cascading.nested.core.aggregate

Class AverageDoubleNestedAggregate<Node>

java.lang.Object

cascading.nested.core.aggregate.BaseNumberNestedAggregate<Node,java.lang.Double,BaseNumberNestedAggregate.BaseContext<java.lang.Double,Node>>

cascading.nested.core.aggregate.AverageDoubleNestedAggregate<Node>

Type Parameters:

Node -

All Implemented Interfaces:

NestedAggregate<Node,BaseNumberNestedAggregate.BaseContext<java.lang.Double,Node>>, java.io.Serializable

public class AverageDoubleNestedAggregate<Node>
extends BaseNumberNestedAggregate<Node,java.lang.Double,BaseNumberNestedAggregate.BaseContext<java.lang.Double,Node>>

Class AverageDoubleNestedAggregate is a @{link cascading.nested.core.NestedAggregate} implementation for averaging the elements collected from the parent container object.

Optionally null values can be ignored or counted against the average.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AverageDoubleNestedAggregate.Context<Node>
static class	AverageDoubleNestedAggregate.Include

Nested classes/interfaces inherited from class cascading.nested.core.aggregate.BaseNumberNestedAggregate

BaseNumberNestedAggregate.BaseContext<Type,Node>

Field Summary

Fields

Modifier and Type	Field and Description
protected AverageDoubleNestedAggregate.Include	include

Fields inherited from class cascading.nested.core.aggregate.BaseNumberNestedAggregate

aggregateType, fieldDeclaration

Constructor Summary

Constructors

Constructor and Description
AverageDoubleNestedAggregate(cascading.tuple.Fields declaredFields)
AverageDoubleNestedAggregate(cascading.tuple.Fields declaredFields, AverageDoubleNestedAggregate.Include include)

Method Summary

Modifier and Type	Method and Description
AverageDoubleNestedAggregate.Context<Node>	createContext(cascading.tuple.type.CoercibleType<Node> nestedCoercibleType)
protected boolean	discardNullValues()

Methods inherited from class cascading.nested.core.aggregate.BaseNumberNestedAggregate

aggregate, complete, getFieldDeclaration, resetContext, returnNullForEmpty

Methods inherited from class java.lang.Object

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

Field Detail

include

protected final AverageDoubleNestedAggregate.Include include

Constructor Detail

AverageDoubleNestedAggregate

@ConstructorProperties(value="declaredFields")
public AverageDoubleNestedAggregate(cascading.tuple.Fields declaredFields)

Parameters:

declaredFields -

AverageDoubleNestedAggregate

@ConstructorProperties(value={"declaredFields","include"})
public AverageDoubleNestedAggregate(cascading.tuple.Fields declaredFields,
                                                                                               AverageDoubleNestedAggregate.Include include)

Method Detail

discardNullValues

protected boolean discardNullValues()

Overrides:

discardNullValues in class BaseNumberNestedAggregate<Node,java.lang.Double,BaseNumberNestedAggregate.BaseContext<java.lang.Double,Node>>

createContext

public AverageDoubleNestedAggregate.Context<Node> createContext(cascading.tuple.type.CoercibleType<Node> nestedCoercibleType)

Returns:

a new function specific context object