We recently had a discussion with a user about the strange default setting of this system property which is "true"! This means that if the property is not set it will be interpreted as true.
While this is helpful when you are developing and/or are new to Riena it is awkward when you deploy your application because you then have to set this system property explicitly to "false" - uh!
I did a little bit of "research" and came up with the following solution.
The default value of the system property should be derived from the existence of the system property "osgi.dev" (see also http://help.eclipse.org/help32/topic/org.eclipse.platform.doc.isv/reference/misc/runtime-options.html). It will be set when started from within the Eclipse IDE.
If this property is set (non null) we assume development mode and thus the default value for "riena.development" will be "true". If it is not set (null) we assume "deploy mode".
This should mimic the current behavior with the advantage that "riena.development" has not to be explicitly set to "false" for the deployed application.