Hacks (OmniFaces 2.0-SNAPSHOT API)

java.lang.Object
- org.omnifaces.util.Hacks

```
public final class Hacks
extends Object
```
Collection of JSF implementation and/or JSF component library specific hacks.

Since:

1.3

Author:

Bauke Scholtz, Arjan Tijms

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static long`	`getDefaultResourceMaxAge()` Returns the default resource maximum age in milliseconds.
`static PartialViewContext`	`getRichFacesPartialViewContext()` RichFaces PartialViewContext implementation does not extend from PartialViewContextWrapper.
`static Collection<String>`	`getRichFacesRenderIds()` RichFaces PartialViewContext implementation does not have the getRenderIds() method properly implemented.
`static Set<ResourceIdentifier>`	`getRichFacesResourceLibraryResources(ResourceIdentifier id)` Returns an ordered set of all JSF resource identifiers for the given RichFaces resource library resources.
`static PartialViewContext`	`getRichFacesWrappedPartialViewContext()` RichFaces PartialViewContext implementation does not have any getWrapped() method to return the wrapped PartialViewContext.
`static boolean`	`isCDIAvailableInGlassFish(ServletContext servletContext)` Returns `true` if CDI is available in GlassFish.
`static boolean`	`isJUELSupportingMethodExpression()`
`static boolean`	`isJUELUsed()`
`static boolean`	`isJUELUsed(ExpressionFactory factory)`
`static boolean`	`isMyFacesUsed()` Returns true if MyFaces is used.
`static boolean`	`isPrimeFacesDynamicResourceRequest(FacesContext context)` Returns true if the current request is a PrimeFaces dynamic resource request.
`static boolean`	`isRichFacesInstalled()` Returns true if RichFaces 4.0-4.3 is installed.
`static boolean`	`isRichFacesResourceLibraryRenderer(String rendererType)` Returns true if the given renderer type is recognizeable as RichFaces resource library renderer.
`static boolean`	`isScriptResourceRendered(FacesContext context, ResourceIdentifier id)` Returns whether the given script resource is rendered.
`static Method`	`methodExpressionToStaticMethod(ELContext context, MethodExpression methodExpression)` This method wraps a `MethodExpression` in a `Method` which can be statically invoked.
`static void`	`removeResourceDependencyState(FacesContext context)` Remove the resource dependency processing related attributes from the given faces context.
`static void`	`setScriptResourceRendered(FacesContext context, ResourceIdentifier id)` Set the given script resource as rendered.
`static void`	`setStylesheetResourceRendered(FacesContext context, ResourceIdentifier id)` Set the given stylesheet resource as rendered.

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

- Method Detail
  - isRichFacesInstalled
```
public static boolean isRichFacesInstalled()
```
    Returns true if RichFaces 4.0-4.3 is installed. That is, when the RichFaces 4.0-4.3 specific ExtendedPartialViewContextImpl is present in the runtime classpath. As this is usually auto-registered, we may safely assume that RichFaces 4.0-4.3 is installed.
    Note: in RichFaces 4.5, this class has changed to ExtendedPartialViewContext which finally properly extends PartialViewContextWrapper with among others the correct implementation for getRenderIds(), so the getRichFacesPartialViewContext() hack isn't anymore necessary for the purpose. Also note that RichFaces 4.4 doesn't exist.
    
    Returns:
    
    Whether RichFaces 4.0-4.3 is installed.
  - getRichFacesPartialViewContext
```
public static PartialViewContext getRichFacesPartialViewContext()
```
    RichFaces PartialViewContext implementation does not extend from PartialViewContextWrapper. So a hack wherin the exact fully qualified class name needs to be known has to be used to properly extract it from the FacesContext.getPartialViewContext().
    
    Returns:
    
    The RichFaces PartialViewContext implementation.
  - getRichFacesRenderIds
```
public static Collection<String> getRichFacesRenderIds()
```
    RichFaces PartialViewContext implementation does not have the getRenderIds() method properly implemented. So a hack wherin the exact name of the private field needs to be known has to be used to properly extract it from the RichFaces PartialViewContext implementation.
    
    Returns:
    
    The render IDs from the RichFaces PartialViewContext implementation.
  - getRichFacesWrappedPartialViewContext
```
public static PartialViewContext getRichFacesWrappedPartialViewContext()
```
    RichFaces PartialViewContext implementation does not have any getWrapped() method to return the wrapped PartialViewContext. So a reflection hack is necessary to return it from the private field.
    
