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VPM Enterprise 6.0 - Top 10 New Features

VPME Top 10 New Features More Than Meets The Eye
Obviously, extensive support for n-tier, client-server development is the major new feature in VPM Enterprise 6.0. However, there are a lot of new features under the hood that you will appreciate. We asked our development staff to put together a list of the top 10 new features in VPME. Here's their list:
  1. More OOP-Like: VPME applications are more OOP-like with code now in classes instead of  programs and forms.

  2. More Stable: VPME and VPME applications are now more stable because they no longer use global memory variables. Certain errors cause VFP to clear memory, including memory variables. This caused VPM applications to “hang” because global memory variables were used to hold various object references.

  3. Referencing the Reference Record: The field validation routine and F2 Picklist form no longer close the lookup table/view that they open with the “f2reftable” alias. The table/view is now closed when the form where the FK is edited is closed. What this means is that you can reference in that form the “f2reftable” record found by the validation routine or selected on the F2 Picklist form.

  4. Primary Key Generator: VPME has a new PK generator that stores the last generated number in a new table instead of in the data dictionary table. Storing the last generated number in the data dictionary caused problems when updating an application in which the data dictionary tables needed to be updated.

  5. Data Functionality Moved Out of Forms: Data handling functionality has been moved out of the form classes and into methods of the application object. This makes it easy to manipulate data outside of forms.

  6. Improved RI Performance: The VPM RI routine has been modified to improve its performance, especially on large tables. This was achieved by changing the way in which related records are found, including the use of parameterized views.

  7. Find Records Form: There is a new Find form that works with view-based forms to let the user select the records that will populate the view cursor. The label captions that appear on the Find form are determined by values in a form property if they should differ from those in the data dictionary.

  8. Easier Access to System Tables: VPME applications now open system tables (Data Dictionary, Messaging, and  Security) in a private data session and stay open as long as the application is open. This means that system data can more readily be accessed and should speed up normal application operations. Methods have been created to easily retrieve information from these system tables.

  9. Transaction Rollback: Even though the PostSave method is run after the Save is performed, it can now cause the Save to be rolled-back. This is accomplished by wrapping the Save and PostSave functionality in a single transaction. The same is also true of the Delete/PostDelete functionality.

  10. Separate Tables: In the RI setup for a FK in the Data Builder, a separate table or view can now be specified for RI (the parent table/view), validation, and F2 Picklist.

 
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