Re: Setting 1 to Many Associations and possible help represeting on screen

Hello Alexander,

with associations in BODL you have two possibilities:

• Keywords "using"
  • You need an Alternative Key at the target node.
    By definition an Alternative Key identies uniquely a single node instance.
    Therefore this kind of association can have the multiplicity
    • [0,1] = optional
      or
    • [1,1] = mandatory
  • Every Custom BO node has one Alternative Key typed by UUID automagically
  • You can define your own Alternative Key with the annotation [AlternativeKey] for any node.
  • You can define multiple Alternative Keys, but only one with the same type.
  • SAP BO may have none, one or many Alternative Keys per node.
    Use the keyword "using" to choose the right one.
  • If there is a UUID-typed Alternative Key at the target node the keyword can be omitted
• Keyword "valuation"
  • You compare values of the target node with constants or values from the source node.
    Such a comparison may fit for none, one or many node instances.
    Therefore this kind of association can have the multiplicity
    • [0,1] = optional, one hit
    • [1,1] = mandatory, one hit
    • [0,n] = optional, none, one, or many hits
    • [1,n] = mandatory, none, one, or many hits
  • On the left hand side of the comparison only elements from the target node are allowed.
  • On the right hand side of the comparison either
    • elements from the source node are allowed
    • constant values are allowed
  • You can combine several comparison (lines) via the '&&' operator
  • The target node must be inside the current Custom BO definition
  • If the target node is the Root node, the association targets another instance of the same Custom BO
  • For any other nodes the association targets a node instance in the same Custom BO instance

So, form your example above I suggest to use your approach:

businessobject MyBO {

  element MyId : ID;

  node ToOtherBONodes [0,n] {

    association ToOtherBO [0,1] to AP.FO.BusinessPartner.Global:Employee;

  }

}

HTH,

    Horst