Adding a Launch LOB event action

Use the Launch LOB event action to open large object (LOB) data from an object of a visual dashboard.

About this task

LOB data is binary data of any type (for example, PDF files and the content of image files such as .gif or .jpeg files) that can be stored in a database table.

When run, the Launch LOB event action reads LOB values stored in a database table and performs an action associated with the value. The developer must specify the LOB data type in order for the application to launch the appropriate program and display the data.
Note: The Launch LOB event action can be applied to only those objects that are contained in the data template.

To add a Launch LOB event action, perform the following steps:

Procedure

  1. Select the object in the editor window and double-click the event that will trigger the jump from the Events view.
    The [objectname] Behavior window opens.
  2. Click the Add New Action icon.
    The Add New Action window opens.
  3. Select Launch LOB in the actions tree.
    Note: To quickly find the required event action, type the name of the action in the filter text field.
  4. Click Next. A window requesting the parameters for the Launch LOB event action opens.
    1. Select Data from the drop-down list or type the necessary expression.
      Note: The result of the expression must be the name of the column containing LOB data.

      Select Data from the drop-down list or type the necessary expression. The result of the expression must be the name of the column containing LOB data.

    2. Specify the data type by typing the necessary expression.
  5. Click Finish.

    The Add New Action window closes.

  6. From the [objectname] Behavior window, click Apply to apply all actions that you have added for the event.
  7. Click OK to close the [objectname] Behavior window.

Results

You have added a Launch LOB event action.

When the event action defined occurs, query cache in the target component is invalidated and the valid results will display in the component the next time it is refreshed.

When the visual dashboard runs you can open the LOB data by applying the specified event to the object that handles this action. In QMF for Workstation, the data opens in the associated system application. In QMF for WebSphere®, the data opens in the web browser.