Class SystemAggregator

java.lang.Object
org.apache.derby.impl.sql.execute.SystemAggregator
All Implemented Interfaces:
Externalizable, Serializable, Formatable, TypedFormat, ExecAggregator
Direct Known Subclasses:
CountAggregator, OrderableAggregator

abstract class SystemAggregator extends Object implements ExecAggregator
Abstract aggregator that is extended by all internal (system) aggregators.