in the left navigation and binds to the List.
Now, the problem, I have a custom button declared in Detail Footer section which on clicking, gives a Mass Update pop-up, which on entering a value, the corresponding data should be updated back to Sales Order Item Quantity field in all rows. And here I am stuck. I am not getting clue on how to update data which is bound to the table.
As mentioned, all my data getting displayed in the view is present in Model, which is bound at application level.I don't have explicit Table declarations in javascript.
Model's Default Binding Mode is "OneWay". "TwoWay" is not working.It's only updating first row and then binding for next rows, it's showing getAggregation is NULL. So I need to do this change only by "OneWay".
Request you all to guide me in solving this issue.
