MERGE-ROW-CHANGES( ) method

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

Return type:

LOGICAL

Applies to:

Buffer object handle (of the source ProDataSet)

The syntax for invoking this method follows:

 

Syntax 

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

change-handle

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

original-handle

A handle to the buffer of the original (target) ProDataSet temp-table to merge with the changed row from the source ProDataSet.

The AVM 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 the AVM always merges the row.

When TRUE, the AVM 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 the AVM can use to find the 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, the AVM creates a new row using the row from the after-image table. When FALSE, the AVM merges only an after-image table row that contains 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. The AVM 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.