com.atlassian.confluence.upgrade.upgradetask

Class SynchronyEvictionEventsPreSchemaUpgradeTask

java.lang.Object

com.atlassian.confluence.upgrade.AbstractUpgradeTask

com.atlassian.confluence.upgrade.upgradetask.SynchronyEvictionEventsPreSchemaUpgradeTask

All Implemented Interfaces:

BackupSupport, DatabaseUpgradeTask, UpgradeTask, UpgradeTaskInfo, org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanNameAware

public class SynchronyEvictionEventsPreSchemaUpgradeTask
extends AbstractUpgradeTask
implements DatabaseUpgradeTask

We drop synchrony tables and then recreate them from scratch instead of truncating because of the Hibernate bug that can't alter existing quoted tables.

https://hibernate.atlassian.net/browse/HHH-12106

Since:

7.0.0

Field Summary

Fields inherited from interface com.atlassian.confluence.upgrade.UpgradeTask

log

Constructor Summary

Constructors

Constructor and Description
SynchronyEvictionEventsPreSchemaUpgradeTask(DdlExecutor ddlExecutor, com.atlassian.config.db.HibernateConfig config)

Method Summary

Modifier and Type	Method and Description
boolean	breaksBackwardCompatibility() Returns true if a new export can't be imported in an older instance.
void	doUpgrade() Perform the upgrade.
String	getBuildNumber()
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, getShortDescription, 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, getShortDescription, isDatabaseUpgrade

Constructor Detail

SynchronyEvictionEventsPreSchemaUpgradeTask

public SynchronyEvictionEventsPreSchemaUpgradeTask(DdlExecutor ddlExecutor,
                                                   com.atlassian.config.db.HibernateConfig config)

Method Detail

runOnSpaceImport

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:

• A task updating macro names in the BodyContent table would be blocking.
• Tasks which updates data related to the space would be blocking.
• A task upgrading the user table wouldn't be blocking.
• Adding a mandatory column on space-related content breaks space import

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

breaksBackwardCompatibility

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:

• A destructive operation (Some data is replaced by another) breaks backwards compatibility
• Adding a optional column does NOT break backwards compatibility
• Data is copied to another column doesn't breaks backwards compatibility
• A build number incrementation doesn't breaks backwards compatibility

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

getBuildNumber

public String getBuildNumber()

Specified by:

getBuildNumber in interface UpgradeTaskInfo

Overrides:

getBuildNumber in class AbstractUpgradeTask

Returns:

The build number that this upgrade is applicable to

doUpgrade

public void doUpgrade()
               throws Exception

Description copied from interface: UpgradeTask

Perform the upgrade.

Specified by:

doUpgrade in interface UpgradeTask

Throws:

Exception