borland Packages Class Hierarchy dx.dataset Package
java.lang.Object +----com.borland.dx.dataset.AggOperator +----com.borland.dx.dataset.BoundsAggOperator +----com.borland.dx.dataset.MaxAggOperator
Variables Properties Methods
Implements Serializable, Cloneable
The MaxAggOperator
component is an instantiatable subclass of the AggOperator
and defines an aggregation operation where the maximum value in a DataSet
is identified.
Set the aggOperator
property of the AggDescriptor
object to this class to identify the maximum value in a DataSet
, using the property settings stored in the AggDescriptor
. Attach the AggDescriptor
object to a Column
component's agg
property to access the data that the aggregation uses.
public boolean locate(ReadRow row)Locates the maximum value for the grouping column values specified in
row
.
For example, if the grouping column is region and the max column is sales, calling this method
moves to the highest sales value for a region.