Package io.helidon.common.reactive.valve

Class Valves

java.lang.Object

io.helidon.common.reactive.valve.Valves

public class Valves
extends Object

An utility class for Valve interface.

Method Summary

Modifier and Type	Method	Description
static <T> Valve<T>	empty()	Returns an empty Valve - instance, which report complete as soon as handler is registered.
static <T> Valve<T>	from(Flow.Publisher<T> publisher)	Creates a Valve instance from provided Flow.Publisher.
static Valve<ByteBuffer>	from(InputStream stream, int bufferCapacity)	Creates a ByteBuffer based Valve instance from the provided InputStream.
static Valve<ByteBuffer>	from(InputStream stream, int bufferCapacity, ExecutorService executorService)	Creates a ByteBuffer based Valve instance from the provided InputStream.
static <T> Valve<T>	from(Iterable<T> iterable)	Creates a Valve instance from the provided Iterable.
static <T> Valve<T>	from(T... t)	Creates a Valve instance from provided array.

Methods inherited from class java.lang.Object

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

Method Detail

from

@SafeVarargs
public static <T> Valve<T> from(T... t)

Creates a Valve instance from provided array.

If t array parameter is null then returns an empty Valve.

Type Parameters:

T - a type of the array items

Parameters:

t - an array to provide as a Valve

Returns:

the new instance

from

public static <T> Valve<T> from(Iterable<T> iterable)

Creates a Valve instance from the provided Iterable.

If iterable parameter is null then returns an empty Valve.

Type Parameters:

T - a type of iterable items

Parameters:

iterable - an iterable to provide as a Valve

Returns:

the new instance

from

public static Valve<ByteBuffer> from(InputStream stream,
                                     int bufferCapacity)

Creates a ByteBuffer based Valve instance from the provided InputStream. Each byte buffer will have the provided capacity.

Each byte buffer uses a newly allocated memory and as such no pooling is performed.

Parameters:

stream - the input stream to create the Valve from

bufferCapacity - the capacity of each buffer of bytes

Returns:

the new instance

from

public static Valve<ByteBuffer> from(InputStream stream,
                                     int bufferCapacity,
                                     ExecutorService executorService)

Creates a ByteBuffer based Valve instance from the provided InputStream. Each byte buffer will have the provided capacity.

Each byte buffer uses a newly allocated memory and as such no pooling is performed.

Parameters:

stream - the input stream to create the Valve from

bufferCapacity - the capacity of each buffer of bytes

executorService - the executor service to use for an execution of the InputStream.read() (and its overloads) operations that are blocking by its nature.

Returns:

the new instance

from

public static <T> Valve<T> from(Flow.Publisher<T> publisher)

Creates a Valve instance from provided Flow.Publisher.

If publisher parameter is null then returns an empty Valve.

Type Parameters:

T - a type of published items

Parameters:

publisher - a publisher to provide as a Valve

Returns:

the new instance

empty

public static <T> Valve<T> empty()

Returns an empty Valve - instance, which report complete as soon as handler is registered.

For performance reason, this particular Valve accepts any amount of handlers.

Type Parameters:

T - type of the item (which is not there :-) )

Returns:

singleton instance