Using DAO 's factory is right or not.... 2004-07-14 - By Manish Malhotra
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Hi All,
We have implemented the Data Access Object pattern to access the interact
with data base.
And to get the different DAO objects we used DAO factory.
Code snippet is like this:
public class CentralOverrideDAOFactory
{
/** Map to store object of different DAO's*/
private static Map daoMap = Collections.synchronizedMap(new HashMap());
/** final constant for bank */
private static final String BANK = "BANK";
/**
* This method returns the instance of BankOverrideDAO class from cached
map.
* If it is not available in map then it creates new instance and
returens
it.
*
* @(protected) BankOverrideDAO
*/
public static BankOverrideDAO getBankOverrideDAO()
{
BankOverrideDAO bankDAO = (BankOverrideDAO)daoMap.get(BANK);
if(bankDAO == null)
{
bankDAO = new BankOverrideDAO();
daoMap.put(BANK, bankDAO);
}
return bankDAO;
}
}
So, my issue is that we are marinating cache of DAO objects in the factory.
And using the same object for multiple request.
Our scenario is like this:
So, please give your suggestions regarding the performance issue.
regards,
Manish Malhotra
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