jsf - Simulation of f:viewAction on master page template -
there application scoped bean.
@named @applicationscoped public class bean { @inject private service service; private entity entity; // getter. // entity periodically fetched ejb timers on server side // when fetched notifies associated clients through websockets. // clients update sending ajax request. // of these things collectively form different chapter. // update() needs invoked, when client sends synchronous request public bean() {} @postconstruct private void init() { consume(); } private void consume() { entity = service.getentity(); } public void update() { consume(); system.out.println("update called."); } } this bean accessed page included in master template follows (west.xhtml) :
<html lang="#{localebean.language}" xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://xmlns.jcp.org/jsf/html" xmlns:f="http://xmlns.jcp.org/jsf/core"> <h:form> <!-- merely fake attempt show expected. --> <ui:define name="metadata"> <f:metadata> <f:viewaction action="{bean.update}"/> </f:metadata> </ui:define> <h:outputtext value="#{bean.entity.field}"/> </h:form> </html> there false attempt invoke update() method using <f:viewaction> master template against semantics.
for function, <f:viewaction> needs repeated on individual template clients makes difficult maintain, when needs changed.
is there possibility avoid <f:viewaction> being repeated on place on every template client?
the master page template looks following. not required. assume above page included using <ui:include src=".."/> in following master template (/web-inf/templates/template.xhtml).
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://xmlns.jcp.org/jsf/html" xmlns:ui="http://xmlns.jcp.org/jsf/facelets" xmlns:f="http://xmlns.jcp.org/jsf/core"> <f:view locale="..." ...> <ui:insert name="metadata"></ui:insert> <h:head> <title><ui:insert name="title">default title</ui:insert></title> </h:head> <h:body> <h:panelgroup layout="block"> <ui:insert name="contentbar"> <!-- file given above included here - west.xhtml. --> <ui:include src="/web-inf/template/contents/west.xhtml"/> </ui:insert> </h:panelgroup> <ui:insert name="content">default contents</ui:insert> <!--other content bars.--> </h:body> </f:view> </html> <f:viewaction> needs placed on template clients associated following.
<ui:composition template="/web-inf/templates/template.xhtml" xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://xmlns.jcp.org/jsf/html" xmlns:ui="http://xmlns.jcp.org/jsf/facelets" xmlns:f="http://xmlns.jcp.org/jsf/core"> <ui:define name="title">page title</ui:define> <ui:define name="metadata"> <f:metadata> <f:viewaction action="#{bean.update}"/> </f:metadata> </ui:define> <ui:define name="content"> <!--main contents--> </ui:define> </ui:composition> and forth, <f:viewaction> needs repeated on every such template client coherent task.
is there way declare <f:viewaction> appropriately @ single place there no need repeat on every associated template client?
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