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Summary

 
Important Observations

• You can create instance lists that contain more than one type of object. You do this by defining relationships between business objects. The relationships can either be peer-to-peer or parent-child.
• In situations where you want to completely fill the business object instance list programmatically, the filter has no meaningful interaction with the end-user and can be hidden from view.
• A relationship handler is an RDML function that is called to dynamically expand the relationship between a parent and child object. By doing this you can improve filter performance by only adding root or parent objects to the instance list initially.
• The Framework instance list can display up to 10 alphanumeric and/or 10 numeric additional columns in an instance list.

 
Tips & Techniques

• The Advanced section of the Programming Techniques sample application has examples of advanced instance lists.
• LANSA supplies a sample relationship handler to copy from when creating your relationships.  The source is stored in function DFREL01 in the process DF_PROC.

 
What I Should Know

• How to create a parent-child relationship between business object
• How to create a hidden filter
• How to write a relationship handler
• How to add additional columns to the instance list

 
 
 
 
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