Release 10.1A: OpenEdge Development:
ProDataSets

Advanced Events and Attributes

Chapter 3 "ProDataSets Events" introduced the FILL events you can use to extend the default behavior of a ProDataSet or buffer FILL. This chapter describes more events and attributes. Some of the techniques we’ll show include examples of:

Doing a successive FILL of a ProDataSet, where an initial FILL populates the parent table of a ProDataSet and then later requests fill in more detail for selected top-level rows.
Activating and deactivating Data-Relations and using FILL-MODE to control how much of a ProDataSet is filled at one time.
Refreshing rows that have already been retrieved by re-reading the Data-Source.
Using the OUTPUT APPEND option on a parameter to bring successively more data over.

The chapter contains the following sections:

Query OFF-END Event
Buffer BATCH-SIZE and LAST-BATCH attributes
ProDataSet buffer FIND-FAILED event
SYNCHRONIZE event for a ProDataSet buffer
Successive loading of ProDataSet data
Summary