org.apache.kafka.streams.kstream

Class Branched<K,V>

java.lang.Object

org.apache.kafka.streams.kstream.Branched<K,V>

Type Parameters:

K - type of record key

V - type of record value

public class Branched<K,V>
extends Object

The Branched class is used to define the optional parameters when building branches with BranchedKStream.

Field Summary

Fields

Modifier and Type	Field and Description
protected Consumer<? super KStream<K,V>>	chainConsumer
protected Function<? super KStream<K,V>,? extends KStream<K,V>>	chainFunction
protected String	name

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Branched(Branched<K,V> branched)
protected	Branched(String name, Function<? super KStream<K,V>,? extends KStream<K,V>> chainFunction, Consumer<? super KStream<K,V>> chainConsumer)

Method Summary

Modifier and Type	Method and Description
static <K,V> Branched<K,V>	as(String name) Create an instance of Branched with provided branch name suffix.
static <K,V> Branched<K,V>	withConsumer(Consumer<? super KStream<K,V>> chain, String name) Create an instance of Branched with provided chain consumer and branch name suffix.
static <K,V> Branched<K,V>	withConsumer(Consumer<KStream<K,V>> chain) Create an instance of Branched with provided chain consumer.
static <K,V> Branched<K,V>	withFunction(Function<? super KStream<K,V>,? extends KStream<K,V>> chain) Create an instance of Branched with provided chain function.
static <K,V> Branched<K,V>	withFunction(Function<? super KStream<K,V>,? extends KStream<K,V>> chain, String name) Create an instance of Branched with provided chain function and branch name suffix.
Branched<K,V>	withName(String name) Configure the instance of Branched with a branch name suffix.

Methods inherited from class java.lang.Object

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

Field Detail

name

protected final String name

chainFunction

protected final Function<? super KStream<K,V>,? extends KStream<K,V>> chainFunction

chainConsumer

protected final Consumer<? super KStream<K,V>> chainConsumer

Constructor Detail

Branched

protected Branched(String name,
                   Function<? super KStream<K,V>,? extends KStream<K,V>> chainFunction,
                   Consumer<? super KStream<K,V>> chainConsumer)

Branched

protected Branched(Branched<K,V> branched)

Method Detail

as

public static <K,V> Branched<K,V> as(String name)

Create an instance of Branched with provided branch name suffix.

Type Parameters:

K - key type

V - value type

Parameters:

name - the branch name suffix to be used (see BranchedKStream description for details)

Returns:

a new instance of Branched

withFunction

public static <K,V> Branched<K,V> withFunction(Function<? super KStream<K,V>,? extends KStream<K,V>> chain)

Create an instance of Branched with provided chain function.

Type Parameters:

K - key type

V - value type

Parameters:

chain - A function that will be applied to the branch. If the provided function returns null, its result is ignored, otherwise it is added to the Map returned by BranchedKStream.defaultBranch() or BranchedKStream.noDefaultBranch() (see BranchedKStream description for details).

Returns:

a new instance of Branched

withConsumer

public static <K,V> Branched<K,V> withConsumer(Consumer<KStream<K,V>> chain)

Create an instance of Branched with provided chain consumer.

Type Parameters:

K - key type

V - value type

Parameters:

chain - A consumer to which the branch will be sent. If a consumer is provided, the respective branch will not be added to the resulting Map returned by BranchedKStream.defaultBranch() or BranchedKStream.noDefaultBranch() (see BranchedKStream description for details).

Returns:

a new instance of Branched

withFunction

public static <K,V> Branched<K,V> withFunction(Function<? super KStream<K,V>,? extends KStream<K,V>> chain,
                                               String name)

Create an instance of Branched with provided chain function and branch name suffix.

Type Parameters:

K - key type

V - value type

Parameters:

chain - A function that will be applied to the branch. If the provided function returns null, its result is ignored, otherwise it is added to the Map returned by BranchedKStream.defaultBranch() or BranchedKStream.noDefaultBranch() (see BranchedKStream description for details).

name - the branch name suffix to be used. If null, a default branch name suffix will be generated (see BranchedKStream description for details)

Returns:

a new instance of Branched

withConsumer

public static <K,V> Branched<K,V> withConsumer(Consumer<? super KStream<K,V>> chain,
                                               String name)

Create an instance of Branched with provided chain consumer and branch name suffix.

Type Parameters:

K - key type

V - value type

Parameters:

chain - A consumer to which the branch will be sent. If a non-null consumer is provided, the respective branch will not be added to the resulting Map returned by BranchedKStream.defaultBranch() or BranchedKStream.noDefaultBranch() (see BranchedKStream description for details).

name - the branch name suffix to be used. If null, a default branch name suffix will be generated (see BranchedKStream description for details)

Returns:

a new instance of Branched

withName

public Branched<K,V> withName(String name)

Configure the instance of Branched with a branch name suffix.

Parameters:

name - the branch name suffix to be used. If null a default branch name suffix will be generated (see BranchedKStream description for details)

Returns:

this to facilitate method chaining