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package org.richfaces.component;
import  javax.faces.component.UIComponent;
import  javax.faces.component.UIComponentBase;
import  javax.faces.context.FacesContext;

The <a4j:region> component specifies a part of the JSF component tree to be processed on the server. The region causes all the a4j and rich Ajax controls to execute: decoding, validating, and updating the model. The region causes these components to execute even if not explicitly declared. As such, processing areas can more easily be marked using a declarative approach.

Regions can be nested, in which case only the parent region of the component initiating the request will be processed.

Nick Belaevski
@JsfComponent(tag = @Tag(name = "region", type = .))
public abstract class AbstractRegion extends UIComponentBase implements MetaComponentResolver, AjaxContainer {
    public static final String COMPONENT_TYPE = "org.richfaces.Region";
    public static final String COMPONENT_FAMILY = "org.richfaces.AjaxContainer";
    public String resolveClientId(FacesContext facesContext, UIComponent contextComponentString metaId) {
        if (META_COMPONENT_ID.equals(metaId)) {
            return getClientId(facesContext);
        return null;
    public String substituteUnresolvedClientId(FacesContext facesContext, UIComponent contextComponentString metaComponentId) {
        return null;
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