org.apache.openjpa.kernel.exps
Class Avg

java.lang.Object
  org.apache.openjpa.kernel.exps.Val
      org.apache.openjpa.kernel.exps.AggregateVal
          org.apache.openjpa.kernel.exps.Avg

All Implemented Interfaces:

Serializable, Value

 class Avg
extends AggregateVal

Average values.

Author:

Abe White

Constructor Summary

Avg(Val val)
Constructor.

Method Summary

protected Class	getType(Class c) Return the type of this aggregate based on the value type.
protected Object	operate(Collection os, Class c) Aggregate the given values.

Methods inherited from class org.apache.openjpa.kernel.exps.AggregateVal

acceptVisit, eval, eval, getType, isAggregate, setImplicitType

Methods inherited from class org.apache.openjpa.kernel.exps.Val

evaluate, evaluate, getAlias, getMetaData, getName, getPath, getSelectAs, isVariable, isXPath, setAlias, setMetaData

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Avg

public Avg(Val val)

Constructor. Provide the value to average.

Method Detail

getType

protected Class getType(Class c)

Description copied from class: AggregateVal

Return the type of this aggregate based on the value type.

Specified by:

getType in class AggregateVal

operate

protected Object operate(Collection os,
                         Class c)

Description copied from class: AggregateVal

Aggregate the given values.

Specified by:

operate in class AggregateVal