程序包 cn.taketoday.core

类 ReactiveTypeDescriptor

java.lang.Object

cn.taketoday.core.ReactiveTypeDescriptor

public final class ReactiveTypeDescriptor
extends Object

Describes the semantics of a reactive type including boolean checks for isMultiValue(), isNoValue(), and supportsEmpty().

从以下版本开始:

4.0

作者:

Rossen Stoyanchev, Harry Yang

字段概要

字段

修饰符和类型	字段	说明
private final boolean	deferred
private final Supplier<?>	emptySupplier
private final boolean	multiValue
private final boolean	noValue
private final Class<?>	reactiveType

构造器概要

构造器

限定符	构造器	说明
private	ReactiveTypeDescriptor(Class<?> reactiveType, boolean multiValue, boolean noValue, Supplier<?> emptySupplier)
private	ReactiveTypeDescriptor(Class<?> reactiveType, boolean multiValue, boolean noValue, Supplier<?> emptySupplier, boolean deferred)

方法概要

修饰符和类型	方法	说明
boolean	equals(Object other)
Object	getEmptyValue()	Return an empty-value instance for the underlying reactive or async type.
Class<?>	getReactiveType()	Return the reactive type for this descriptor.
int	hashCode()
boolean	isDeferred()	Whether the underlying operation is deferred and needs to be started explicitly, e.g. via subscribing (or similar), or whether it is triggered without the consumer having any control.
boolean	isMultiValue()	Return true if the reactive type can produce more than 1 value can be produced and is therefore a good fit to adapt to Flux.
boolean	isNoValue()	Return true if the reactive type does not produce any values and only provides completion and error signals.
static ReactiveTypeDescriptor	multiValue(Class<?> type, Supplier<?> emptySupplier)	Descriptor for a reactive type that can produce 0..N values.
static ReactiveTypeDescriptor	nonDeferredAsyncValue(Class<?> type, Supplier<?> emptySupplier)	The same as singleOptionalValue(Class, Supplier) but for a non-deferred, async type such as CompletableFuture.
static ReactiveTypeDescriptor	noValue(Class<?> type, Supplier<?> emptySupplier)	Descriptor for a reactive type that does not produce any values.
static ReactiveTypeDescriptor	singleOptionalValue(Class<?> type, Supplier<?> emptySupplier)	Descriptor for a reactive type that can produce 0..1 values.
static ReactiveTypeDescriptor	singleRequiredValue(Class<?> type)	Descriptor for a reactive type that must produce 1 value to complete.
boolean	supportsEmpty()	Return true if the reactive type can complete with no values.

从类继承的方法 java.lang.Object

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

字段详细资料

reactiveType

private final Class<?> reactiveType

multiValue

private final boolean multiValue

noValue

private final boolean noValue

emptySupplier

@Nullable
private final Supplier<?> emptySupplier

deferred

private final boolean deferred

构造器详细资料

ReactiveTypeDescriptor

private ReactiveTypeDescriptor(Class<?> reactiveType,
 boolean multiValue,
 boolean noValue,
 @Nullable
 Supplier<?> emptySupplier)

ReactiveTypeDescriptor

private ReactiveTypeDescriptor(Class<?> reactiveType,
 boolean multiValue,
 boolean noValue,
 @Nullable
 Supplier<?> emptySupplier,
 boolean deferred)

方法详细资料

getReactiveType

public Class<?> getReactiveType()

Return the reactive type for this descriptor.

isMultiValue

public boolean isMultiValue()

Return true if the reactive type can produce more than 1 value can be produced and is therefore a good fit to adapt to Flux. A false return value implies the reactive type can produce 1 value at most and is therefore a good fit to adapt to Mono.

isNoValue

public boolean isNoValue()

Return true if the reactive type does not produce any values and only provides completion and error signals.

supportsEmpty

public boolean supportsEmpty()

Return true if the reactive type can complete with no values.

getEmptyValue

public Object getEmptyValue()

Return an empty-value instance for the underlying reactive or async type.

Use of this type implies supportsEmpty() is true.

isDeferred

public boolean isDeferred()

Whether the underlying operation is deferred and needs to be started explicitly, e.g. via subscribing (or similar), or whether it is triggered without the consumer having any control.

equals

public boolean equals(@Nullable
 Object other)

覆盖:

equals 在类中 Object

hashCode

public int hashCode()

覆盖:

hashCode 在类中 Object

multiValue

public static ReactiveTypeDescriptor multiValue(Class<?> type,
 Supplier<?> emptySupplier)

Descriptor for a reactive type that can produce 0..N values.

参数:

type - the reactive type

emptySupplier - a supplier of an empty-value instance of the reactive type

singleOptionalValue

public static ReactiveTypeDescriptor singleOptionalValue(Class<?> type,
 Supplier<?> emptySupplier)

Descriptor for a reactive type that can produce 0..1 values.

参数:

type - the reactive type

emptySupplier - a supplier of an empty-value instance of the reactive type

singleRequiredValue

public static ReactiveTypeDescriptor singleRequiredValue(Class<?> type)

Descriptor for a reactive type that must produce 1 value to complete.

参数:

type - the reactive type

noValue

public static ReactiveTypeDescriptor noValue(Class<?> type,
 Supplier<?> emptySupplier)

Descriptor for a reactive type that does not produce any values.

参数:

type - the reactive type

emptySupplier - a supplier of an empty-value instance of the reactive type

nonDeferredAsyncValue

public static ReactiveTypeDescriptor nonDeferredAsyncValue(Class<?> type,
 Supplier<?> emptySupplier)

The same as singleOptionalValue(Class, Supplier) but for a non-deferred, async type such as CompletableFuture.

参数:

type - the reactive type

emptySupplier - a supplier of an empty-value instance of the reactive type