sirius.biz.jdbc.storage

Class VersionManager

java.lang.Object

sirius.biz.jdbc.storage.VersionManager

public class VersionManager
extends Object

Responsible for managing and creating resized versions of objects.

This class also maintans the logicalToPhysicalCache which contains the physical keys for virtual objects. This is placed here, as the DownloadBuilder uses this class to fetch the physical keys for an object version (even for the main one).

Constructor Summary

Constructors

Constructor and Description
VersionManager()

Method Summary

Modifier and Type	Method and Description
protected void	clearCacheForVirtualObject(VirtualObject virtualObject) Clears the cache for a given VirtualObject.
protected sirius.kernel.commons.Tuple<VirtualObject,Map<String,String>>	fetchPhysicalObjects(DownloadBuilder downloadBuilder) Returns the targeted VirtualObject and its known physical objects for versions.
protected String	fetchVersion(sirius.kernel.commons.Tuple<VirtualObject,Map<String,String>> physicalObjects, String version) Fetches the pyhsical key for a version from the tuple retrieved via fetchPhysicalObjects(DownloadBuilder)

Methods inherited from class java.lang.Object

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

Constructor Detail

VersionManager

public VersionManager()

Method Detail

fetchPhysicalObjects

protected sirius.kernel.commons.Tuple<VirtualObject,Map<String,String>> fetchPhysicalObjects(DownloadBuilder downloadBuilder)

Returns the targeted VirtualObject and its known physical objects for versions.

Parameters:

downloadBuilder - the buider which specifies the key and bucket of the virtual object to resolve

Returns:

a tuple containing the virtual object and a map with all loaded physical keys for versions (not necessarily all that are available - as these are lazy loaded)

clearCacheForVirtualObject

protected void clearCacheForVirtualObject(VirtualObject virtualObject)

Clears the cache for a given VirtualObject.

Parameters:

virtualObject - the virtual object

fetchVersion

protected String fetchVersion(sirius.kernel.commons.Tuple<VirtualObject,Map<String,String>> physicalObjects,
                              String version)

Fetches the pyhsical key for a version from the tuple retrieved via fetchPhysicalObjects(DownloadBuilder)

Parameters:

physicalObjects - the map of already resolved keys

version - the version to resolve, see DownloadBuilder.withVersion(String) for possible values

Returns:

the physical key. If no version exists, a new one will be comouted and the main version will be used in the mean time