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jakarta.faces.convert

public @Interface FacesConverter

extends Annotation
Known Direct Implementers
jakarta.faces.convert.FacesConverter.Literal
Annotations
@Retention:RUNTIME
@Target:TYPE, FIELD, METHOD, PARAMETER
@Inherited
@Qualifier
Static Imports
java.lang.annotation.ElementType.FIELD, .ElementType.METHOD, .ElementType.PARAMETER, .ElementType.TYPE, .RetentionPolicy.RUNTIME

The presence of this annotation on a class automatically registers the class with the runtime as a Converter. The value of the value attribute is taken to be converter-id, the value of the forClass attribute is taken to be converter-for-class and the fully qualified class name of the class to which this annotation is attached is taken to be the converter-class. The implementation must guarantee that for each class annotated with FacesConverter, found with the algorithm in section 11.4 "Annotations that correspond to and may take the place of entries in the Application Configuration Resources" of the Jakarta Faces Specification Document, the proper variant of Application.addConverter() is called. If converter-id is not the empty string, jakarta.faces.application.Application#addConverter(java.lang.String, java.lang.String) is called, passing the derived converter-id as the first argument and the derived converter-class as the second argument. If converter-id is the empty string, jakarta.faces.application.Application#addConverter(java.lang.Class, java.lang.String) is called, passing the converter-for-class as the first argument and the derived converter-class as the second argument. The implementation must guarantee that all such calls to addConverter() happen during application startup time and before any requests are serviced.

The preceding text contains an important subtlety which application users should understand. It is not possible to use a single @FacesConverter annotation to register a single Converter implementation both in the by-class and the by-converter-id data structures. One way to achieve this result is to put the actual converter logic in an abstract base class, without a @FacesConverter annotation, and derive two sub-classes, each with a @FacesConverter annotation. One sub-class has a value attribute but no forClass attribute, and the other sub-class has the converse.

Please see the ViewDeclarationLanguage documentation for <h:selectManyListBox> for another important subtlety regarding converters and collections.

Nested and Inner Type Summary

Modifier and TypeClass and Description
public static class
FacesConverter.Literal

Supports inline instantiation of the FacesConverter qualifier.

Method Summary

Modifier and TypeMethod and Description
public Class<T>

Returns:

the class
forClass
()

The value of this annotation attribute is taken to be the converter-for-class with which instances of this class of converter can be instantiated by calling jakarta.faces.application.Application#createConverter(java.lang.Class).

public boolean

Returns:

whether or not this converter is managed by CDI
managed
()

The value of this annotation attribute is taken to be an indicator that flags whether or not the given converter is a CDI managed converter.

public String

Returns:

the converter-id
value
()

The value of this annotation attribute is taken to be the converter-id with which instances of this class of converter can be instantiated by calling jakarta.faces.application.Application#createConverter(java.lang.String).

Inherited from java.lang.annotation.Annotation:
annotationTypeequalshashCodetoString

Method Detail

forClassback to summary
public Class<T> forClass()

The value of this annotation attribute is taken to be the converter-for-class with which instances of this class of converter can be instantiated by calling jakarta.faces.application.Application#createConverter(java.lang.Class).

Returns:Class<T>

the class

managedback to summary
public boolean managed()

The value of this annotation attribute is taken to be an indicator that flags whether or not the given converter is a CDI managed converter.

Returns:boolean

whether or not this converter is managed by CDI

valueback to summary
public String value()

The value of this annotation attribute is taken to be the converter-id with which instances of this class of converter can be instantiated by calling jakarta.faces.application.Application#createConverter(java.lang.String).

Returns:String

the converter-id

jakarta.faces.convert back to summary

public final Class FacesConverter.Literal

extends AnnotationLiteral<FacesConverter>
implements FacesConverter
Class Inheritance
All Implemented Interfaces
jakarta.faces.convert.FacesConverter, java.lang.annotation.Annotation

Supports inline instantiation of the FacesConverter qualifier.

Since
4.0

Field Summary

Modifier and TypeField and Description
private final Class<T>
public static final FacesConverter.Literal
INSTANCE

Instance of the FacesConverter qualifier.

private final boolean
private static final long
private final String

Constructor Summary

AccessConstructor and Description
private
Literal(String value, Class<T> forClass, boolean managed)

Method Summary

Modifier and TypeMethod and Description
public Class<T>
forClass()

Implements jakarta.faces.convert.FacesConverter.forClass.

The value of this annotation attribute is taken to be the converter-for-class with which instances of this class of converter can be instantiated by calling jakarta.faces.application.Application#createConverter(java.lang.Class).

public boolean
managed()

Implements jakarta.faces.convert.FacesConverter.managed.

The value of this annotation attribute is taken to be an indicator that flags whether or not the given converter is a CDI managed converter.

public static FacesConverter.Literal
of(String value, Class<T> forClass, boolean managed)

public String
value()

Implements jakarta.faces.convert.FacesConverter.value.

The value of this annotation attribute is taken to be the converter-id with which instances of this class of converter can be instantiated by calling jakarta.faces.application.Application#createConverter(java.lang.String).

Inherited from jakarta.enterprise.util.AnnotationLiteral:
annotationTypeequalshashCodetoString

Field Detail

forClassback to summary
private final Class<T> forClass
INSTANCEback to summary
public static final FacesConverter.Literal INSTANCE

Instance of the FacesConverter qualifier.

managedback to summary
private final boolean managed
serialVersionUIDback to summary
private static final long serialVersionUID

Hides jakarta.enterprise.util.AnnotationLiteral.serialVersionUID.

valueback to summary
private final String value

Constructor Detail

Literalback to summary
private Literal(String value, Class<T> forClass, boolean managed)

Method Detail

forClassback to summary
public Class<T> forClass()

Implements jakarta.faces.convert.FacesConverter.forClass.

Doc from jakarta.faces.convert.FacesConverter.forClass.

The value of this annotation attribute is taken to be the converter-for-class with which instances of this class of converter can be instantiated by calling jakarta.faces.application.Application#createConverter(java.lang.Class).

Returns:Class<T>

the class

Annotations
@Override
managedback to summary
public boolean managed()

Implements jakarta.faces.convert.FacesConverter.managed.

Doc from jakarta.faces.convert.FacesConverter.managed.

The value of this annotation attribute is taken to be an indicator that flags whether or not the given converter is a CDI managed converter.

Returns:boolean

whether or not this converter is managed by CDI

Annotations
@Override
ofback to summary
public static FacesConverter.Literal of(String value, Class<T> forClass, boolean managed)
valueback to summary
public String value()

Implements jakarta.faces.convert.FacesConverter.value.

Doc from jakarta.faces.convert.FacesConverter.value.

The value of this annotation attribute is taken to be the converter-id with which instances of this class of converter can be instantiated by calling jakarta.faces.application.Application#createConverter(java.lang.String).

Returns:String

the converter-id

Annotations
@Override