InjectionResolver (Payara Project 6.2022.1.Alpha3 API)

java.lang.Object
- org.jvnet.hk2.config.InjectionResolver<U>

Type Parameters:

U - U is the annotation used to identify the injection targets.

All Implemented Interfaces:

InjectionResolverQuery

Direct Known Subclasses:

MapInjectionResolver
```
public abstract class InjectionResolver<U extends Annotation>
extends Object
implements InjectionResolverQuery
```
Implementation of this abstract class are handling injection resolution for a particular injection annotation {@see Inject} Injection targets are identified by the generic parameter and the constructor of this class. Potential injection targets are fields and methods of the injected type.

Author:

Jerome Dochez

Field Summary

Fields
Modifier and Type Field Description

Class<U> type

Constructor Summary

Constructors
Constructor Description

InjectionResolver(Class<U> type)
Construct a resolver with a particular injection type

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Method`	`getSetterMethod(Method annotated, U annotation)`	Returns the setter method responsible for setting the resource identified by the passed annotation on the passed annotated method.
`boolean`	`isOptional(AnnotatedElement annotated, U annotation)`	Returns true if the resolution of this injection identified by the passed annotation instance is optional

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.jvnet.hk2.config.InjectionResolverQuery
getValue

- Field Detail
  - type
```
public final Class<U extends Annotation> type
```
- Constructor Detail
  - InjectionResolver
```
public InjectionResolver(Class<U> type)
```
    Construct a resolver with a particular injection type
    
    Parameters:
    
    type - the injection annotation type
- Method Detail
  - getSetterMethod
```
public Method getSetterMethod(Method annotated,
                              U annotation)
```
    Returns the setter method responsible for setting the resource identified by the passed annotation on the passed annotated method. This is useful when the annotation is specified on the getter for instance (due to external specification requirements for instance) while the setter should be used if values must be set using this injection resolver. By default, the setter method is the annotated method.
    
    Parameters:
    
    annotated - is the annotated Method
    
    annotation - the annotation on the method
    
    Returns:
    
    the setter method to use for injecting the annotation identified resource
  - isOptional
```
public boolean isOptional(AnnotatedElement annotated,
                          U annotation)
```
    Returns true if the resolution of this injection identified by the passed annotation instance is optional
    
    Parameters:
    
    annotated - is the annotated java element Method or Field
    
    annotation - the injection metadata
    
    Returns:
    
    true if the {@see getValue()} can return null without generating a faulty injection operation