| Title: Persistent Object Lifecycle |
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| <P>A lifecycle of a persistent object can be represented as a number of states and transitions between them. These states are formally defined as "int" constants in <TT>org.objectstyle.cayenne.PersistenceState</TT> class. Transitions between states (see the diagram below) occur in response to the application interacting with either persistent objects or Cayenne context. Whenever a transition occurs, Cayenne automatically updates "persistenceState" property of all affected objects by calling <TT>setPersistenceState()</TT>.</P> |
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| <TABLE class="sectionMacro" border="0" cellpadding="5" cellspacing="0" width="100%"><TBODY><TR> |
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| <P>A new object state transformations:<BR> |
| <SPAN class="image-wrap" style=""><IMG src="persistent-object-lifecycle.data/new-persistent-object.png" style="border: 0px solid black"></SPAN></P></TD> |
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| <P>A feteched or committed object state transformations:<BR> |
| <SPAN class="image-wrap" style=""><IMG src="persistent-object-lifecycle.data/fetched-persistent-object.png" style="border: 0px solid black"></SPAN></P></TD></TR></TBODY></TABLE> |
