Model 3d - Data Objects

Goals of this lesson

Model 3d uses a Data Object to transfer data to the process instance.

Figure 1. Model 3d - Data Objects / IYOPRO-Link

The first activity defines the variables x = 3 and y = 4
In the data object we define x = 5 in the Expression field (see the highlighted area in the figure below)
The Data Association from the data object to the second activity tells the activity to read data, that has been defined in the data object.
Therefore the former x-value gets overwritten.
To test this, we set up the conditions at the exclusive gateways like this:
- Upper Edge: x < y
- Bottom Edge x >= y
After running the simulation, the report will tell you, that x indeed has been overwritten.

Of course you can also write data into a Data Object by inverting the Data Association’s direction.

Figure 2. Simulation Properties of a Data Object (Expression property highlighted)

See below for the run configuration, which we set up to receive the report statistics from below.

Please refer to the section Experiment Results for more information on the report specific data.

The process cycle times and the activity run-rimes (Figure 3 and Figure 4) show us that the variable x indeed is bigger than y
- Also if you take a look at the gateway details (not listed here), you will notice that always the same edge has been followed behind the branching exclusive gateway
Retrospective: x = 3, y = 4
- But at the second activity we assigned x the value from the data object, which is 5
236 process instances have been completed throughout the simulation
The number of completed New x y also equals 236
These numbers tell us that x is always greater than y (which is not really surprising, because we defined it that way)

Figure 3. The report’s process cycle time

Figure 4. The report’s activity run-times