borland Packages Class Hierarchy jbcl.dataset Package Index
java.lang.Object +----borland.jbcl.dataset.AggOperator +----borland.jbcl.dataset.CustomAggOperator
Variables Properties Methods
Implements Serializable, Cloneable
The CustomAggOperator class is an instantiatable subclass of the AggOperator. Extend this class to define a custom aggregation operation, for example, average, standard deviation, a calculation on another aggregate operation, and so on.
To specify a custom aggregate that is based on an aggregate value, write a CalcAggFieldsListener that performs the custom aggregate calculations. In order to invoke the CalcAggFieldsListener, the following conditions must be true
To specify a custom aggreate that is not based on any aggregate values, you can either
public final boolean isUpdatable()This property is used internally by other classes in the JBCL. You should never use this property directly.
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)