borland Packages Class Hierarchy jbcl.dataset Package Index
java.lang.Object +----borland.jbcl.dataset.AggOperator +----borland.jbcl.dataset.CountAggOperator
Variables Properties Methods
Implements Serializable, Cloneable
The CountAggOperator class is instantiable subclass of the AggOperator and defines an aggregation operation of a count.
Set the aggOperator property of the AggDescriptor object to this class to perform a count calculation 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 void add(borland.jbcl.dataset.ReadRow row, long internalRow, boolean first)
Overrides: borland.jbcl.dataset.AggOperator.add(borland.jbcl.dataset.ReadRow, long, boolean)
public void delete(borland.jbcl.dataset.ReadRow row, long internalRow)
Overrides: borland.jbcl.dataset.AggOperator.delete(borland.jbcl.dataset.ReadRow, long)
public void init(borland.jbcl.dataset.StorageDataSet dataSet, java.lang.String[] groupColumnNames, borland.jbcl.dataset.StorageDataSet aggDataSet, borland.jbcl.dataset.Column resultColumn, borland.jbcl.dataset.Column aggColumn)