    Returns:
    
    The wrapped PartialViewContext from the RichFaces PartialViewContext implementation.
  - isRichFacesResourceLibraryRenderer
```
public static boolean isRichFacesResourceLibraryRenderer(String rendererType)
```
    Returns true if the given renderer type is recognizeable as RichFaces resource library renderer.
    
    Parameters:
    
    rendererType - The renderer type to be checked.
    
    Returns:
    
    Whether the given renderer type is recognizeable as RichFaces resource library renderer.
  - getRichFacesResourceLibraryResources
```
public static Set<ResourceIdentifier> getRichFacesResourceLibraryResources(ResourceIdentifier id)
```
    Returns an ordered set of all JSF resource identifiers for the given RichFaces resource library resources.
    
    Parameters:
    
    id - The resource identifier of the RichFaces resource library (e.g. org.richfaces:ajax.reslib).
    
    Returns:
    
    An ordered set of all JSF resource identifiers for the given RichFaces resource library resources.
  - isJUELUsed
```
public static boolean isJUELUsed()
```
  - isJUELUsed
```
public static boolean isJUELUsed(ExpressionFactory factory)
```
  - isJUELSupportingMethodExpression
```
public static boolean isJUELSupportingMethodExpression()
```
  - methodExpressionToStaticMethod
```
public static Method methodExpressionToStaticMethod(ELContext context,
                                                    MethodExpression methodExpression)
```
    This method wraps a MethodExpression in a Method which can be statically invoked.
    Since Method is a final class with only a non-public constructor, various reflective tricks have been used to create an instance of this class and make sure it calls the given method expression. It has been tested on the Sun/Oracle JDK versions 6 and 7, and it should work on OpenJDK 6 and 7 as well. Other JDKs might not work.
    
    Parameters:
    
    context - the context used for evaluation of the method expression when it's invoked later. NOTE, this reference is retained by the returned method.
    
    methodExpression - the method expression to be wrapped
    
    Returns:
    
    a Method instance that when invoked causes the wrapped method expression to be invoked.
  - 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
  - setScriptResourceRendered
```
public static void setScriptResourceRendered(FacesContext context,
                                             ResourceIdentifier id)
```
    Set the given script resource as rendered.
    
    Parameters:
    
    context - The involved faces context.
    
    id - The resource identifier.
    
    Since:
    
    1.8
  - isScriptResourceRendered
```
public static boolean isScriptResourceRendered(FacesContext context,
                                               ResourceIdentifier id)
```
    Returns whether the given script resource is rendered.
    
    Parameters:
    
    context - The involved faces context.
    
    id - The resource identifier.
    
    Returns:
    
    Whether the given script resource is rendered.
    
    Since:
    
    1.8
  - setStylesheetResourceRendered
```
public static void setStylesheetResourceRendered(FacesContext context,
                                                 ResourceIdentifier id)
```
    Set the given stylesheet resource as rendered.
    
    Parameters:
    
    context - The involved faces context.
    
    id - The resource identifier.
    
    Since:
    
    1.8
  - 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.
  - getDefaultResourceMaxAge
```
public static long getDefaultResourceMaxAge()
```
    Returns the default resource maximum age in milliseconds.
    
    Returns:
    
    The default resource maximum age in milliseconds.
  - 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
  - isCDIAvailableInGlassFish
```
public static boolean isCDIAvailableInGlassFish(ServletContext servletContext)
```
    Returns true if CDI is available in GlassFish.
    
    Parameters:
    
    servletContext - The involved servlet context.
    
    Returns:
    
    true if CDI is available in GlassFish.

Class Hacks

Method Summary

Methods inherited from class java.lang.Object

Method Detail

isRichFacesInstalled

getRichFacesPartialViewContext

getRichFacesRenderIds

getRichFacesWrappedPartialViewContext

isRichFacesResourceLibraryRenderer

getRichFacesResourceLibraryResources

isJUELUsed

isJUELUsed

isJUELSupportingMethodExpression

methodExpressionToStaticMethod

isMyFacesUsed

setScriptResourceRendered

isScriptResourceRendered

setStylesheetResourceRendered

removeResourceDependencyState

getDefaultResourceMaxAge

isPrimeFacesDynamicResourceRequest

isCDIAvailableInGlassFish