Class HiLoIdRepairUpgradeTask

  extended by com.atlassian.confluence.upgrade.AbstractUpgradeTask
      extended by com.atlassian.confluence.upgrade.upgradetask.HiLoIdRepairUpgradeTask
All Implemented Interfaces:
DatabaseUpgradeTask, UpgradeTask

public class HiLoIdRepairUpgradeTask
extends AbstractUpgradeTask
implements DatabaseUpgradeTask

POSITION is a key word as far as HSQLDB 1.8 is concerned. Hence we need to rename it. however not many databases support a SQL rename command, so our first attempt involved trying to drop the column and add a new one it turns out that we cannot remove the POSITION column because it is part of composite primary key (and with values in the table, dropping the column will cause duplicate entries in the remaining PK column) further, hibernate's schemaUpdate autocreates the ANCESTORPOSITION column as part of the upgrade but fails to create it as a primary key -- not sure know why. instead of fighting with database dialects and integrity errors, we concluded its best and easier to just rename the table and allow schemaUpdate to create a new one this upgrade task handles the removal of the old table and the triggers off a populating of the new.

Constructor Summary
HiLoIdRepairUpgradeTask(com.atlassian.event.EventManager eventManager)
Method Summary
 void doUpgrade()
          Perform the upgrade.
 String getBuildNumber()
 String getShortDescription()
          A short (<50 chars) description of the upgrade action
Methods inherited from class com.atlassian.confluence.upgrade.AbstractUpgradeTask
addAllErrors, addError, addError, getConstraint, getErrors, 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

Constructor Detail


public HiLoIdRepairUpgradeTask(com.atlassian.event.EventManager eventManager)
Method Detail


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


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

Specified by:
getShortDescription in interface UpgradeTask
getShortDescription in class AbstractUpgradeTask


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

Specified by:
doUpgrade in interface UpgradeTask

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