com.liferay.portal.kernel.upgrade
Interfaces 
UpgradeProcess.Alterable
UpgradeStep
Classes 
BaseReplacePortletId
BaseUpgradeAdminPortlets
BaseUpgradeCompanyId
BaseUpgradeLastPublishDate
BaseUpgradePortletId
BaseUpgradePortletPreferences
BaseUpgradeRepository
CamelCaseUpgradePortletPreferences
DummyUpgradeStep
RenameUpgradePortalPreferences
RenameUpgradePortletPreferences
UpgradeMVCCVersion
UpgradeProcess
Exceptions 
OlderVersionException
StagnantRowException
UpgradeException