ParamExtension (OmniFaces 4.0.1 API)

java.lang.Object
- org.omnifaces.cdi.param.ParamExtension

All Implemented Interfaces:

Extension
```
public class ParamExtension
extends Object
implements Extension
```
CDI extension that works around the fact that CDI insists on doing absolutely guaranteed type safe injections. While generally applaudable this unfortunately impedes writing true generic producers that dynamically do conversion based on the target type.
This extension collects the target types of each injection point qualified with the @Param annotation and dynamically registers Beans that effectively represents producers for each type.
Since OmniFaces 3.6, this extension also scans for @Param without @Inject and manually takes care of them while creating the bean.

Since:

2.0

Author:

Arjan Tijms

Constructor Summary

Constructors
Constructor Description

ParamExtension()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`<T> void`	`collectParams(ProcessInjectionTarget<T> event)`	Collect fields annotated with `Param`.
`void`	`processParamsWithInject(AfterBeanDiscovery event)`	Process `Param` fields annotated with `Inject`.
`static <T> void`	`processParamsWithoutInject(ProcessInjectionTarget<T> event, Set<AnnotatedField<?>> paramsWithoutInject)`	/** Process `Param` fields without `Inject` annotation.

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

Constructor Detail
- ParamExtension
```
public ParamExtension()
```

Method Detail

collectParams
```
public <T> void collectParams(@Observes
                              ProcessInjectionTarget<T> event)
```
Collect fields annotated with Param.

Type Parameters:

T - The generic injection target type.

Parameters:

event - The process injection target event.

processParamsWithInject

public void processParamsWithInject(@Observes
                                    AfterBeanDiscovery event)

Process Param fields annotated with Inject.

Parameters:: event - The after bean discovery event.

processParamsWithoutInject
```
public static <T> void processParamsWithoutInject(ProcessInjectionTarget<T> event,
                                                  Set<AnnotatedField<?>> paramsWithoutInject)
```
/** Process Param fields without Inject annotation.

Type Parameters:

T - The generic injection target type.

Parameters:

event - The process injection target event.

paramsWithoutInject - The Param fields without Inject annotation.