Hi
I think u can try something like this
public class Cache
{
private static HashMap dataStore = new HashMap();
static
{
//retreive the data previously persisted in the disk
}
public static Object retreiveData(String key)
{
......
}
public static void storeData(String key, Object value)
{
..............
}
}
this class can be used for storing and retreiving data and it is not a bean
-- so the ejb container won't do anything with it. You can also persist the
data in hard disk(given that the data objects stored is serializable) at
regular time intervals.
cheers
Anamitra
-----Original Message-----
From: Edward Barrett [mailto:[EMAIL PROTECTED]]
Sent: Friday, July 14, 2000 8:10 AM
To: [EMAIL PROTECTED]
Subject: 'static' data in EJB architecture
I have a requirement to have data stored in a database which will be
accessed from numerous session beans and servlets (it is the data that
controls the flow of the application, but could easily be a list of valid
choices, etc.).
Ideally, I would like to be able to implement a class that resides in the
server for the length of the server instance's runtime, but which also has a
way of being 'refreshed'.
I thought about stateless session beans which, upon their creation obtained
the data and cached locally. Can I configure my server so that there are a
minimum number of beans and so they stay resident ? Can the server still
passivate the bean and therefore wipe the data ?
For the 'refresh' functionality, is there a manner to issue a message to all
the stateless session beans to notify them to refresh ?
Is there another design for this requirement ?
As always, TIA
Ed
PS How do I find the archive for this mailing list ? Also, to which URL
does one go to register for the list ?
------------------------------------------------------------------------
Graham Parsons
Reflective Solutions Limited, London, UK
Tel: 07976 150940 E-mail: [EMAIL PROTECTED]
http://www.reflective.co.uk
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