Hi, This looks like https://issues.apache.org/jira/browse/MYFACES-2552 where I have noted my workaround.
HTH, Matt On Wed, Jul 27, 2011 at 1:00 PM, S. Bunge <sbung...@nnga.de> wrote: > Hi all, > > I got an issue using the composite components feature of jsf2.0. > It's quite possible that I'm using the feature the wrong way. > > I created such component to combine a label and an h:inputText. If I use > it with string objects all works fine but when I start to use instances of > custom classes and a converter registered in the faces-config.xml must > handle the object, it fails. > > I use MyFaces 2.0.7 with a tomcat 6.0.32. I removed the label and other > stuff in my example: > > My custom component (cc-ns: "http://java.sun.com/jsf/composite";) > ... > <cc:interface> > <cc:attribute name="id" required="true" /> > <cc:attribute name="value" required="true" /> > </cc:interface> > <cc:implementation> > <h:inputText id="inputText" value="#{cc.attrs.value}" /> > </cc:implementation> > ... > > I named the file 'myCC.xhtml' in /resources/myComponents/ so I can use it > with ns-declaration: > 'xmlns:my="http://java.sun.com/jsf/composite/myComponents";' in my facelets. > > I created also a bean named 'helloWorldBacking' with getMuh/setMuh and it > returns an Object of Type 'Muh'. A converter is registered in the > faces-config with 'converter-for-class' to handle the conversation between > view and model for the type. > > If I use <h:inputText id="abc" value="#{helloWorldBacking.muh}" /> > directly in my facelet it works like a charm. The converter is called and > get/set is called with the right object in the update model phase. But if I > switch to the myCC-component I get an exception: > >> Caused by: javax.el.ELException: /resources/myComponents/myCC.xhtml at >> line 17 and column 62 value="#{cc.attrs.value}": >> /helloWorld.xhtml at line 17 and column 71 >> value="#{helloWorldBacking.muh}": Cannot convert asdfasd of type class >> java.lang.String to class elproblem.Muh >> at >> org.apache.myfaces.view.facelets.el.TagValueExpression.setValue(TagValueExpression.java:129) >> at >> org.apache.myfaces.view.facelets.el.LocationValueExpression.setValue(LocationValueExpression.java:120) >> at javax.faces.component.UIInput.updateModel(UIInput.java:379) > > Maybe the behavior is slightly different with the used EL-library (I tried > jasper-el of the tomcat and EL2.2 of the glassfish) -- 'sometimes' it works > with none-null values the right way but if the bean returns 'null' if fails > every time. > > My investigations came to a stop at following point: > _SharedRendererUtils#findUIOutputConverter doesn't get the outer value > binding of the composite component and can't determine the type. So no > converter is called and he tried to update > the model with a String. > If I set the type to the cc:attribute it doesn't work. That would be a bad > solution anyway because the composite component must be abstract > (otherwise I could call the right converter by id :-) ) > > So my questions: Do I use the composite components feature the right > way? If not: What is my fault? What are your suggestions? > > Thanks for your help, > Sven >
