Release 10.1A: OpenEdge Development:
Progress 4GL Reference

MERGE-ROW-CHANGES( ) method

Merges a single changed row from a ProDataSet object loaded with the GET-CHANGES( ) method into the corresponding row in the original ProDataSet temp-table buffer.

Return type: LOGICAL

Applies to: Buffer object handle

Syntax

change-handle:MERGE-ROW-CHANGES( [ original-handle [, copy-all-mode ] ] )

change-handle

A handle to the ProDataSet before-image temp-table buffer for a changed row, or an after-image temp-table buffer for an unchanged row.

original-handle

A handle to the original ProDataSet temp-table buffer to merge with the changed row.

Progress uses original-handle only to match to the original table currently associated with change-handle (specified in the ORIGIN-HANDLE attribute). The current row in this table is ignored.

copy-all-mode

An optional logical expression where TRUE indicates that Progress merge the row in a copy-all mode. When TRUE, Progress merges the after-image table row whether or not it contains changes. In this case, the temp-table in the original ProDataSet object must have a unique primary index that Progress can use to find each corresponding row from the after-image table (since an unchanged row does not have a corresponding row in the before-image table). When a corresponding row is not found in the original ProDataSet object, Progress creates a new row using the row from the after-image table. When FALSE, Progress merges only an after-image table row that contain changes. The default value is FALSE.

If the ERROR attribute or REJECTED attribute for the changed row is TRUE, the MERGE-ROW-CHANGES( ) method backs out the change. Otherwise, this method accepts the change by copying the after-image table row to the corresponding after-image table row in the original ProDataSet temp-table. Progress also sets the BEFORE-ROWID attribute of the row in the after-image table to the Unknown value (?), sets the ROW-STATE of the row in the after-image table to ROW-UNMODIFIED (0), and removes the before-image table row (if it has one).

Note: The after-image table row, that contains the changes to the corresponding after-image table row in the original ProDataSet temp-table, contains changes from the original ProDataSet temp-table as well as any changes made in the associated data source row based on the MERGE-BY-FIELD attribute and PREFER-DATASET attribute settings in effect during the save operation.