At 14:02 10.01.01 , you wrote:
>I have a question about application server cache.
>The question is as follows:
>
> If cached rows have been modified by some other tools or dba other than
>app server, can application server can detect the change and refresh cached
>rows with lastest data?
I'm assuming you don't want a general but an orion-specific answer. simple
answer: no
you either set a timeout for the validity of your cached data or you
specify that the server should not cache at all (for both see dtds for
orion-ejb-jar.xml).
HTH
robert
>Jinpeng
>
>
>-----Original Message-----
>From: Tony Wilson [mailto:[EMAIL PROTECTED]]
>Sent: Saturday, January 06, 2001 10:55 AM
>To: Orion-Interest
>Subject: RE: ResultSet Caching
>
>
>They can be used either as a replacement for en entity bean, or in most
>cases, the method in which the Entity bean is saved.
>
>If you don't need the overhead of EJB, or if you want finer control over
>what gets done when, or if you want to do multithreaded programming, these
>products help a lot.
>
>We like them, and they are worth taking a look at.
>
>Tony
>
>-----Original Message-----
>From: Neal Kaiser
>To: Orion-Interest
>Sent: 1/5/01 1:17 PM
>Subject: RE: ResultSet Caching
>
>What's the benefit of using those products over an entity bean then? How
>does it differ?
>Thanks.
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED]]On Behalf Of Tony Wilson
> > Sent: Friday, January 05, 2001 3:50 PM
> > To: Orion-Interest
> > Subject: RE: ResultSet Caching
> >
> >
> > There are products that act as middlemen between you and the
> > Database. They
> > also offer database object abstraction (so you can have an object
> > representing table data. You define field -> property mappings, and
>the
> > product handles the transfer of data.)
> >
> > These products usually have built-in caching.
> >
> > Two products are
> > TopLink (expensive, but nice) http://www.objectpeople.com
> > VBSF (pretty inexpensive, and still nice) http://www.objectmatter.com
> >
> > -----Original Message-----
> > From: Neal Kaiser [mailto:[EMAIL PROTECTED]]
> > Sent: Friday, January 05, 2001 10:49 AM
> > To: Orion-Interest
> > Subject: ResultSet Caching
> >
> > Does Orion have any built in caching functionality?
>Let's
> > say I have a
> > database query which returns 1,000 records and the user
>will
> > page thru 100
> > at a time. Instead of re-issuing the query each time
>(each
> > page), is there
> > some sort of cache object? How do you guys typically
>handle
> > this?
> >
> > Thanks, Neal
> >
> >
>
(-) Robert Krüger
(-) SIGNAL 7 Gesellschaft für Informationstechnologie mbH
(-) Brüder-Knauß-Str. 79 - 64285 Darmstadt,
(-) Tel: 06151 665401, Fax: 06151 665373
(-) [EMAIL PROTECTED], www.signal7.de
