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[Java新手区] Session Beans

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    2015-3-20 14:37
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    发表于 2017-7-20 20:53:06 | 显示全部楼层 |阅读模式
      Session Beans are used to represent Use-Cases or Workflow on behalf of a client. They represent operations on persistent data, not persistent data itself. There are two types of Session Beans, Stateless and Stateful. All Session Beans must implement the javax.ejb.SessionBean interface. The EJB Container governs the life of a Session Bean. If the EJB Container crashes, data for all Stateful Session Beans could be lost. Some high-end EJB Containers provide recovery for Stateful Session Beans.
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