state transition diagram

基本解释

We extend the state-transition diagram with UML "Actor" notation to show the owner of the object when it is in that state.
我们使用 UML "Actor" 符号来扩展状态转换关系图，以显示当处于该状态时对象的所有者。
This is actually a state-transition diagram in which each valid state is well-defined, and a specific activity has to be performed in order to move from one state to the next.
这实际上是一个状态转换图，其中定义了所有有效状态，为了从一个状态转移到下一个状态，必须执行特定的活动。
We will need an implementation that extends org.apache.struts.action.Action for each of the actions identified in our state transition diagram and defined in struts-config.xml.
对于在状态转换图中标出的并在 struts-config.xml 中定义的每个操作，我们需要一个继承 org.apache.struts.action.Action 的实现。