如何在选定的XHTML与托管bean接口之间共享f：event of f：metadata作为参数(How share some f:event of f:metadata between selec

如何在选定的XHTML与托管bean接口之间共享f：event of f：metadata作为参数(How share some f:event of f:metadata between selected XHTML with managed bean interface as parameter)

注意到从JSF视图元数据揭秘 ：

由于此标记与当前视图元数据有关，因此它不参与XHTML模板（页面作者必须确保元素不出现在模板或包含的页面上;它可以在模板客户端中）并且它是<f:view>直接子元素<f:view> 。

我有多个<f:viewParam>和<f:event>在许多XHTML页面中重复，而这些页面又是template.xhtml客户端。 每个f:event依赖于给定的托管bean，其中托管bean对于每个XHTML页面是不同的（但是尊重公共接口，即，对于每个相关的托管bean存在相同的侦听器操作）：

<f:view> <f:metadata> <!-- I want to share this across many XHTML parametrised by the bean --> <f:viewParam name="id" value="#{particularBean.id}"/> <f:event type="preRenderView" listener="#{particularBean.opCommon1}"/> <f:event type="preRenderView" listener="#{particularBean.opCommon2}"/> <!-- END SHARED PORTION --> <f:event type="preRenderView" listener="#{particularBean.onlyForMe}"/> </f:metadata> </f:view> <ui:composition template="/template.xhtml">

问：如何封装共享的<f:viewParam>和<f:event>部分，以便它可以“包含”并作为公共策略片段处理，特定的托管bean（满足公共接口）为每个传入XHTML页面？

Noting that from JSF view metadata demystified:

Since this tag is about current view metadata it doesn't participate in XHTML templates (the page author must ensure that the element does not appear on a template or included page; it can be in a template client) and it is direct child of <f:view>.

I have multiple <f:viewParam> and <f:event> that repeat in many XHTML pages, which are in turn clients of a template.xhtml. Each f:event depends on a given managed bean, where the managed bean is different for each XHTML page (but respects a common interface, i.e., the same operations for the listeners exist for every relevant managed bean):

<f:view> <f:metadata> <!-- I want to share this across many XHTML parametrised by the bean --> <f:viewParam name="id" value="#{particularBean.id}"/> <f:event type="preRenderView" listener="#{particularBean.opCommon1}"/> <f:event type="preRenderView" listener="#{particularBean.opCommon2}"/> <!-- END SHARED PORTION --> <f:event type="preRenderView" listener="#{particularBean.onlyForMe}"/> </f:metadata> </f:view> <ui:composition template="/template.xhtml">

Q: How can I encapsulate the shared <f:viewParam> and <f:event> portion so that it can be "included" and treated as a common policy fragment, with particular managed beans (meeting the common interface) passed in for each XHTML page ?

最满意答案

我在我自己的一个旧项目中找到了答案（正如我发布的那样，我在几年前的某个阶段已经模糊地回忆过我已经调查过了）。 这有效：

在/include/shared.xhtml ：

<ui:composition xmlns="http://www.w3.org/1999/xhtml" xmlns:f="http://xmlns.jcp.org/jsf/core" xmlns:ui="http://xmlns.jcp.org/jsf/facelets" > <f:viewParam name="id" value="#{particularBean.id}"/> <f:event type="preRenderView" listener="#{compatibleBean.opCommon1}"/> <f:event type="preRenderView" listener="#{compatibleBean.opCommon2}"/> </ui:composition>

在任何客户：

<f:view> <f:metadata> <ui:include src="/included/shared.xhtml"> <ui:param name="compatibleBean" value="#{particularBean}"/> </ui:include> <f:event type="preRenderView" listener="#{particularBean.onlyForMe}"/> </f:metadata> </f:view>

I found the answer in one of my own older projects (as I posted I recalled vaguely I had investigated this already at some stage years ago). This works:

In /include/shared.xhtml:

<ui:composition xmlns="http://www.w3.org/1999/xhtml" xmlns:f="http://xmlns.jcp.org/jsf/core" xmlns:ui="http://xmlns.jcp.org/jsf/facelets" > <f:viewParam name="id" value="#{particularBean.id}"/> <f:event type="preRenderView" listener="#{compatibleBean.opCommon1}"/> <f:event type="preRenderView" listener="#{compatibleBean.opCommon2}"/> </ui:composition>

And in any client:

<f:view> <f:metadata> <ui:include src="/included/shared.xhtml"> <ui:param name="compatibleBean" value="#{particularBean}"/> </ui:include> <f:event type="preRenderView" listener="#{particularBean.onlyForMe}"/> </f:metadata> </f:view>