> Yeah this is a familiar problem, which essentially comes down to the fact > that while Cayenne has all the info for change tracking, the API to use it > is somewhat complex. In Cayenne 3.1 we provide a better way (that we still > need to document), based on lifecycle events and a few extensions in > cayenne-lifecycle.jar. So here is how you might approach it:
Thank you for your example. I've seen lifecycle mentioned somewhere before but I didn't know how to use it. Well, I still don't know how to get these two lines into my tapestry app where everything is inversion of control: > runtime.getDataDomain().getEntityResolver().getCallbackRegistry().addListener(new > LastModifiedListener()); > runtime.getDataDomain().addFilter(new ChangeSetFilter()); I use tapestr5-cayenne so I simply put a dependency in my pom.xml and use it like e. g. @Inject ObjectContextProvider provider The only class in the TapestryCayenneModule that uses a private field ServerRuntime is DataContextProviderImpl (implements ObjectContextProvider), a service that gets not only bound but also overridden in TapestryCayenneModule, so that I can't override it in my own AppModule.java (where I could add those two lines from your example). :( Just to make sure I'm not mistaken: runtime in your example is ServerRuntime and there should be only one runtime? I need to get the runtime that is used in the TapestryCayenneModule where my Cayenne contexts are coming from? I also tried to use the Cayenne Modeler to add the listener, but it's only possible on the object entity level. Adding an entity-listener to the map.xml produced the warning that DataMap listeners are no longer supported. It would've solved only half of my problem anyway cause I need to add the filter, too. Guess I need to ask some questions on the tapestry mailing list next ... ;) BTW: Where could I find the schema for the map? The link on the cayenne website doesn't work: http://cayenne.apache.org/schema/3.0/modelMap.html --> Not Found Same for http://cayenne.apache.org/schema/3.0/modelMap.xsd -Bjello
