Module org.omnifaces
Package org.omnifaces.util

Class Hacks

  • public final class Hacks
extends Object

    Collection of Faces implementation and/or Faces component library and/or server specific hacks.

    This class is not listed in showcase! Should I use it?

    This class is indeed intended for internal usage only. We won't add methods here on user request. We only add methods here once we encounter non-DRY code in OmniFaces codebase. The methods may be renamed/changed without notice.

    We don't stop you from using it if you found it in the Javadoc and you think you find it useful, but you have to accept the risk that the method signatures can be changed without notice. This utility class exists because OmniFaces intends to be free of 3rd party dependencies.

    Since:
    1.3
    Author:
    Bauke Scholtz, Arjan Tijms

    • Method Detail

      • isMojarraUsed

        public static boolean isMojarraUsed()
        Returns true if Mojarra is used. That is, when the FacesContext instance is from the Mojarra specific package.
        Returns:
        Whether Mojarra is used.
        Since:
        3.9

      • isMyFacesUsed

        public static boolean isMyFacesUsed()
        Returns true if MyFaces is used. That is, when the FacesContext instance is from the MyFaces specific package.
        Returns:
        Whether MyFaces is used.
        Since:
        1.8

      • getDefaultResourceMaxAge

        public static long getDefaultResourceMaxAge()
        Returns the default resource maximum age in milliseconds.
        Returns:
        The default resource maximum age in milliseconds.

      • removeResourceDependencyState

        public static void removeResourceDependencyState​(FacesContext context)
        Remove the resource dependency processing related attributes from the given faces context.
        Parameters:
        context - The involved faces context.

      • setComponentResourceUniqueId

        public static void setComponentResourceUniqueId​(FacesContext context,
                                                UIComponent resource)
        Set the unique ID of the component resource, taking into account MyFaces-specific way of generating a resource specific unique ID.
        Parameters:
        context - The involved faces context.
        resource - The involved component resource.
        Since:
        2.6.1

      • clearCachedFacesServletMapping

        public static void clearCachedFacesServletMapping​(FacesContext context)
        Clear the cached faces servlet mapping as interpreted by either Mojarra or MyFaces. This is useful if you want to force the impl to recalculate the faces servlet mapping.
        Parameters:
        context - The involved faces context.
        Since:
        3.10

      • isFacesScriptResourceAvailable

        public static boolean isFacesScriptResourceAvailable()
        Returns true if jakarta.faces:faces.js script resource is available.
        Returns:
        true if jakarta.faces:faces.js script resource is available.
        Since:
        4.0

      • removeViewState

        public static void removeViewState​(FacesContext context,
                                   ResponseStateManager manager,
                                   String viewId)
        Remove server side Faces view state (and view scoped beans) associated with current request.
        Parameters:
        context - The involved faces context.
        manager - The involved response state manager.
        viewId - The view ID of the involved view.
        Since:
        2.3

      • getStateHelper

        public static StateHelper getStateHelper​(UIComponent component)
        Expose protected state helper into public.
        Parameters:
        component - The component to obtain state helper for.
        Returns:
        The state helper of the given component.
        Since:
        2.3

      • getMetadataFacet

        public static UIComponent getMetadataFacet​(UIViewRoot viewRoot)
        Returns f:metadata facet from UIViewRoot. MyFaces 3.x unexpectedly doesn't use UIViewRoot.METADATA_FACET_NAME anymore to identify the facet.
        Parameters:
        viewRoot - The UIViewRoot to obtain f:metadata facet from.
        Returns:
        f:metadata facet from UIViewRoot.
        Since:
        4.0

      • findWrappedVariableMapper

        public static VariableMapper findWrappedVariableMapper​(VariableMapper mapper)
        Finds the wrapped variable mapper of the given variable mapper.
        Parameters:
        mapper - The variable mapper to find wrapped variable mapper for.
        Returns:
        The wrapped variable mapper of the given variable mapper.
        Since:
        3.14.4

      • isPrimeFacesDynamicResourceRequest

        public static boolean isPrimeFacesDynamicResourceRequest​(FacesContext context)
        Returns true if the current request is a PrimeFaces dynamic resource request.
        Parameters:
        context - The involved faces context.
        Returns:
        Whether the current request is a PrimeFaces dynamic resource request.
        Since:
        1.8

      • isPrimeFacesAjaxRequest

        public static boolean isPrimeFacesAjaxRequest​(FacesContext context)
        Returns true if the current request is a PrimeFaces ajax request.
        Parameters:
        context - The involved faces context.
        Returns:
        Whether the current request is a PrimeFaces ajax request.
        Since:
        2.7.12

      • isNestedInPrimeFacesDialog

        public static boolean isNestedInPrimeFacesDialog​(UIComponent... components)
        Returns true if the given components are nested in (same) PrimeFaces dialog.
        Parameters:
        components - The components to be checked.
        Returns:
        Whether the given components are nested in (same) PrimeFaces dialog.
        Since:
        2.6

      • isTomcatWebSocketBombed

        public static boolean isTomcatWebSocketBombed​(Session session,
                                              IllegalStateException illegalStateException)
        Returns true if the given WS session is from Tomcat and given illegal state exception is caused by a push bomb which Tomcat couldn't handle. See also https://bz.apache.org/bugzilla/show_bug.cgi?id=56026 and https://github.com/omnifaces/omnifaces/issues/234
        Parameters:
        session - The WS session.
        illegalStateException - The illegal state exception.
        Returns:
        Whether it was Tomcat who couldn't handle the push bomb.
        Since:
        2.5