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This is the master POM file for Oracle's Implementation of the JSF 2.2 Specification.
There is a newer version: 2.2.20
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 * and Distribution License("CDDL") (collectively, the "License").  You
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 * obtain a copy of the License at
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package com.sun.faces.application.annotation;

import java.lang.annotation.Annotation;
import java.util.Collection;
import java.util.Collections;
import java.util.ArrayList;
import java.util.Map;
import java.util.HashMap;

import javax.faces.context.FacesContext;
import javax.faces.application.Application;
import javax.faces.validator.FacesValidator;

/**
 * 
 * ConfigAnnotationHandler for {@link FacesValidator} annotated
 * classes.
 * 
 */
public class ValidatorConfigHandler implements ConfigAnnotationHandler {

    private static final Collection> HANDLES;
    static {
        Collection> handles =
              new ArrayList>(1);
        handles.add(FacesValidator.class);
        HANDLES = Collections.unmodifiableCollection(handles);
    }

    private Map validators;


    // ------------------------------------- Methods from ComponentConfigHandler


    /**
     * @see com.sun.faces.application.annotation.ConfigAnnotationHandler#getHandledAnnotations()
     */
    public Collection> getHandledAnnotations() {

        return HANDLES;

    }


    /**
     * @see com.sun.faces.application.annotation.ConfigAnnotationHandler#collect(Class, java.lang.annotation.Annotation)
     */
    public void collect(Class target, Annotation annotation) {

        if (validators == null) {
            validators = new HashMap();
        }
        FacesValidator validatorAnnotation = (FacesValidator) annotation;
        String value = ((FacesValidator) annotation).value();
        if (null == value || 0 == value.length()) {
            value = target.getSimpleName();
            value = Character.toLowerCase(value.charAt(0)) + value.substring(1);
        }
        ValidatorInfo info = new ValidatorInfo(value, validatorAnnotation.isDefault());
        validators.put(info, target.getName());

    }


    /**
     * @see com.sun.faces.application.annotation.ConfigAnnotationHandler#push(javax.faces.context.FacesContext)
     */
    public void push(FacesContext ctx) {

        if (validators != null) {
            Application app = ctx.getApplication();
            for (Map.Entry entry : validators.entrySet()) {
                app.addValidator(entry.getKey().validatorId, entry.getValue());
                if (entry.getKey().isDefault) {
                    app.addDefaultValidatorId(entry.getKey().validatorId);
                }
            }
        }

    }


    // ---------------------------------------------------------- Nested Classes


    private static class ValidatorInfo {

        final String validatorId;
        final boolean isDefault;

        ValidatorInfo(String validatorId, boolean isDefault) {
            this.validatorId = validatorId;
            this.isDefault = isDefault;
        }

    }

}