[ http://issues.apache.org/jira/browse/IBATIS-50?page=comments#action_12372015 ]
Chris Mathrusse commented on IBATIS-50: --------------------------------------- I don't want to bog down this discussion pertaining to whether or not this is a good idea. The reality is that it would be a nice to have and would solve a great many problems. I would like to be able to control how my POJO's are instantiated as I would like to have Spring manage my beans for me. This would give me the ability to, for example, have interceptors for each of my POJO's. Currently I am unable to do anything other than allow my Doa layer to handle some of the complexities that I want to implement. While this solution works for most of my problems it fails to address some of my more complex issues. > Ability to override the default bean creation mechanism > ------------------------------------------------------- > > Key: IBATIS-50 > URL: http://issues.apache.org/jira/browse/IBATIS-50 > Project: iBatis for Java > Type: Wish > Components: SQL Maps > Versions: 2.0.9 > Reporter: Philippe Laflamme > > Currently, iBatis is responsible for creating instances of classes used in > result maps. It relies on the assumption that objects can be obtained using > the Class.newInstance() method (or something equivalent). > The assumption forces users of the framework to create classes with a no-arg > default constructor. IMHO, this also has the effect of favoring > implementation inheritance (extends) over interface inheritance. > Although this is not a problem in most cases, the ability to plug in an > external instance factory would provide more flexibility and favor good > programming practices. Amongst other things, it would provide developers the > ability write code in terms of interface. > A simple solution is to provide an extension point where resultMap class > instances are obtained from. > The simplest form would be: > public interface InstanceFactory { > Object createInstance(Class resultMapClass); > } > The default implementation would do something along the lines of: > [...] > return resultMapClass.newInstance(); > [...] > Developers could configure iBatis to either use the default implementation or > their own custom implementation. The setting could be part of the > sqlMapConfig file or even per resultMap. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira
