HP 3000 Manuals

HP ALLBASE/4GL Developer Self-Paced Training Guide

Generating Items 

Sometimes your application may not proceed correctly even though you have
correctly defined all the items.  The most probable cause is that you
haven't generated an item that requires generation.

To generate a single item: 

   1.  Go to the screen where you defined the item.

   2.  Call up the item.

   3.  Press the  Generate  function key.

The Generate menu allows you to generate groups of items in your
application.  Select the Generate option on the main menu to access this
menu.


          Generate Menu 


NOTE  There is no need for you to actually do anything here, although you
      won't cause any damage if you do test the system.


The generate menu allows you to generate all the defined items within a
particular group, or all the items within your application.  If you press
Return or the  Activate Item  function key, all the items of the selected
type will be generated.

When the generation process commences, a number of messages are
displayed.  If necessary, the generate program is called.  A message then
advises you which type of items will be generated, and the generation for
each item commences.

If each item generates without error, HP ALLBASE/4GL displays a
confirmation message.  However, if an error is encountered, a message
appears detailing the errors.  This display remains on the screen for
about 30 seconds.  Generation of the next item then commences.  Generate
will report up to 20 errors.  If more than 20 errors are detected, the
generation continues, but no more errors are reported.


NOTE  When you call generate, HP ALLBASE/4GL creates a file to log all
      generate errors.  The file defaults to a temporary file called
      HPTGNERR in your login group and account.  Each time an error is
      encountered by generate, the name of the item and the errors are
      listed to this file.  This means that you can set a generate all 
      going and then leave your terminal.  When you return you can look
      at the file for any errors.


The usual reason for generating a group of items is to update the items
to reflect a change in the definition of an item which is resolved during
a generate.  For example, if you modify the length of a field
specification, the change would only be reflected in the screens
referring to this specification after you generate the screens again.

MPE/iX 5.0 Documentation