Timeline for A simple web-app code - user registration. Is the layering ok?
Current License: CC BY-SA 3.0
12 events
| when toggle format | what | by | license | comment | |
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| Sep 20, 2016 at 7:38 | vote | accept | Koray Tugay | ||
| Apr 28, 2014 at 6:19 | comment | added | abuzittin gillifirca | You should invest some time and learn Spring Framework, even if you do not use it, it will make Java application architecture more clear. Also, you can get more detailed answers from programmers SE. Most of your questions are probably answered there already. | |
| Apr 26, 2014 at 15:13 | comment | added | Koray Tugay | @abuzittingillifirca Abuzittin, one question. What if I need to access the xyzService something that is not Servlet? | |
| Apr 22, 2014 at 6:22 | comment | added | abuzittin gillifirca | Of course, if you are doing this not to learn workings of the Servlet API, but to develop production systems; you can use a framework such as Spring and save yourself a lot of time. Also, after moving service etc out of your web layer, next in order is to move any passwords etc out of your application code, for example if they exist in DatabaseConnectionImpl`. Standard way to do it is using JNDI. See here for how it is done for Tomcat. Each servlet container has a way of doing this. | |
| Apr 21, 2014 at 17:14 | comment | added | Koray Tugay | @abuzittingillifirca Thanks. I will try this approach. | |
| Apr 20, 2014 at 19:44 | answer | added | JvR | timeline score: 2 | |
| Apr 18, 2014 at 13:31 | comment | added | abuzittin gillifirca |
You define a ServletContextListener in the web.xml. You create your services, factories etc in its contextInitialized method, and stick them into the ServletContext with setAttribute("some.prefix.xyzService", xyzService) etc. You can then get them back in the servlet with XyzService xyzService = (XyzService)(getServletContext().getAttribute("some.prefix.xyzService"));
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| Apr 18, 2014 at 12:49 | comment | added | Koray Tugay | @abuzittingillifirca I am not using any dependency injection container or anything else so how can I avoid new DatabaseConnectionImpl()? | |
| Apr 18, 2014 at 11:00 | comment | added | abuzittin gillifirca |
Short answer: You have new DatabaseConnectionImpl() and catch (SQLException e) in your servlet class, therefore your web layer is not separated from data access layer.
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| Apr 17, 2014 at 20:53 | answer | added | Eddie Curtis | timeline score: 3 | |
| Apr 17, 2014 at 20:30 | history | tweeted | twitter.com/#!/StackCodeReview/status/456892488393822208 | ||
| Apr 17, 2014 at 18:30 | history | asked | Koray Tugay | CC BY-SA 3.0 |