在一个拥有多个持久性单元的场景中，可使用一个ldap样式过滤器根据持久性单元限制选择。
In a scenario with multiple persistence units, the selection can be constrained by persistence unit name using an LDAP style filter.
事件使用规范化的格式，让 WebSphere Sensor Events 服务器能够针对事件执行几种常见的服务，比如持久化和过滤。
The event is in a normalized form that enables the WebSphere Sensor Events server to perform several common services on the event, such as persistence and filtering.
当open Session in View模式作为过滤器或拦截器实现时，持久化上下文对象在视图呈现期间会保持打开状态。
When open Session in view is implemented as a filter or interceptor, the persistence-context object remains open during view rendering.
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