Class ReflectionBeanConstructor<T>

java.lang.Object

io.micronaut.reflection.ReflectionBeanConstructor<T>

Type Parameters:

T - The bean type

All Implemented Interfaces:

AnnotationMetadataProvider, AnnotationSource, BeanConstructor<T>, Described

public final class ReflectionBeanConstructor<T>
extends Object
implements BeanConstructor<T>

A BeanConstructor over a Constructor, with the arguments and the annotation metadata a generated constructor would have. A non-static inner class is instantiated as Constructor.newInstance(Object...) instantiates it: the enclosing instance is the first argument.

Since:

5.2.0

Author:

Denis Stepanov

Field Summary

Fields inherited from interface AnnotationSource

EMPTY

Constructor Summary

Constructors

Constructor	Description
ReflectionBeanConstructor(Constructor<T> constructor)	Creates a bean constructor over a constructor.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
AnnotationMetadata	getAnnotationMetadata()	Supplies the metadata.
Argument<?>[]	getArguments()
Constructor<T>	getConstructor()	The constructor this bean constructor instantiates through.
Class<T>	getDeclaringBeanType()	Returns the bean type.
Constructor<T>	getTargetConstructor()	Returns the Constructor this bean constructor stands for: the constructor of BeanConstructor.getDeclaringBeanType() whose parameter types are the raw types of BeanConstructor.getArguments().
int	hashCode()
T	instantiate(@Nullable Object... parameterValues)	Instantiate an instance.
static <T> ReflectionBeanConstructor<T>	of(Constructor<T> constructor)	The bean constructor of a constructor.
String	toString()

Methods inherited from class Object

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

Methods inherited from interface AnnotationMetadataProvider

findAnnotation, findAnnotation, findDeclaredAnnotation, findDeclaredAnnotation, getTargetAnnotationMetadata, isAnnotationPresent, isDeclaredAnnotationPresent, synthesize, synthesizeAll, synthesizeAnnotationsByType, synthesizeDeclared, synthesizeDeclared, synthesizeDeclaredAnnotationsByType

Methods inherited from interface AnnotationSource

getAnnotation, getAnnotation, getDeclaredAnnotation, getDeclaredAnnotation, isAnnotationPresent, isDeclaredAnnotationPresent, synthesize, synthesizeDeclared

Methods inherited from interface BeanConstructor

getDescription, getDescription

Constructor Details

ReflectionBeanConstructor

public ReflectionBeanConstructor(Constructor<T> constructor)

Creates a bean constructor over a constructor.

Parameters:

constructor - The constructor

Method Details

of

public static <T> ReflectionBeanConstructor<T> of(Constructor<T> constructor)

The bean constructor of a constructor.

Type Parameters:

T - The bean type

Parameters:

constructor - The constructor

Returns:

The bean constructor

getConstructor

public Constructor<T> getConstructor()

The constructor this bean constructor instantiates through.

Returns:

The constructor

getDeclaringBeanType

public Class<T> getDeclaringBeanType()

Description copied from interface: BeanConstructor

Returns the bean type.

Specified by:

getDeclaringBeanType in interface BeanConstructor<T>

Returns:

The underlying bean type

getArguments

public Argument<?>[] getArguments()

Specified by:

getArguments in interface BeanConstructor<T>

Returns:

The constructor argument types.

getAnnotationMetadata

public AnnotationMetadata getAnnotationMetadata()

Description copied from interface: AnnotationMetadataProvider

Supplies the metadata. Defaults to AnnotationMetadata.EMPTY_METADATA.

Specified by:

getAnnotationMetadata in interface AnnotationMetadataProvider

Returns:

The AnnotationMetadata

getTargetConstructor

public Constructor<T> getTargetConstructor()

Description copied from interface: BeanConstructor

Returns the Constructor this bean constructor stands for: the constructor of BeanConstructor.getDeclaringBeanType() whose parameter types are the raw types of BeanConstructor.getArguments().

This is the counterpart of io.micronaut.inject.MethodReference#getTargetMethod() for constructors. Framework implementations resolve the constructor once and hold it; this default resolves it on every call, so an implementation that knows its constructor should return it directly.

The result is null when the bean is not created through a constructor of the declaring bean type: a bean produced by a factory method or field, or an introspection instantiating through a static creator method, even one whose parameter types a declared constructor shares.

Specified by:

getTargetConstructor in interface BeanConstructor<T>

Returns:

The constructor, or null if the declaring bean type declares no such constructor

instantiate

public T instantiate(@Nullable Object... parameterValues)

Description copied from interface: BeanConstructor

Instantiate an instance.

Specified by:

instantiate in interface BeanConstructor<T>

Parameters:

parameterValues - The parameter values

Returns:

The instance, never null.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object