Package com.atlassian.confluence.impl.backuprestore.backup.exporters

Class SingleDependencyGenericExporter

java.lang.Object

com.atlassian.confluence.impl.backuprestore.backup.exporters.SingleDependencyGenericExporter

All Implemented Interfaces:

Exporter, Subscriber

public class SingleDependencyGenericExporter
extends Object
implements Exporter, Subscriber

Generic data exporter depends on another single entity type. That means that it can handle notifications from that entity and export its own records. For example, SpacePermissions entity type depends on Space entity type only. When the space is exported, this generic data exporter for SpacePermissions can export all permissions related to the export. This algorithm does not work for notification because notifications have references to a few other entity types, so notifications have to have their own custom data exporter. Note that simple entities (like users, labels etc) are ignored because they are dependant on other entities and they should not trigger export of other entities. Like, the user object will be exported if it is referenced, but no other entities monitor exporting users.

Since:

7.20.0

Field Summary

Fields

Modifier and Type	Field	Description
protected CommonDatabaseDataExporter	commonExporter
protected String	ENTITY_BY_ID_QUERY
protected Class<?>	monitoredClass

Constructor Summary

Constructors

Constructor	Description
SingleDependencyGenericExporter(CommonDatabaseDataExporter commonExporter, ExportableEntityInfo entityInfo, Set<Class<?>> simpleEntities)

Method Summary

Modifier and Type	Method	Description
protected String	buildQuery(ExportableEntityInfo entityInfo, Set<Class<?>> simpleEntities)
protected void	export(Collection<Object> objectIdList)
protected static List<HibernateField>	getAllExternalReferencesExceptSimpleOnes(ExportableEntityInfo entityInfo, Set<Class<?>> simpleEntities)
ExportableEntityInfo	getEntityInfo()	Returns default entity info for persister.
ExportableEntityInfo	getEntityInfo(Class<?> exportedClass)	Returns default entity info for the particular class.
protected Class<?>	getMonitoredClass(ExportableEntityInfo entityInfo, Set<Class<?>> simpleEntities)
Collection<Class<?>>	getWatchingEntityClasses()	Return a collection of entity classes that subscriber will monitor the object export events.
static boolean	isSuitableForExporter(ExportableEntityInfo entityInfo, Set<Class<?>> simpleEntities)	Returns true when the entity type has only one external reference (except references to the simple entities).
void	onMonitoredObjectsExport(Class<?> exportedClass, Collection<Object> idList)	It is called when the collection of objects was exported.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

commonExporter

protected final CommonDatabaseDataExporter commonExporter

monitoredClass

protected final Class<?> monitoredClass

ENTITY_BY_ID_QUERY

protected final String ENTITY_BY_ID_QUERY

Constructor Detail

SingleDependencyGenericExporter

public SingleDependencyGenericExporter(CommonDatabaseDataExporter commonExporter,
                                       ExportableEntityInfo entityInfo,
                                       Set<Class<?>> simpleEntities)

Method Detail

buildQuery

protected String buildQuery(ExportableEntityInfo entityInfo,
                            Set<Class<?>> simpleEntities)

getMonitoredClass

protected Class<?> getMonitoredClass(ExportableEntityInfo entityInfo,
                                     Set<Class<?>> simpleEntities)

isSuitableForExporter

public static boolean isSuitableForExporter(ExportableEntityInfo entityInfo,
                                            Set<Class<?>> simpleEntities)

Returns true when the entity type has only one external reference (except references to the simple entities).

getWatchingEntityClasses

public Collection<Class<?>> getWatchingEntityClasses()

Description copied from interface: Subscriber

Return a collection of entity classes that subscriber will monitor the object export events. This is called when DatabaseExporterHelper register subscribers for all exporters. See Use DatabaseExporterHelper.registerSubscriber(Subscriber)

Specified by:

getWatchingEntityClasses in interface Subscriber

getEntityInfo

public ExportableEntityInfo getEntityInfo()

Description copied from interface: Exporter

Returns default entity info for persister. Will fail if the persister has to work with multiple hibernate entitites.

Specified by:

getEntityInfo in interface Exporter

getEntityInfo

public ExportableEntityInfo getEntityInfo(Class<?> exportedClass)

Description copied from interface: Exporter

Returns default entity info for the particular class.

Specified by:

getEntityInfo in interface Exporter

getAllExternalReferencesExceptSimpleOnes

protected static List<HibernateField> getAllExternalReferencesExceptSimpleOnes(ExportableEntityInfo entityInfo,
                                                                               Set<Class<?>> simpleEntities)

onMonitoredObjectsExport

public void onMonitoredObjectsExport(Class<?> exportedClass,
                                     Collection<Object> idList)
                              throws InterruptedException,
                                     BackupRestoreException

Description copied from interface: Subscriber

It is called when the collection of objects was exported. This is called only for objects that this class is watching. See getWatchingEntityClasses()

Specified by:

onMonitoredObjectsExport in interface Subscriber

Parameters:

exportedClass - the exported class

idList - the list of ids of exported objects

Throws:

InterruptedException

BackupRestoreException

export

protected void export(Collection<Object> objectIdList)