[jira] [Created] (MYFACES-4438) Clarify FaceletContext.getAttribute() (Retrieving ui:param from bean)

["Volodymyr Siedlecki (Jira)" <de...@myfaces.apache.org>]

Volodymyr Siedlecki created MYFACES-4438:
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             Summary: Clarify FaceletContext.getAttribute() (Retrieving ui:param from bean) 
                 Key: MYFACES-4438
                 URL: https://issues.apache.org/jira/browse/MYFACES-4438
             Project: MyFaces Core
          Issue Type: Bug
    Affects Versions: 3.0.2, 2.3.10, 2.0.24, 2.2.15
            Reporter: Volodymyr Siedlecki


{color:#0e101a}I have a scenario with the following code where retrieving "{{{}{color:#0e101a}dataId{color}{}}}" return null. 
{color}

 

{color:#0e101a}index.xhtml:{color}
{quote}{{{color:#0e101a}<ui:composition template="layout.xhtml">{color}}}{{{}{color:#0e101a} <ui:param name="dataId" value="foo" />{color}{}}}{{{}{color:#0e101a}</ui:composition>{color}{}}}
{quote}
{color:#0e101a}Managed Bean:{color}
{quote}{{{}{color:#0e101a} FaceletContext faceletContext = (FaceletContext)FacesContext.getCurrentInstance().getAttributes().get(FaceletContext.FACELET_CONTEXT_KEY);{color}{}}}{{{}{color:#0e101a}faceletContext.getAttribute("{{{}{color:#0e101a}dataId{color}{}}}");{color}{}}}
{quote}
{color:#0e101a} {color}

{color:#0e101a}I found that this code above works in Mojarra 2.2.x but not in MyFaces. I also found some variation in behavior between versions in MyFaces.{color}

 

{color:#0e101a}Myfaces 2.0.25: FacesContext.getCurrentInstance().getAttributes().get(FaceletContext.FACELET_CONTEXT_KEY) return null {color}

 

{color:#0e101a}MyFaces 2.2.15 and higher: faceletContext.getAttribute("viewId"); returns null{color}

 

 

{color:#0e101a}In some old posts, BalusC mentioned that FaceletContext is only available at build time (restore view phase) in MyFaces. Is that still true for 2.2/2.3 and newer? Should getAttributes().get(FaceletContext.FACELET_CONTEXT_KEY) then return null as in 2.0.x? {color}

 

{color:#0e101a}What's the correct behavior here? The implementation is quite confusing as the FaceletContext.FACELET_CONTEXT_KEY value within the attribute map is set and restored numerous times.{color}

 

{color:#0e101a}I believe it is because when I use c:set (also build time), the faceletContext attribute map did contain the "dataId" value during the @PostConstruct method of the bean. {color}

 

{color:#0e101a}Any guidance is appreciated. {color}

 

{color:#0e101a}Old discussion here: {color}

[{color:#4a6ee0}https://stackoverflow.com/questions/13930629/uiinclude-using-faceletscontext{color}]{color:#0e101a} {color}

[{color:#4a6ee0}https://stackoverflow.com/questions/14745259/how-to-create-uiinclude-tag-programmatically{color}]{color:#0e101a} {color}

 

 

{color:#0e101a} Issues which touch on FaceletContext: {color}

{color:#0e101a}- {color}{color:#4a6ee0} https://issues.apache.org/jira/browse/MYFACES-3246{color}

{color:#0e101a}- {color}{color:#4a6ee0}https://issues.apache.org/jira/browse/MYFACES-3848{color}{color:#0e101a} {color}

 



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