Information Technology Reference
In-Depth Information
The bpmn2:inputSet and bpmn2:outputSet tags represent the list of variables
that will be expected inside the activity context. This looks redundant, but don't worry:
most of the time, all of this XML code will be generated automatically by the tooling. We,
as developers, just need to know its structure.
The bpmn2:dataInputAssociation and bpmn2:dataOutputAssociation
tags are where the magic happens. In this section, we will map the information from our
process scope to the activity internal variables and vice versa. In this case, the bpm-
n2:dataInputAssociation tag is copying the information from the process vari-
able called reqDescription to the task input called _3_requirementInput .
Note that the information will be copied and not moved. Inside the flow object, we will be
able to modify this information without affecting the process scope information. If we
want to modify or add more information to our process scope variables, we need to create
a bpmn2:dataOutputAssociation tag that will be in charge of copying informa-
tion from inside the activity scope to the process scope. In this case, we are copying the
content of the _3_ActorIdOutput variable in the activity scope to a variable called
developerId in the process scope. This action will override the value of the de-
veloperId variable with the content generated inside the activity object.
When we want to map information for an abstract task (or any other task type), we use the
same XML structures and rules. You can take a look at the complete process and how all
the variables are mapped by looking at the file called sprintManagement-
V1.bpmn2 .
The following diagram shows where the data is generated or moved:
The data inputs are omitted in all the activities and only the necessary information is
copied for each task. At this point, don't worry if you feel a little bit confused by all the
XML elements we have to use in order to define a business process. Most of the times,
these processes are designed using a visual tool. We will cover one of these tools in
Chapter 5 , Creating a Process Project in the KIE Workbench , and it will introduce a step-
by-step tutorial on how we can model this process (all three different versions) in it.
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