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EE4J Compatible Implementation for Jakarta Faces API

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/*
 * Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package com.sun.faces.cdi;

import java.lang.reflect.Type;
import java.util.Map;

import jakarta.enterprise.context.RequestScoped;
import jakarta.faces.annotation.RequestParameterMap;
import jakarta.faces.context.ExternalContext;
import jakarta.faces.context.FacesContext;

/**
 * 
 * The request parameter map producer is the CDI producer that allows injection of the request parameter map
 * using @Inject.
 * 
 *
 * @since 2.3
 * @see ExternalContext#getRequestParameterMap()
 */
public class RequestParameterMapProducer extends CdiProducer> {

    /**
     * Serialization version
     */
    private static final long serialVersionUID = 1L;

    public RequestParameterMapProducer() {
        super.name("param").scope(RequestScoped.class).qualifiers(RequestParameterMap.Literal.INSTANCE)
                .types(new ParameterizedTypeImpl(Map.class, new Type[] { String.class, String.class }), Map.class, Object.class).beanClass(Map.class)
                .create(e -> FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap());
    }

}