Saturday, December 27, 2008

hibernate -- essential techniques to SELECT query

* Technique: standard associations (m:1,m:n etc) -- You need not write the query to SELECT the "associated" objects. If you load Students and want the associated Course loaded, Hibernate automatically constructs the Course query based on the Course.hbm.xml.

* Technique: HQL -- You may need to write HQL to select students.

* Technique: views -- Completely outside and unknown to hibernate, you can implement complex SELECT in a view and mention its name in a hbm.xml file, as if it's a table.

* technique: native sql --

* technique: proc -- existing logic in proc? This would be the ultimate. most powerful and customized.

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