org.axiondb.functions
Class AverageFunction
java.lang.Object
org.axiondb.BaseSelectable
org.axiondb.functions.BaseFunction
org.axiondb.functions.AverageFunction
- All Implemented Interfaces:
- Serializable, Function, FunctionFactory, AggregateFunction, ConcreteFunction, Selectable
public class AverageFunction
- extends BaseFunction
- implements AggregateFunction, FunctionFactory
- Version:
- $Revision: 1.3 $ $Date: 2004/09/09 23:47:44 $
- See Also:
- Serialized Form
Methods inherited from class org.axiondb.functions.BaseFunction |
addArgument, getAlias, getArgument, getArgumentCount, getLabel, getName, setAlias, setArgument, setName, setVariableContext, toString |
AverageFunction
public AverageFunction()
makeNewInstance
public ConcreteFunction makeNewInstance()
- Specified by:
makeNewInstance
in interface FunctionFactory
getDataType
public final DataType getDataType()
- Specified by:
getDataType
in interface Selectable
- Specified by:
getDataType
in class BaseFunction
evaluate
public final Object evaluate(RowDecorator row)
throws AxionException
- Specified by:
evaluate
in interface Selectable
- Throws:
AxionException
evaluate
public final Object evaluate(RowDecoratorIterator rows)
throws AxionException
- Specified by:
evaluate
in interface AggregateFunction
- Throws:
AxionException
isValid
public final boolean isValid()
- Specified by:
isValid
in interface ConcreteFunction
- Specified by:
isValid
in class BaseFunction