Configuring a Conditional Branch Processor

The Conditional Branch processor of a function flow determines whether to execute other branches based on the configured conditions.

Function flows created in Data Workroom (DWR) can only be viewed on the FunctionGraph console; editing and deletion must be done within DWR.
The Conditional Branch processor connects 2 to 20 nodes that are not start, stop, or error handling.

Before using flows, learn about Expression Description and Operators.

In the flow orchestration area, configure the Conditional Branch and Edge parameters.

Figure 1 Configuring the Conditional Branch processor
Click to enlarge

Figure 2 Configuring the Edge
Click to enlarge

**Table 1** Conditional Branch processor parameters
Parameter	Description
Input Filter Expression	JSONPath expression used to filter the input information of the node.
Output Filter Expression	JSONPath expression used to filter the output information of the node.

**Table 2** Edge parameters
Parameter	Description
Branch Type	Select Conditional or Default from the drop-down list.
Expression	Required when Branch Type is set to Conditional. This parameter determines whether the current branch meets the execution condition. For example, $.input<2 means the conditional branch runs when the input is less than 2, otherwise the default branch runs.