Class LikesDanglingFKCleanupUpgradeTask

  extended by com.atlassian.confluence.upgrade.AbstractUpgradeTask
      extended by com.atlassian.confluence.upgrade.upgradetask.LikesDanglingFKCleanupUpgradeTask
All Implemented Interfaces:
BackupSupport, DatabaseUpgradeTask, UpgradeTask, UpgradeTaskInfo, org.springframework.beans.factory.BeanNameAware

public class LikesDanglingFKCleanupUpgradeTask
extends AbstractUpgradeTask
implements DatabaseUpgradeTask

Previously likes on comments were not deleted when the parent page was removed. This left dangling foreign keys from the likes table to the content table, see CONFDEV-12298 It runs pre hibernate schema upgrade as we have remapped the contentid property, and so this task needs to remove any dangling foreign keys before hibernate introduces the foreign key constraint. It doesn't run in the import tasks as the ReflectiveObjectPersister handles the upgrade of the property in its upgradeProperty method, and doesn't import if the contentEntityObject is missing.

Field Summary
Fields inherited from interface com.atlassian.confluence.upgrade.UpgradeTask
Constructor Summary
LikesDanglingFKCleanupUpgradeTask(net.sf.hibernate.SessionFactory sessionFactory)
Method Summary
 boolean breaksBackwardCompatibility()
          Returns true if a new export can't be imported in an older instance.
 void doUpgrade()
          Perform the upgrade.
 String getBuildNumber()
 String getShortDescription()
          A short (<50 chars) description of the upgrade action
 boolean runOnSpaceImport()
          Returns true if an older Space can't be imported in a new instance without running this task.
Methods inherited from class com.atlassian.confluence.upgrade.AbstractUpgradeTask
addAllErrors, addError, addError, getConstraint, getErrors, getName, isDatabaseUpgrade, setBeanName, setBuildNumber, validate
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface com.atlassian.confluence.upgrade.UpgradeTask
getConstraint, getErrors, validate
Methods inherited from interface com.atlassian.confluence.upgrade.UpgradeTaskInfo
getName, isDatabaseUpgrade

Constructor Detail


public LikesDanglingFKCleanupUpgradeTask(net.sf.hibernate.SessionFactory sessionFactory)
Method Detail


public void doUpgrade()
               throws Exception
Description copied from interface: UpgradeTask
Perform the upgrade.

Specified by:
doUpgrade in interface UpgradeTask


public String getBuildNumber()
Specified by:
getBuildNumber in interface UpgradeTaskInfo
getBuildNumber in class AbstractUpgradeTask
The build number that this upgrade is applicable to


public String getShortDescription()
Description copied from interface: UpgradeTaskInfo
A short (<50 chars) description of the upgrade action

Specified by:
getShortDescription in interface UpgradeTaskInfo
getShortDescription in class AbstractUpgradeTask


public boolean runOnSpaceImport()
Description copied from interface: BackupSupport
Returns true if an older Space can't be imported in a new instance without running this task. For example:

Note that tasks don't run on space import yet, so we just reject the import in this case.

Specified by:
runOnSpaceImport in interface BackupSupport


public boolean breaksBackwardCompatibility()
Description copied from interface: BackupSupport
Returns true if a new export can't be imported in an older instance. Breaking compatibility means a snapshot of the new version will not work at all with the previous version. For example: The best way to test is whether a newer export can be imported (with fully working features) in an older instance.

Specified by:
breaksBackwardCompatibility in interface BackupSupport

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