Applying lightweight local mode to an entity bean
WebSphere® Application Server provides a special operation mode called lightweight local mode, which can improve the performance of entity bean methods. You can decide which entity beans in your application to run in this mode.
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You can apply lightweight local mode to specific EntityBean types within your application with the Marker interface technique.
Marker interface technique
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Use the marker interface technique when a group of beans within the application is related through a common inheritance hierarchy, and all the beans in the hierarchy are to be marked. For an application with a large number of beans in a hierarchy, this technique is the most efficient.
To use a marker interface, code your bean implementation class to implement the com.ibm.websphere.ejbcontainer.LightweightLocal interface. The bean implementation class does not need to directly implement the interface; any parent class or interface can also implement it. For details, see the com.ibm.websphere.ejbcontainer package in the API section of the documentation.