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Webmaster Forum / ColdFusion / Advanced Techniques / September 2007Java Class problem after replacing with new Class
Hi, I made a java class on an ColdFusion 7.02 server (linux red hat 3.2) At first it worked perfectly. Then I made a new version with some extra methods, replaced it, restarted the service and clearing the cache. But still it doesn't find any of the new methods, but it does find the old ones. What can I do? > Hi, > [quoted text clipped - 3 lines] > service and clearing the cache. But still it doesn't find any of the new > methods, but it does find the old ones. What can I do? If you want to make sure that your new class gets loaded you better restart your application (at least) or maybe even CF server (process, not necessarily the machine). Is this a multie-server installation? If so, have you tried re-starting all JRun instances? When all else fails, trying rebooting perhaps? Also, you might want to look into the "Save Class Files" setting in the CFadmin (under caching) - not sure if its relevent to your situation or not. In fact, you might want to "play" with all of the cache settings. Eventually you will narrow down the configuration setting that is causing these headaches. All else did fail. They're going to reboor later this day. Tomorrow I will see if it worked. All else did fail. They're going to reboot later this day. Tomorrow I will see if it worked. > Hi, > [quoted text clipped - 3 lines] > service and clearing the cache. But still it doesn't find any of the new > methods, but it does find the old ones. What can I do? 1) Restart the application, objects are often cached on application or session level. 2) Restart the CF server (process, not the machine) Even rebooting did not help. What can be wrong? > Even rebooting did not help. > What can be wrong? If even rebooting did not help, then the only option is - you did not save it in correct place. Check and re-check that you saved the source and compiled the class to correct destination. If the correct source and correct class are in place it will work, I am talking about the source AND class because if you saved the source in the wrong place you may be re-compiling old source to generate new class, and equally you may be re-compiling new source to generate new class in wrong location... Check both... De- compile the class from correct location or use reflection to check what it is. Is there any way you can verify the version of the .class file on the server? Perhaps human error? How are you accessing and using the class? Care to post some code snippets? > Then I made a new version with some extra methods, replaced it, restarted the > service and clearing the cache. But still it doesn't find any of the new > methods, but it does find the old ones. What can I do? don't know how linux handle things but under windows you'd have to stop the cf server service in order to replace a jar/class like that. might this have happened? are you sure you were able to physically replace the old class file? I solved the problem by making a complete new Class and calling that one with cfobject. > I solved the problem by making a complete new Class and calling that one with cfobject. So, now you have two copies of the same object. Very useful for further maintenance... And it did not solve the original problem... Let us know when you forget why you did that in the first place and start asking questions why your same object behaves differently in different contents. |
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