Tutorial: Calculator

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Step 3: Configure Services to Run in Parallel

Use the Parallel Paths and Service steps to use the Add, Subtract, Multiply, and Divide operations at the same time.

Drag a

Parallel Paths

step from the palette on to the canvas in between the

Assignment

step and

End

steps.

Select the

Parallel Paths

step.

The step properties section appears.

Click the

General

tab and enter

Parallel Operations

in the

Name

field.

Click the

Parallel Paths

tab and perform the following tasks:

Add four paths.

Drag a

Service Step

on to each path. Set the

Service Type

Connection

and the

Connection

Tutorials > Calculator > CalculatorConn

Select the

Add

action for the first path.

Click the

Input Fields

tab, and add the input field

Add

, with type

Field

and value

add_input

Repeat steps 4c and 4d for the three remaining paths.

The following table shows the Action that you need to add to the Service step on each path:

Path	Service Type	Connection	Action	Input Field
Path 0	Connection	Tutorials Calculator CalculatorConn	Add	Add Field add_input
Path 1	Connection	Tutorials Calculator CalculatorConn	Subtract	Subtract Field subtract_input
Path 2	Connection	Tutorials Calculator CalculatorConn	Multiply	Multiply Field multiply_input
Path 3	Connection	Tutorials Calculator CalculatorConn	Divide	Divide Field divide_input