* ViewHandler.getViewDeclarationLanguage(javax.faces.context.FacesContext, java.lang.String), passing the
* viewId found by calling UIViewRoot.getViewId() on the UIViewRoot in the argument FacesContext.
*/
UIViewRoot view = context.getViewRoot();
Application application = context.getApplication();
ViewDeclarationLanguage vdl
= application.getViewHandler().getViewDeclarationLanguage(context, view.getViewId());
/*
* Obtain a reference to the composite component metadata for this composite component by calling
* ViewDeclarationLanguage.getComponentMetadata(javax.faces.context.FacesContext,
* javax.faces.application.Resource), passing the facesContext and componentResource arguments to this method.
* This version of JSF specification uses JavaBeans as the API to the component metadata.
*/
BeanInfo metadata = vdl.getComponentMetadata(context, componentResource);
if (metadata == null)
{
throw new FacesException("Could not get component metadata for "
+ componentResource.getResourceName()
+ ". Did you forget to specify <composite:interface>?");
}
/*
* Determine if the component author declared a component-type for this component instance by obtaining the
* BeanDescriptor from the component metadata and calling its getValue() method, passing
* UIComponent.COMPOSITE_COMPONENT_TYPE_KEY as the argument. If non-null, the result must be a ValueExpression
* whose value is the component-type of the UIComponent to be created for this Resource component. Call through
* to createComponent(java.lang.String) to create the component.
*/
BeanDescriptor descriptor = metadata.getBeanDescriptor();
ValueExpression componentType = (ValueExpression) descriptor.getValue(UIComponent.COMPOSITE_COMPONENT_TYPE_KEY);
boolean annotationsApplied = false;
if (componentType != null)
{
component = application.createComponent((String) componentType.getValue(context.getELContext()));
annotationsApplied = true;
}
else
{
/*
* Otherwise, determine if a script based component for this Resource can be found by calling
* ViewDeclarationLanguage.getScriptComponentResource(javax.faces.context.FacesContext,
* javax.faces.application.Resource). If the result is non-null, and is a script written in one of the
* languages listed in JSF 4.3 of the specification prose document, create a UIComponent instance from the
* script resource.
*/
resource = vdl.getScriptComponentResource(context, componentResource);
if (resource != null)
{
String name = resource.getResourceName();
String className = name.substring(0, name.lastIndexOf('.'));