org.sormula.active.operation
Class SelectAvg<R extends ActiveRecord<R>,T>

java.lang.Object
  org.sormula.active.operation.ActiveOperation<R,T>
      org.sormula.active.operation.SelectAvg<R,T>

Type Parameters:

R - record type

T - aggregate type

public class SelectAvg<R extends ActiveRecord<R>,T>
extends ActiveOperation<R,T>

Delegate for selectAvg methods in Table.

Since:

1.7 and 2.1

Author:

Jeff Miller

Constructor Summary

SelectAvg(ActiveTable<R> activeTable, java.lang.String expression)

SelectAvg(ActiveTable<R> activeTable, java.lang.String expression, java.lang.String whereConditionName, java.lang.Object... parameters)

Method Summary

T	operate() Invoked by ActiveOperation.execute() to perform the operation.

Methods inherited from class org.sormula.active.operation.ActiveOperation

attach, attach, close, execute, getOperationDatabase, getTable, isLocalTransaction

Methods inherited from class java.lang.Object

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

Constructor Detail

SelectAvg

public SelectAvg(ActiveTable<R> activeTable,
                 java.lang.String expression)

SelectAvg

public SelectAvg(ActiveTable<R> activeTable,
                 java.lang.String expression,
                 java.lang.String whereConditionName,
                 java.lang.Object... parameters)

Method Detail

operate

public T operate()
          throws java.lang.Exception

Description copied from class: ActiveOperation

Invoked by ActiveOperation.execute() to perform the operation. Subclasses must implement.

Specified by:

operate in class ActiveOperation<R extends ActiveRecord<R>,T>

Returns:

result of operation (Integer, List, etc.)

Throws:

java.lang.Exception