UI Facet targetElement Path with ID

[former_member861214]

Hi,
I have a problem with displaying an UI Facet as I would like to.

I am using ABAP RAP as my backend technology. I created 3 related Entities:
First Entity Projection:
define root view entity test1 provider contract transactional_query as projection on t1

{

@UI.facet: [

{

position: 10,

label : 'Collection',

id : 'C1',

purpose: #STANDARD,

type: #COLLECTION,

targetElement: '_detail'

},

{

position: 10,

id: 'D1',

parentId: 'C1',

purpose: #STANDARD,

type: #LINEITEM_REFERENCE,

label: 'Detail1',

targetElement: '_detail'

},

{

position: 20,

id: 'D2',

parentId: 'C1',

purpose: #STANDARD,

type: #LINEITEM_REFERENCE,

label: 'Detail2',

targetElement: '_detail._detail'

}

]

@UI.lineItem: [ { position: 10, label: 'ID' } ]

key Id,

_detail : redirected to composition child test2

}

Second Entity Projection:

define view entity test2 as projection on t2

{

@UI.lineItem: [ { position: 10, label: 'ID' } ]

key Id,

@UI.lineItem: [ { position: 20, label: 'ParentID' } ]

ParentId,

_parent : redirected to parent test1,

_detail : redirected to composition child test3

}

Third Entity Projection:
define view entity test3 as projection on t3

{

@UI.lineItem: [ { position: 10, label: 'ID' } ]

key Id,

@UI.lineItem: [ { position: 20, label: 'ParentID' } ]

ParentId,

@UI.lineItem: [ { position: 30, label: 'RootID' } ]

ParentParentId,

_parent : redirected to parent test2,

_root

}

So the relationship Model looks as follows: test1 => test2 => test3 with 1..*, 1..*
Now i want to display both test2 and test3 in the UI Facet of test1. I want test3 to show only Nodes,
that redirect to the Node selected on test2. With the given Code i get the following result:

Unfortunately test3 does not get filled. This happens, because my Path for the 'targetElement' in the Facet looks like this:
_detail._detail
The resulting Path, that gets requested ist the following: test1(1)/_detail/_detail
But the Path needs a Key for the first _detail Association. For example: test1(1)/_detail(1)/_detail

Is there any way to solve this issue, or do I have to create own custom elements for the App to make this possible?

Thanks a lot for your help,
Marcel

[ArneVH]

Hi,

It seems I had a similar problem, however I got an explicit error message.

I had some extra context with RAP + draft around my issue however... I fixed it by defining the _detail (first one) association as a 'one to one'. Then the facet can render data.
I fear with a 'to many' relation it's not possible without custom ui elements...

An alternative may be to directly define a _detailDeep association on your root node that immediatley goes to the deepest child. However this won't then be a composition and I'm doubtful you'll be able to get CRUD buttons working in this case...

For reference, my question: https://answers.sap.com/questions/14021678/rap-draft-facet-two-children-deep.html