| Modifying @user.home location [message #481886] |
Mon, 24 August 2009 15:50 |
 Frank Kurzawa
Messages: 7
Registered: July 2009 |
Junior Member |
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When an RCP app detects that it is in a read-only/server environment, it
writes configuration information to @user.home.
According to the documentation, @user.home is simply taken from the
System.property "user.home". In a windows XP environment (for example),
this would be something like "C:\Documents and Settings\<user name>".
We need to modify this behavior so that in a read-only environment, the
configuration information is written elsewhere (but with no change to
behavior in a local, non-read-only, installation).
I've concluded this can't be done with simple config.ini modification b/c
keys such as "osgi.configuration.area" end up applying in both the
read-only and non-read-only situation.
So it seemed that simply redefining the user.home java property at startup
could be an elegant solution.
I implemented a tiny plugin that simply redefines the user.home java
property in it's start method, and I set up config.ini to start it early.
I've verified that it does in fact modify the jvm user.home property, but
apparently I have not gotten it to run early enough in the startup process
to redefine rcp behavior: configuration information is still being written
to the older user.home location.
So here are my questions:
1. Is there a more straightforward way to redirect the location of
configuration information in the read-only/server case w/o changing
behavior in the local-install case?
2. If I am on the right track, how can I get my plug-in to run earlier
than it already is? (Or am I on a fool's errand w/ this approach?)
Right now, my config.ini includes the following:
osgi.bundles=com.MYAPP.startup@1:start,org.eclipse.equinox.common@2:start,org.eclipse.update.configurator@3:start,org.eclipse.core.runtime@start
Thanks in advance,
Frank
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