title: SAP OData Binding an N-to-1 association to a text field in sapui5
body: <p>I am creating an OData model in SAP Netweaver.
  I have an entity which represents some node in a tree-like structured model. Each entity has its own identifier and also has the identifier of its unique parent( if one exists). I have created 2 associations, one 0 to M from a node to its children, and one 0 to 0 from a node to its parent. Everything works rather good But I am stuck with binding details of the parent in an xml view which is bound to a child. Here is in detail what i have and what i want to achieve</p>
  
  <p>a) I bind the xml view with a distinct node of my model. It works fine and I can call properties of the node within this view with their relative names.
  b) The view uses a standard sap.m.Page, and in text i try to bind the following</p>
  
  <pre><code>&lt;Page text="{DESCRIPTION} {PARENT/DESCRIPTION}"&gt;
      .......
  &lt;/Page&gt;
  </code></pre>
  
  <p>when the view is shown the description of the parent is missing. I have checked the odata service link and when i put the suffix /PARENT/DESCRIPTION to a node I get the correct answer.</p>
  
  <p>So in general my question is if one has an 1 to 1 association in an OData model, how can one do data binding in text fields of sapui5 xml views. </p>
  
  <p>I know I could simply program in the controller to read this properties and set the text, or maybe even try with a formatter but those options seem to be very ugly and unnecessary.</p>
  
  <p>Thank you for your responses</p>