Package com.atlassian.jira.upgrade

Interface Summary
BuildVersionRegistry Resolves build numbers to versions of JIRA.
BuildVersionRegistry.BuildVersion Simple result object for representing the build number and version together.
UpgradeHistoryItem Simple representation of an upgrade performed in history.

Class Summary
BuildVersionImpl Simple implementation of BuildVersionRegistry.BuildVersion
ConnectionKeeper This class is used to keep connections open to the database while JIRA is running.
ConsistencyCheckImpl The consistency checker runs every time the web app is reloaded, and checks JIRA's consistency (duh ;))

At the moment it just looks to check that certain Listeners are loaded, but in the future it can check the consistency of data etc.

DefaultBuildVersionRegistry Default implementation which looks up the known versions from the file
LogEvent Event subclass that intercepts the Event.setProgress(int) in order to provide some status to the log file (using log4j).
PluginSystemLauncher Starts the JIRA plugins system with ALL available plugins
PluginUpgradeLauncher Issues a JiraStartedEvent to launch the Jira Plugin upgrade task
UpgradeLauncher Tests if an upgrade is necessary, and performs it.
UpgradeTask.Status Track status of a task this session, if isTaskDone(String) returns true you don't need to do it again.

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