JSF 2.3 Converters, validators and behaviors as injection targets

As you probably know JSF 2.2 comes with a solid support for injection in JSF artifacts. However, some artifacts were left out, and here we are talking about converters, validators and behaviors. Starting with JSF 2.3 this gap has been filled and we can inject (use @Inject) in @FacesConverter (javax.faces.convert.Converter), @FacesValidator (javax.faces.validator.Validator) and @FacesBehavior (javax.faces.component.behavior.Behavior).

JSF 2.3 is currently available as a milestone only (Mojarra 2.3.0 Milestone 4), and in order to test this facility you need to:

- specify a new attribute called managed on the corresponding annotations;

- add in WEB-INF the faces-config.xml with JSF 2.3 XSD;

So, for a converter, we have:

@FacesConverter(value = "fooConverter", managed = true)

public class FooConverter implements Converter {

 @Inject

 // artifact

 @Override

 public Object getAsObject(FacesContext context, UIComponent component, String value) {

  ...

  // use the injected artifact

  ...

 }

 @Override

 public String getAsString(FacesContext context, UIComponent component, Object value) {

  ...

  // use the injected artifact

  ...

 }

}

You can see a complete simple example here. I've tested under Payara 4.1.1 with Mojarra 2.3.0 Milestone 4.

For a validator, we have:

@FacesValidator(value = "fooValidator", managed = true)

public class FooValidator implements Validator {

 @Inject

 // artifact

 @Override

 public void validate(FacesContext fc, UIComponent uic, Object o) throws ValidatorException {

  ...

  // use the injected artifact

  ...

 }

}

You can see a complete simple example here. I've tested under Payara 4.1.1 with Mojarra 2.3.0 Milestone 4.

For a behavior, we have:

@FacesBehavior(value = "fooBehavior", managed = true)

public class FooBehavior extends ClientBehaviorBase {

 @Inject

 // artifact

    

 @Override

 public String getScript(ClientBehaviorContext behaviorContext) {       

  ...

  // use the injected artifact

  ...

 }

}

You can see a complete simple example here. I've tested under Payara 4.1.1 with Mojarra 2.3.0 Milestone 4.

In all three cases you need the JSF 2.3 XSD, as below:

<?xml version="1.0" encoding="UTF-8"?>

<faces-config

    xmlns="http://xmlns.jcp.org/xml/ns/javaee"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-facesconfig_2_3.xsd"

    version="2.3">  

</faces-config>