OData V2 ContextBinding not updated after the size of relatively bound child collection has changed

The description of the issue can be seen here on StackOverflow.

Steps to reproduce the problem:

1. Visit this example page: https://embed.plnkr.co/elNMXE/
2. Click on any (X)-button to remove an item.

What is the expected result? After the change has been successfully applied to the child list, calling getProperty("ToProducts") from the parent context returns the updated length. In the case of the example: From 4 --> 3.

What happens instead? UI5 always reports the length as 4 because the context binding has not been updated after the changes.

Any other information? (attach screenshot if possible)

• A possible workaround is to append another GET request for the parent ContextBinding to the batch when a DELETE request is going to be sent. But it would be nice if UI5 could update the parent binding automatically if the binding has an expand query and a change took place in its child collection that is bound through that expand query.
• Everything works fine when equivalent bindings are applied with a JSONModel (obviously without expand). This makes me wonder if the issue described here is the intended behavior of UI5 or not.
• Haven’t tried with OData V4.

[goligo]

Thanks for reporting this issue and providing samples. This has recently been fixed with

https://github.com/SAP/openui5/commit/ef5f5dc9ba381f72c6a76686e9db1033b434169d

If you change your example page to use openui5nightly.hana.ondemand.com it works as expected.

[boghyon]

You do expand “ToProducts”, but at the same time tell the framework not to wait for the request to be completed, but send additional requests for the lists in parallel.

Sorry, you’re right. This is actually nonsense what I did. 😛 Didn’t think through