Regarding JavaBeans having to be Serializable, <slaps-forehead/>, I guess it's good to be reminded that I don't know everything :-).
Regarding ActionForm -- having the base class declare "implements Serializable" (or "implements Externalizable") is necessary but not sufficient for serialization to actually succeed. It must also be the case that the classes for your instance variables must also be successfully serializable, along with any instance variables of those classes, and so on ... Craig On Fri, 18 Oct 2002, Ted Husted wrote: > Date: Fri, 18 Oct 2002 18:08:29 -0400 > From: Ted Husted <[EMAIL PROTECTED]> > Reply-To: Struts Developers List <[EMAIL PROTECTED]>, > [EMAIL PROTECTED] > To: Struts Developers List <[EMAIL PROTECTED]> > Subject: Re: RE: WHY! Won't Form Classes Load > > The strange part is that ActionForm does claim to implement serializable. > > http://jakarta.apache.org/struts/api/org/apache/struts/action/ActionForm.html > > Carlos, did you do anything except respecify the implements clause? > > -Ted. > > 10/18/2002 5:32:01 PM, "Ditlinger, Steve" <[EMAIL PROTECTED]> wrote: > > > > >Sometimes I hate being a stickler... > > > >Section 5.5 of the JavaBeans Spec > >(http://java.sun.com/products/javabeans/docs/beans.101.pdf)..... > > > >Summary of persistence > >All beans must support either Serialization or Externalization. > >It is always valid for an application to save and restore the state of a > >bean using the Java Serialization > >APIs. (The serialization APIs handle both Serializable and Externalizable > >objects.) > >A tool may also use generated code to restore the state of a bean unless the > >bean has specified > >the "hidden-state" attribute, in which case the bean must be saved and > >restored with serialization > >and/or externalization. > > > >So I think the short answer is yes, in order to be a full-fledged JavaBean, > >you must implement Serializable (or its subinterface Externalizable), > >although the spec does seem to leave room for implementing some other custom > >mechanism in tools (like an IDE). > > > >Steve > > > >-----Original Message----- > >From: Craig R. McClanahan [mailto:craigmcc@;apache.org] > >Sent: Friday, October 18, 2002 2:03 PM > >To: Struts Developers List; [EMAIL PROTECTED] > >Subject: RE: WHY! Won't Form Classes Load > > > > > > > > > >On Fri, 18 Oct 2002, edgar wrote: > > > >> Date: Fri, 18 Oct 2002 17:03:32 -0400 > >> From: edgar <[EMAIL PROTECTED]> > >> Reply-To: Struts Developers List <[EMAIL PROTECTED]>, > >> [EMAIL PROTECTED] > >> To: 'Struts Developers List' <[EMAIL PROTECTED]> > >> Subject: RE: WHY! Won't Form Classes Load > >> > >> Isn't a requirement that beans be serializable anyway? > >> > > > >Not in the general sense of JavaBeans (although it is not uncommon). > >There are some circumstances where serializability is required (such as a > >value object being passed back and forth to an EJB). > > > >> Edgar > > > >Craig > > > > > >-- > >To unsubscribe, e-mail: <mailto:struts-dev-unsubscribe@;jakarta.apache.org> > >For additional commands, e-mail: <mailto:struts-dev-help@;jakarta.apache.org> > > > > > >-- > >To unsubscribe, e-mail: <mailto:struts-dev-unsubscribe@;jakarta.apache.org> > >For additional commands, e-mail: <mailto:struts-dev-help@;jakarta.apache.org> > > > > > > > > > > > -- > To unsubscribe, e-mail: <mailto:struts-dev-unsubscribe@;jakarta.apache.org> > For additional commands, e-mail: <mailto:struts-dev-help@;jakarta.apache.org> > > -- To unsubscribe, e-mail: <mailto:struts-dev-unsubscribe@;jakarta.apache.org> For additional commands, e-mail: <mailto:struts-dev-help@;jakarta.apache.org>
