[ http://issues.apache.org/jira/browse/MYFACES-856?page=comments#action_12358339 ]
Mario Ivankovits commented on MYFACES-856: ------------------------------------------ You are right, these are the downsides of this solution, but as I said, it isnt a solution its a HACK. Even if you put your aliasbean directly after f:view, the aliased binding cant be resolved if you dont call "makeAlias". You might also have a look at MYFACES-334 (reported by me ;-) ) There Mathias Broekelmann pointed out another solution. Mainly to bind against a non aliased request bean which acts as an interface, though, this leads to not well maintainable code I think. Might it be possible to treat aliases static and thus, once the binding has been resolved, to rewrite the binding information directly in the component? > t:aliasBean + binding + panelGrid causes exception > -------------------------------------------------- > > Key: MYFACES-856 > URL: http://issues.apache.org/jira/browse/MYFACES-856 > Project: MyFaces > Type: Bug > Reporter: Simon Kitching > > The following use of t:aliasBean causes an exception: > ==== including page > <%@ taglib uri="http://java.sun.com/jsf/html"; prefix="h"%> > <%@ taglib uri="http://java.sun.com/jsf/core"; prefix="f"%> > <%@ taglib uri="http://myfaces.apache.org/tomahawk"; prefix="t"%> > <f:view> > <h:panelGrid> > <t:aliasBean alias="#{target}" value="#{someBean}"> > <jsp:include page="included.jsp"/> > </t:aliasBean> > </h:panelGrid> > </f:view> > ==== included page > <%@ taglib uri="http://java.sun.com/jsf/html"; prefix="h"%> > <%@ taglib uri="http://java.sun.com/jsf/core"; prefix="f"%> > <%@ taglib uri="http://myfaces.apache.org/tomahawk"; prefix="t"%> > <f:subview id="foo"> > <h:inputText binding="#{target.input}"/> > </f:subview> > The thrown exception is: > javax.faces.el.PropertyNotFoundException: Base is null: target > at > org.apache.myfaces.el.ValueBindingImpl.resolveToBaseAndProperty(ValueBindingImpl.java:457) > at > org.apache.myfaces.el.ValueBindingImpl.setValue(ValueBindingImpl.java:245) > at > org.apache.myfaces.application.ApplicationImpl.createComponent(ApplicationImpl.java:434) > I believe the problem is that panelGrid renders its children. This means that > the components are first created, then the panelGrid iterates over them to > render them. However the alias bean hasn't set up the alias at the time the > components are being created. And ApplicationImpl.createComponent(binding, > context, componentType) is immediately evaluating the binding expression, > resulting in the target bean for the binding not being found. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
