Defining Business Process Variables

You can define interface and local variables.

1. Create a service with a business process binding.
2. Select the Business Process tab in the service editor.
3. Expand the Business Process Variables section below the design canvas to display the following variable categories.

   Table 1. Business process variables

   Variable	Description
   Interface	Specifies the parameters that are part of the business process service interface. These include: Input parameters Output parameters Fault parameters
   Invoked services	Specifies the interface parameters for a service operation invoked within a business process. These variables are automatically generated when you add the operation to the business process. You must edit these variables from the invoked service using the service editor.
   Local	Specifies the local, user-defined variables that are visible only within the context for which they were defined. For example, if you create a variable for complex activity in the business process service, this variable is accessible to the complex activity itself and any activities contained within that activity.

4. Define the Interface Variables using the Business Process Variables section on the Business Process page:
   1. Expand Interface Variables to display the business service operations.
   2. Right-click an operation and select New Parameter.
   3. Define the following parameter properties:

   Table 2. Interface variables parameter properties

   Property	Action
   Name	Select the default parameter name and enter a new name.
   Description	(Optional) Describe the parameter.
   Style	Select one of the following data styles: Input Output Fault
   Datatype	Simple Type Select Simple Type. Select a datatype. Complex Type Select Complex Type. Click Browse for the Schema. In the left pane, select the schema you want to use. In the right pane, select the root node of the schema and click OK. Note: If you cannot locate the schema, verify that you imported the schema into your project.

5. (Optional) Edit the Invoked Services Variables from the invoked service using the service editor.
6. (Optional) Define the Local Variables using the Business Process Variables section on the Business Process page:
   1. Right-click Local Variables and select New variable.
   2. Define variable properties.

   Table 3. Local variables properties

   Property	Action
   Name	Select the default variable name and enter a new name.
   Description	(Optional) Describe the parameter.
   Datatype	Simple Type Select Simple Type. Select a data type. (Optional) Type a default value in the Default field. Complex Type Select Complex Type. Click Browse for the Schema. In the left pane, select the schema you want to use. In the right pane, select the root node of the schema and click OK. Note: If you cannot locate the schema, verify that you have imported the schema into your project. Reply-To-Address Select this option to enable the passing of message header information in a business process.

7. Select File > Save from the main menu bar.

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