>>If a web app uses JDBC only, is the performance slower than Hibernate or
>>iBatis?
Pure JDBC is actually faster because there is no abstraction on top. IBATIS and
Hibernate (I use
both) rely on reflection to populate objects and reflection is 2x-10x slower
than direct Java
access. However, being actually faster (in nano or microseconds) doesn't look
much different from
a user's perspective. If you have extremely high performance requirements,
don't deal with
anything that does reflection - do straight SQL over JDBC.
Paul
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