com.atlassian.confluence.upgrade.upgradetask
Class HiLoIdRepairUpgradeTask

java.lang.Object
  com.atlassian.confluence.upgrade.AbstractUpgradeTask
      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

HiLoIdRepairUpgradeTask

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

Method Detail

getBuildNumber

public String getBuildNumber()

Specified by:

getBuildNumber in interface UpgradeTask

Overrides:

getBuildNumber in class AbstractUpgradeTask

Returns:

The build number that this upgrade is applicable to

getShortDescription

public String getShortDescription()

Description copied from interface: UpgradeTask

A short (<50 chars) description of the upgrade action

Specified by:

getShortDescription in interface UpgradeTask

Overrides:

getShortDescription in class AbstractUpgradeTask

doUpgrade

public void doUpgrade()
               throws Exception

Description copied from interface: UpgradeTask

Perform the upgrade.

Specified by:

doUpgrade in interface UpgradeTask

Throws:

Exception