Metadata (Java EE 8)

java.lang.Object
- javax.faces.view.facelets.Metadata

```
public abstract class Metadata
extends java.lang.Object
```
There are concrete subclasses within the implementation that map concepts in the Facelet VDL page to JSF Java API calls the appropriate instances. For example, the “validator” attribute on an input component is specified to point to a MethodExpression that references a method that performs the validation. There is a concrete subclass of Metadata to perform this action when that attribute appears in a Facelet VDL page.

Since:

2.0

Constructor Summary

Constructors
Constructor Description

Metadata()

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`abstract void`	`applyMetadata(FaceletContext ctx, java.lang.Object instance)`	Take the action prescribed in the JSF specification for this particular VDL element attribute.

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

- Constructor Detail
  - Metadata
```
public Metadata()
```
- Method Detail
  - applyMetadata
```
public abstract void applyMetadata(FaceletContext ctx,
                                   java.lang.Object instance)
```
    Take the action prescribed in the JSF specification for this particular VDL element attribute.
    
    Parameters:
    
    ctx - The FaceletContext for this request.
    
    instance - The instance from the JSF Java API on which the action should be taken. For example, an instance of EditableValueHolder.