Hi, in IMPL we have this interface: https://svn.apache.org/repos/asf/myfaces/core/trunk/impl/src/main/java/org/apache/myfaces/view/facelets/tag/TagDecorator.java
However it has been promoted to be an API: https://svn.apache.org/repos/asf/myfaces/core/trunk/api/src/main/java/javax/faces/view/facelets/TagDecorator.java the IMPL one is used in these classes: core/impl/src/main/java/org/apache/myfaces/view/facelets/FaceletViewHandler.java core/impl/src/main/java/org/apache/myfaces/view/facelets/FaceletViewDeclarationLanguage.java core/impl/src/main/java/org/apache/myfaces/view/facelets/compiler/CompilationManager.java core/impl/src/main/java/org/apache/myfaces/view/facelets/compiler/Compiler.java core/impl/src/main/java/org/apache/myfaces/view/facelets/tag/jsf/html/HtmlDecorator.java core/impl/src/main/java/org/apache/myfaces/view/facelets/tag/CompositeTagDecorator.java and this "dependency" leeds to problems like: SEVERE: Error Loading decorator: oracle.adfinternal.view.faces.facelets.rich.AdfTagDecorator java.lang.ClassCastException: oracle.adfinternal.view.faces.facelets.rich.AdfTagDecorator cannot be cast to org.apache.myfaces.view.facelets.tag.TagDecorator at org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.loadDecorators(FaceletViewDeclarationLanguage.java:1645) at org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.createCompiler(FaceletViewDeclarationLanguage.java:1286) at org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.initialize(FaceletViewDeclarationLanguage.java:1617) at org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguage.<init>(FaceletViewDeclarationLanguage.java:238) at org.apache.myfaces.view.facelets.FaceletViewDeclarationLanguageStrategy.<init>(FaceletViewDeclarationLanguageStrategy.java:52) at org.apache.myfaces.view.ViewDeclarationLanguageFactoryImpl.initialize(ViewDeclarationLanguageFactoryImpl.java:106) at org.apache.myfaces.view.ViewDeclarationLanguageFactoryImpl.getViewDeclarationLanguage(ViewDeclarationLanguageFactoryImpl.java:79) at org.apache.myfaces.trinidadinternal.application.ViewDeclarationLanguageFactoryImpl.getViewDeclarationLanguage(ViewDeclarationLanguageFactoryImpl.java:77) at org.apache.myfaces.application.ViewHandlerImpl.getViewDeclarationLanguage(ViewHandlerImpl.java:136) -- Matthias Wessendorf blog: http://matthiaswessendorf.wordpress.com/ sessions: http://www.slideshare.net/mwessendorf twitter: http://twitter.com/mwessendorf