Hibernate - What is Hibernate proxy?

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What is Hibernate proxy?

Total Answers and Comments: 3

Last Update: May 19, 2008 Asked by: Saurabh Jain

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Submitted by: arindam_0006in

Proxies are created dynamically by subclassing your object at runtime. The subclass has all the methods of the parent, and when any of the methods are accessed, the proxy loads up the real object from the DB and calls the method for you. Very nice in simple cases with no object hierarchy. Typecasting and instanceof work perfectly on the proxy in this case since it is a direct subclass.

Above answer was rated as good by the following members:
getravi2k, geeky920

July 12, 2007 14:58:40

rajneeshg

Member Since: July 2007 Contribution: 3

RE: What is Hibernate proxy?

Class can be mapped to a proxy instead to a table. When you actually call load on session it returns you proxy. This proxy may contain actual method to load the data.

May be used when you already some pre-existing code for persistence and you want to call it via Hibernate

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July 12, 2007 16:36:30

rajneeshg

Member Since: July 2007 Contribution: 3

RE: What is Hibernate proxy?

By default Hibernate creates a proxy for each of the class you map in mapping file. This class contain the code to invoke JDBC. This class is created by hibernate using CGLIB

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May 19, 2008 13:48:22

arindam_0006in

Member Since: August 2007 Contribution: 15

RE: What is Hibernate proxy?

Proxies are created dynamically by subclassing your object at runtime. The subclass has all the methods of the parent and when any of the methods are accessed the proxy loads up the real object from the DB and calls the method for you. Very nice in simple cases with no object hierarchy. Typecasting and instanceof work perfectly on the proxy in this case since it is a direct subclass.

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1 0

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