Package ch.tocco.nice2.persist.core.api.exec.tasks2

Class AggregateTasks

java.lang.Object

ch.tocco.nice2.persist.core.api.exec.tasks2.AggregateTasks

public final class AggregateTasks
extends Object

Collection of the 3 standard aggregation functions: avg, count and sum. The tasks work with either EntityList or Iterable<Entity>.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	AggregateTasks.AggregateTask<N extends Number>
static class	AggregateTasks.Avg	Uses AggregateTasks.Sum and AggregateTasks.Count to compute the average.
static class	AggregateTasks.Count	Returns the size of the given entity list.
static class	AggregateTasks.InvalidFunctionArguments
static class	AggregateTasks.SimpleSum	Uses a given field name to obtain the value of that field of each entity in the list to compute the sum.
static class	AggregateTasks.Sum	Calculates the sum of the values returned when resolving the given path against each entity of the entity list.

Method Summary

Methods inherited from class java.lang.Object

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