I found what it was in the FAQ.
Apparently the sendRedrect does not stop the processing on the page. What
happens is that the process continues (until the end of the page, and the
output is discharged, but obviously the code executed on session's beans
cannot be rolled back!
I feel I can have my lunch now ;)
thank you all for the help,
mauro
ps
my code looked was
<jsp:useBean id="ureg" class="com.emsuk.UserRegistration"
scope="session" />
<%
if (ureg.createInDB()) {
ureg.setFormCurrent("");
response.sendRedirect("Succesful.html");
return;
else {
...
}
%>
...
<%
//defaul behaviour
ureg.setFormCurrent("UserRegistration");
%>
so that the property did not look like changed at!
> -----Original Message-----
> From: A mailing list about Java Server Pages specification and reference
> [mailto:[EMAIL PROTECTED]]On Behalf Of Mauro Gagni (EMS)
> Sent: 20 June 2000 12:11
> To: [EMAIL PROTECTED]
> Subject: Re: sendRedirect problem, loosing bean changes!?
>
>
> Paul,
> actually I don't re-reference it. I use it as it comes from the
> <jsp:usebean ../> tag.
> What I am wondering is how the sendRedirect works. Does it throws an
> exception? that 'could' explain why I loose all the changes I do
> to my bean.
> Otherwise what happens?
>
> > -----Original Message-----
> > From: A mailing list about Java Server Pages specification and reference
> > [mailto:[EMAIL PROTECTED]]On Behalf Of Matthews,Paul
> > Sent: 20 June 2000 11:28
> > To: [EMAIL PROTECTED]
> > Subject: Re: sendRedirect problem, loosing bean changes!?
> >
> >
> > Even if the scope is 'session' you will get that behaviour if you do
> > something like...
> >
> > <jsp:useBean id="myBean1" scope="session" class="blah.myBean"/>
> >
> > ..
> >
> > myBean1.setValue(200);
> > myBean1 = someBean.getMyBean();
> > myBean1.setValue(100);
> >
> > // value is now 100
> >
> > after the forward however, 'value' will be 200. Not looked at
> the compiled
> > JSP but would guess that the reference is being stored in the session at
> > instantiation. To get around it use some sort of copy method- ie
> >
> > myBean1.copy(someBean.getMyBean());
> >
> > Probably a better (proper?) way to do this.
> >
> > Paul
> >
> >
> >
> >
> >
> > > -----Original Message-----
> > > From: Lee Elenbaas [mailto:[EMAIL PROTECTED]]
> > > Sent: 20 June 2000 10:56
> > > To: [EMAIL PROTECTED]
> > > Subject: Re: sendRedirect problem, loosing bean changes!?
> > >
> > >
> > > make shore that your bean has the scope of session, this way
> > > it will be kept
> > > between requests.
> > > lee
> > > Lee Elenbaas
> > > ViryaNet
> > > [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
> > > http://www.viryanet.com/
> > >
> > >
> > > -----Original Message-----
> > > From: A mailing list about Java Server Pages specification
> > > and reference
> > > [mailto:[EMAIL PROTECTED]]On Behalf Of Mauro Gagni (EMS)
> > > Sent: Tuesday, June 20, 2000 12:11 PM
> > > To: [EMAIL PROTECTED]
> > > Subject: sendRedirect problem, loosing bean changes!?
> > >
> > >
> > > Hi all,
> > > I am having some troubles maintaining the changes of my bean
> > > done before a
> > > response.sendRedirect(). What happens is this:
> > > I have an if statement where I change a few parameters of my
> > > session bean
> > > i.e. mybean.setMyProperty("newValue") bean and then I
> > > sendRedirect() to the
> > > page I want. It apparently works fine because I get the page
> > > I request with
> > > the redirection, but my bean has lost the change in the
> > > property so if I do
> > > a .getMyProperty() I get "oldValue" and not what I expected
> > > ("newValue").
> > >
> > > Is this 'normal' or there is something that I am missing?
> > > please help me in undestanding what happens.
> > >
> > >
> > > TIA, mauro
> > >
> > > the sample code in my JSP page
> > >
> > > <jsp:useBean id="ureg" class="com.emsuk.UserRegistration"
> > > scope="session" />
> > >
> > > <%
> > > if (ureg.create()) {
> > > ureg.setFormCurrent("");
> > > response.sendRedirect("Succesful.html");
> > > else {
> > >
> > > ...
> > > }
> > > %>
>
> >
>
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> Some relevant FAQs on JSP/Servlets can be found at:
>
> http://java.sun.com/products/jsp/faq.html
> http://www.esperanto.org.nz/jsp/jspfaq.html
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>
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Some relevant FAQs on JSP/Servlets can be found at:
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http://www.esperanto.org.nz/jsp/jspfaq.html
http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
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