Nesting
The graphical tool supports Nesting of activities and processes however there are some rules for nesting which are described below.
- An Activity can be nested in another Activity or Process
- A parent Activity can be nested to other parent or child Activities
- A process cannot be nested in an Activity
- A process can be nested in another Process
- A Process or Activity with connections cannot be nested unless connections are removed first
- Tool supports N level of Nesting fulfilling above criteria
How to Nest
To nest one element to another follow these steps:
- Select an Activity or Process by left click on it, it’s border will turn to blue this indicates as a source element which is to be nested
- Now right click on other Activity or Process and a menu will be shown, click on Nest Under option and the selected item will be nested inside this item
Un-Nesting
When an Activity or Process is nested it can also be un-nested easily, just right click on the item you want to un-nest and select Un-nest from the menu and the item will be un-nested from its parent. If the item has some connection then remove those connections in certain cases in order to complete the un-nest operation.
Sub-processes
We’ve enhanced the DCR semantics and is now supporting two different types of “grouping of events”:
- Nesting – the “classical” way of grouping events together
- Single instance sub-process – a new way of “grouping” events which we believe is more intuitively. Once the grouping is Accepting, i.e. no pending events (blue exclamation marks) exists, the sub-process is considered done.
The main difference between nesting and sub-process is that in nesting all events must be executed before you can proceed, while for sub-processes the process must be in accepting mode to continue. This is illustrated in this example.
You choose between Nesting and Subprocess using the Options-->Advanced and then selecting the Grouping Type.
As of Release 6.0 of the DCR Portal the default nesting type is changed from Nesting to Subprocess.
