Rational Developer for System z

3. Selecting a variable message

The third page of the New Flow wizard, titled Selecting a variable message, allows you to specify a variable message file and a variable message to contain the variables required by Extract actions, Insert actions, and recorded loops in the flow and any variables that you might need to store and process data during the flow.

A variable is a message element of a simple type that is used to store data into or to retrieve data out of during the performance of a flow (see Variable). Each Extract action, Insert action, and recorded loop requires a variable for its operation.

The variables required by Extract actions, Insert actions, and recorded loops must be all be located in a single message and a single message file called the variable message and the variable message file of the flow (see The variable message of a flow).

Note: When you create a flow by recording a new terminal flow, the New Flow Recording wizard similarly prompts you for a variable message file and a variable message for the same purpose (see Part 2: Making the flow recording).

On the third page of the New Flow wizard, to define a variable message file and a variable message:

  1. If you want to use an existing message file and message:
    1. Click Workplace Browse.
    2. The Message Browse window opens.
      1. In the left pane, select a message file.
      2. In the right pane, select the message in that file that you want to use.
      3. Click OK.
  2. If you want to create a new message file and message:
    1. Click Create New.
    2. The Create Message File window opens.
      1. Specify the names that you want to use for the new message file and the new operation:
        1. In the Message file name input field, type the name that you want to use for the new message file, or accept the default name (such as v_new_flow.sfmxsd).
        2. In the Message input field, type the name that you want to use for the new message, or accept the default name (such as v_new_flow).
      2. Click OK.
  3. The names of the message file and message are displayed on the current page of the New Flow wizard.

  4. Click Next to go to the next page or Finish to close the wizard and create the new flow. If you click Finish:
    1. The wizard creates the specified message file and message in the interface definition subproject of the service flow project that you specified.
    2. The wizard opens the new flow in the flow editor.
    3. The wizard closes.


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