TypeInformation (javadoc 3.0.0-M5 API)

Type Parameters:

T - The generic type

All Superinterfaces:

AnnotationMetadataProvider, AnnotationSource, java.lang.reflect.Type, TypeVariableResolver

All Known Subinterfaces:

Argument<T>, ArgumentValue<V>, MutableArgumentValue<V>, ReturnType<T>

All Known Implementing Classes:

ArgumentBeanType, DefaultArgument, GenericArgument
```
public interface TypeInformation<T>
extends TypeVariableResolver, AnnotationMetadataProvider, java.lang.reflect.Type
```
Provides information about a type at runtime.

Since:

2.4.0

Author:

graemerocher

Field Summary
- Fields inherited from interface io.micronaut.core.annotation.AnnotationSource
  EMPTY

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`default java.lang.reflect.ParameterizedType`	`asParameterizedType()` Represent this argument as a `ParameterizedType`.
`default java.lang.String`	`getSimpleName()` Obtains the type's simple name.
`java.lang.Class<T>`	`getType()`
`default java.lang.String`	`getTypeName()`
`default java.lang.String`	`getTypeString(boolean simple)` Returns the string representation of the argument type, including generics.
`default java.lang.Class<?>`	`getWrapperType()` If the type is primitive returns the wrapper type, otherwise returns the actual type.
`default boolean`	`hasTypeVariables()`
`default boolean`	`isArray()`
`default boolean`	`isAsync()`
`default boolean`	`isAsyncOrReactive()`
`default boolean`	`isCompletable()`
`default boolean`	`isContainerType()`
`default boolean`	`isOptional()`
`default boolean`	`isPrimitive()`
`default boolean`	`isProvider()`
`default boolean`	`isReactive()`
`default boolean`	`isSpecifiedSingle()`
`default boolean`	`isVoid()` Returns whether the return type is logically void.
`default boolean`	`isWrapperType()` Returns whether this type is a wrapper type that wraps the actual type such as a Optional or a Response wrapper.

Methods inherited from interface io.micronaut.core.type.TypeVariableResolver
getFirstTypeVariable, getTypeParameters, getTypeVariable, getTypeVariables

Methods inherited from interface io.micronaut.core.annotation.AnnotationMetadataProvider
findAnnotation, findAnnotation, findDeclaredAnnotation, findDeclaredAnnotation, getAnnotationMetadata, isAnnotationPresent, isDeclaredAnnotationPresent, synthesize, synthesizeAll, synthesizeAnnotationsByType, synthesizeDeclared, synthesizeDeclared, synthesizeDeclaredAnnotationsByType

Methods inherited from interface io.micronaut.core.annotation.AnnotationSource
getAnnotation, getAnnotation, getDeclaredAnnotation, getDeclaredAnnotation, isAnnotationPresent, isDeclaredAnnotationPresent, synthesize, synthesizeDeclared

- Method Detail
  - getType
```
@NonNull
java.lang.Class<T> getType()
```
    Returns:
    
    The type
  - isPrimitive
```
default boolean isPrimitive()
```
    Returns:
    
    Is the type primitive.
    
    Since:
    
    3.0.0
  - getWrapperType
```
default java.lang.Class<?> getWrapperType()
```
    If the type is primitive returns the wrapper type, otherwise returns the actual type.
    
    Returns:
    
    The wrapper type if primitive
  - getTypeName
```
@NonNull
default java.lang.String getTypeName()
```
    Specified by:
    
    getTypeName in interface java.lang.reflect.Type
  - isReactive
```
default boolean isReactive()
```
    Returns:
    
    Is the return type reactive.
    
    Since:
    
    2.0.0
  - isWrapperType
```
default boolean isWrapperType()
```
    Returns whether this type is a wrapper type that wraps the actual type such as a Optional or a Response wrapper.
    
    Returns:
    
    True if it is a wrapper type.
    
    Since:
    
    2.4.0
  - isCompletable
```
default boolean isCompletable()
```
    Returns:
    
    Is the return the return type a reactive completable type.
    
    Since:
    
    2.0.0
  - isAsync
```
default boolean isAsync()
```
    Returns:
    
    Is the return type asynchronous.
    
    Since:
    
    2.0.0
  - isAsyncOrReactive
```
default boolean isAsyncOrReactive()
```
    Returns:
    
    Is the return type either async or reactive.
    
    Since:
    
    2.0.0
  - isContainerType
```
default boolean isContainerType()
```
    Returns:
    
    Whether this is a container type.
  - hasTypeVariables
```
default boolean hasTypeVariables()
```
    Returns:
    
    Whether the argument has any type variables
  - getTypeString
```
default java.lang.String getTypeString(boolean simple)
```
    Returns the string representation of the argument type, including generics.
    
    Parameters:
    
    simple - If true, output the simple name of types
    
    Returns:
    
    The type string representation
  - isVoid
```
default boolean isVoid()
```
    Returns whether the return type is logically void. This includes reactive times that emit nothing (such as io.micronaut.core.async.subscriber.Completable) and asynchronous types that emit Void.
    
    Returns:
    
    Is the return type logically void.
    
    Since:
    
    2.0.0
  - isOptional
```
default boolean isOptional()
```
    Returns:
    
    Is the return type Optional.
    
    Since:
    
    2.0.1
  - isSpecifiedSingle
```
default boolean isSpecifiedSingle()
```
    Returns:
    
    Has the return type been specified to emit a single result with SingleResult.
    
    Since:
    
    2.0
  - asParameterizedType
```
@NonNull
default java.lang.reflect.ParameterizedType asParameterizedType()
```
    Represent this argument as a ParameterizedType.
    
    Returns:
    
    The ParameterizedType
    
    Since:
    
    2.0.0
  - isArray
```
default boolean isArray()
```
    Returns:
    
    Is the type an array.
    
    Since:
    
    2.4.0
  - getSimpleName
```
@NonNull
default java.lang.String getSimpleName()
```
    Obtains the type's simple name.
    
    Returns:
    
    The simple name
    
    Since:
    
    3.0.0
  - isProvider
```
default boolean isProvider()
```

Interface TypeInformation<T>

Field Summary

Fields inherited from interface io.micronaut.core.annotation.AnnotationSource

Method Summary

Methods inherited from interface io.micronaut.core.type.TypeVariableResolver

Methods inherited from interface io.micronaut.core.annotation.AnnotationMetadataProvider

Methods inherited from interface io.micronaut.core.annotation.AnnotationSource

Method Detail

getType

isPrimitive

getWrapperType

getTypeName

isReactive

isWrapperType

isCompletable

isAsync

isAsyncOrReactive

isContainerType

hasTypeVariables

getTypeString

isVoid

isOptional

isSpecifiedSingle

asParameterizedType

isArray

getSimpleName

isProvider