com.google.cloud.dataflow.sdk.transforms

Class Min.MinFn<T>

java.lang.Object

com.google.cloud.dataflow.sdk.transforms.Combine.CombineFn<V,Combine.Holder<V>,V>

com.google.cloud.dataflow.sdk.transforms.Combine.BinaryCombineFn<T>

com.google.cloud.dataflow.sdk.transforms.Min.MinFn<T>

Type Parameters:

T - the type of the values being compared

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

Min.MinDoubleFn, Min.MinIntegerFn, Min.MinLongFn

Enclosing class:

Min

public static class Min.MinFn<T>
extends Combine.BinaryCombineFn<T>

A CombineFn that computes the maximum of a collection of elements of type T using an arbitrary Comparator, useful as an argument to Combine.globally(com.google.cloud.dataflow.sdk.transforms.SerializableFunction<java.lang.Iterable<V>, V>) or Combine.perKey(com.google.cloud.dataflow.sdk.transforms.SerializableFunction<java.lang.Iterable<V>, V>).

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
T	apply(T left, T right) Applies the binary operation to the two operands, returning the result.
T	identity() Returns the value that should be used for the combine of the empty set.
static <T extends Comparable<? super T>> Min.MinFn<T>	naturalOrder()
static <T extends Comparable<? super T>> Min.MinFn<T>	naturalOrder(T identity)
static <T,ComparatorT extends Comparator<? super T> & Serializable> Min.MinFn<T>	of(ComparatorT comparator)
static <T,ComparatorT extends Comparator<? super T> & Serializable> Min.MinFn<T>	of(T identity, ComparatorT comparator)

Methods inherited from class com.google.cloud.dataflow.sdk.transforms.Combine.BinaryCombineFn

addInput, createAccumulator, extractOutput, getAccumulatorCoder, getDefaultOutputCoder, mergeAccumulators

Methods inherited from class com.google.cloud.dataflow.sdk.transforms.Combine.CombineFn

apply, asKeyedFn, getOutputType

Methods inherited from class java.lang.Object

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

Method Detail

of

public static <T,ComparatorT extends Comparator<? super T> & Serializable> Min.MinFn<T> of(T identity,
                                                                                           ComparatorT comparator)

of

public static <T,ComparatorT extends Comparator<? super T> & Serializable> Min.MinFn<T> of(ComparatorT comparator)

naturalOrder

public static <T extends Comparable<? super T>> Min.MinFn<T> naturalOrder(T identity)

naturalOrder

public static <T extends Comparable<? super T>> Min.MinFn<T> naturalOrder()

identity

public T identity()

Description copied from class: Combine.BinaryCombineFn

Returns the value that should be used for the combine of the empty set.

Overrides:

identity in class Combine.BinaryCombineFn<T>

apply

public T apply(T left,
               T right)

Description copied from class: Combine.BinaryCombineFn

Applies the binary operation to the two operands, returning the result.

Specified by:

apply in class Combine.BinaryCombineFn<T>