Adding a subflow
In a message flow, you can include
an embedded message flow, also known as a subflow. For
example, you might define a subflow that provides error handling,
and include it in a message flow connected to a failure terminal on
a node that can generate an error in some situations.
Before you start:To complete this task, you must have created your subflow
in either a .subflow file, or in a .msgflow file.
You must also have created a message flow in which to insert the subflow.
For more information about creating a .subflow file,
see Creating a subflow. For more information about
creating a .msgflow file, see Creating a message flow. For more information
about the differences between subflows defined in .subflow files
and subflows defined in .msgflow files, see Subflows.
You can embed subflows into your
message flow if either of the following statements is true:
- The flow that you want to embed is defined in the same application, library, or integration project.
- The flow is defined in a different library,
and you have specified the dependency of the current application,
library, or integration project on that other library.
If you want to embed subflows
into other subflows, be aware of the following information:
- You can embed subflows that are defined in .subflow files
into subflows that are defined in .subflow files
and .msgflow files.
- You can embed subflows that are defined in .msgflow files
into subflows that are defined only in .msgflow files.
To add a subflow to a message flow or subflow, complete the following steps:
- Open the message flow or subflow in
which you want to embed the subflow.
- To add a subflow, drag the message flow or subflow that you want to add from
the Application
Development view to the editor. Alternatively,
click , then select the flow that you want to add from the
list. The embedded subflow is shown in the Message
Flow editor as a single node with the terminals that represent the Input and Output nodes
that you have included in the subflow.
- Connect the subflow node to one or more of
the nodes in the main message flow or
subflow. For more details, see Connecting message flow nodes.
- To add and connect further subflow nodes, repeat steps 2 and 3.
- To work with the contents of the subflow, double-click
the subflow icon. The subflow opens in the Message
Flow editor.
You can
package subflows that are defined in .msgflow files
as user-defined nodes so that you can use them in message flows and
subflows; for more information, see Using a subflow as a user-defined node.
Last updated Friday, 21 July 2017