You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@deltaspike.apache.org by "Gerhard Petracek (JIRA)" <ji...@apache.org> on 2015/06/01 10:46:18 UTC
[jira] [Resolved] (DELTASPIKE-914) Rendering a dynamic
p:graphicImage whose StreamConent is in a Deltaspike ViewScoped bean seems
not to work
[ https://issues.apache.org/jira/browse/DELTASPIKE-914?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gerhard Petracek resolved DELTASPIKE-914.
-----------------------------------------
Resolution: Won't Fix
we should add a hint to the documentation
> Rendering a dynamic p:graphicImage whose StreamConent is in a Deltaspike ViewScoped bean seems not to work
> ----------------------------------------------------------------------------------------------------------
>
> Key: DELTASPIKE-914
> URL: https://issues.apache.org/jira/browse/DELTASPIKE-914
> Project: DeltaSpike
> Issue Type: Bug
> Components: JSF-Module
> Affects Versions: 1.4.0
> Environment: All containers - tested on Weblogic 12.1.2 but the issue is cross cuting
> Reporter: Nuno G. de M
> Assignee: Thomas Andraschko
> Labels: graphicImage, primefaces, viewaccesscoped
>
> Hi,
> This issue has to do with incompatibility between primefaces p:graphicImage and deltaSpike ViewAccessScoped beans.
> The prime faces graphic image apperently has two core modes of rendering an html <img> component. On one mode it will generate a resource to a statically available image.
> Under this scenario we have no problems even when workign with a ViewAccessScoped bean to provide the img resource path.
> Such as:
> <h:panelGroup layout="block">
> <h:outputText value="As resource determined from viewSopecedBean: " />
> <br/>
> <br/>
> <p:graphicImage id="previewImageB" value="#{resource[viewScopeadBean.imageResource]}" width="250px" height="250px" rendered="true" />
> </h:panelGroup>
> However, when rendering dynamic content, ViewAccess scoped beans are not compatible, as the primefaces dynamic content handler tries to evaluate a ValueExpression and the ViewScopedBean context appears not to be active.
> <h:panelGroup layout="block">
> <h:outputText value="As dynamicRsource determined fromViewScopedBean: " />
> <br/>
> <br/>
> <p:graphicImage id="previewImageC" value="#{viewScopeadBean.streamedContent}" width="250px" height="250px" rendered="true" />
>
> <br/>
> <p> Ok and here we have our bug.
> The problem we have here seems to be that PrimeResourceHandler and the GraphicImageRenderer work together without problems with deltaspike when dealing with static content.
> However, when we are dealing with dynaminc content set on page bean
> the Renderer will tune the session context with the expression language of the .xhtml page so when the browser asks for the img src,
> PrimeResourceHandler will be able to discover what EL was associated to that img resource
> and resolve on the fly the dynamic content asked by the user.
> However, the view access scoped seems not be available for PrimeFaces so he comes out empty handed.
> </p>
> </h:panelGroup>
> I have written a small sample application that renders the image of a labrador using both flavors (static resource and dynamic resource).
> https://github.com/99sono/delta-spike-dynamic-content_issue
> https://github.com/99sono/delta-spike-dynamic-content_issue/blob/master/src/main/resources/BugOverview.docx
> I am not sure if a bug should not be opened as well to primefaces, since it looks to me that addressing this issue will most likely require coordination on both teams.
> The only work-around for this seems to be to re-factor code to use request scoped beans or session scoped beans.
> Or if geting view scoped beans to work together with this component is really a must, which in our case it is....
> We will have to come-up with a temporary hack to the
> p:graphicImage renderer and to the PrimeResourceHandler to be able to somehow bypass the fact that ViewAccess scope is not available.
> I really do not wish to go down this path - more than temporarily.
> Thank you for your support,
> Kindest regards,
> Nuno.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)