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ServeltContextListener for DataSource

Faisal Ahmad
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Joined: Aug 31, 2006
Posts: 340

While discussing about ServletContextListener, HFSJSP 2e says that it is used for initializing a DataSource. Is this a good approach? I've seen the DataSource objects are handled by the container itself. What is the best way?
Faisal Ahmad
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Joined: Aug 31, 2006
Posts: 340

Any suggestions?
J. Kevin Robbins
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Joined: Dec 16, 2010
Posts: 632
    
    7

My take on this is that it's a good way to do it because the datasource lookup only happens once. I've seen other code where the lookup happens over and over again which is a waste of resources. I've tried different ways of doing it and based on feedback that I received here, this is the context listener that I now use.



This is the DataSourceHolder class:

Suggestions for improving this are welcome.


"There is no reason for any individual to have a computer in his home" ~ Ken Olson, Co-founder of DEC, 1977
Dieter Quickfend
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Joined: Aug 06, 2010
Posts: 359
If you're using Java EE 6, there are many good ways, one of the good ways is contextInitialized, the easiest good way is @Resource.


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Singh Harmeet
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Joined: Aug 05, 2011
Posts: 115

is there also possible to initialize DataSource in context.xml file?


With Regards :-
Harmeet Singh
 
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