[jbosstools-issues] [JBoss JIRA] (JBIDE-12826) Migrate existing preferences and project settings to new tooling

[Andre Dietisheim (JIRA)]

Andre Dietisheim created JBIDE-12826:
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             Summary: Migrate existing preferences and project settings to new tooling
                 Key: JBIDE-12826
                 URL: https://issues.jboss.org/browse/JBIDE-12826
             Project: Tools (JBoss Tools)
          Issue Type: Sub-task
          Components: openshift
    Affects Versions: 4.0.0.Alpha2
            Reporter: Andre Dietisheim
            Assignee: Andre Dietisheim
             Fix For: 4.0.0.Beta1


The new tooling (Beta1) now allows the user to use different servers which was not possible in prior releases. In prior releases the server that the tooling used was the server referenced in the express configurations (~/.openshift/express.conf and /etc/openshift/express.conf).
There are preferences and project settings that we used in prior tooling that were referring to connections. When referring these values were only using the username (since there was no notion of a server). In the new tooling we should now allow referring to a server. We should not break old settings though. To do so we forsee the following strategies:

* connection list (connection pool, that's also used by the OpenShift Explorer):
 The current key/values only use the username. Migration:
 * we keep the existing preference key/values
 * we create a new preference key
 * the connection pool is loading the old and new preferences
 * the connection pool is storing the connections that define connections to the default server to the old preferences

* Project settings:
 The current entry is using the username only. Migration:
 * we keep the existing entry
 * we add a new entry if the user uses a connection to a custom (non-default) server
 * we update the old entry if the user changes the username

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