[cdi-dev] Proposal: Improve producer method signature capability by accepting qualifier annotations

CDI supports producer methods which accept the InjectionPoint as argument which allows to access all metadata to the injection point. The InjectionPoint approach adds a certain complexity which is not needed when only qualifier metadata has to be processed. I propose to allow annotation types within the producer method signatures. Code example for a use case: {code} @HttpParam("username") @Inject String username {code} {code} import javax.enterprise.inject.Produces; import javax.enterprise.inject.spi.InjectionPoint; class HttpParams @Produces String getParamValue(HttpParam httpParam) { ServletRequest request = (ServletRequest) FacesContext.getCurrentInstance().getExternalContext().getRequest(); return request.getParameter(httpParam.value()); // current support looks like: // String getParamValue(InjectionPoint ip) { // return request.getParameter(ip.getAnnotated().getAnnotation(HttpParam.class).value()); } } {code} Producer methods accepting qualifier annotations ensure to have always an annotation instance, this helps to prevent null pointer access since InjectionPoint.getAnnotated().getAnnotation(java.lang.Class<T>) may return null. Best regards, Mark -- PALUCH.biz Heckenpfad 14 // 69469 Weinheim T. 0 62 01/65 04 24-0 // F. 0 62 01/65 04 24-9 mpaluch(a)paluch.biz http://www.paluch.biz