local.tomas.util.versioning
Class VersionHandlerBase

java.lang.Object
  local.tomas.util.versioning.VersionHandlerBase

All Implemented Interfaces:

VersionHandler

public abstract class VersionHandlerBase
extends Object
implements VersionHandler

Default base class for version handlers.

Author:

Teubner

Constructor Summary

protected

VersionHandlerBase() Default constructor.

Method Summary

String	getCurrentVersion(String name) Get current version.
VersionInitializer	getInitializer(String name, VersionInterface vi) Get initializer for version interface.
VersionUpdater	getUpdater(String name, VersionInterface vi) Get updater for version interface.
void	updateOrInitialize(String name, VersionInterface vi) Update to new version or initialize if none can be found.

Methods inherited from class java.lang.Object

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

Constructor Detail

VersionHandlerBase

protected VersionHandlerBase()

Default constructor.

Method Detail

getCurrentVersion

public String getCurrentVersion(String name)
                         throws VersionException

Get current version. The version is retrieved from a property resource. The name of the property resource is the name of this subclass of the VersionHandlerBase plus the extension .properties.

Specified by:

getCurrentVersion in interface VersionHandler

Parameters:

name - the property name

Returns:

current version

Throws:

VersionException

updateOrInitialize

public void updateOrInitialize(String name,
                               VersionInterface vi)
                        throws VersionException

Update to new version or initialize if none can be found.

Parameters:

name - entity name

vi - version interface

Throws:

VersionException

getInitializer

public VersionInitializer getInitializer(String name,
                                         VersionInterface vi)

Description copied from interface: VersionHandler

Get initializer for version interface.

Specified by:

getInitializer in interface VersionHandler

Parameters:

name - entity name

vi - version entity container

Returns:

empty initializer (does nothing)

getUpdater

public VersionUpdater getUpdater(String name,
                                 VersionInterface vi)

Description copied from interface: VersionHandler

Get updater for version interface.

Specified by:

getUpdater in interface VersionHandler

Parameters:

name - entity name

vi - version entity container

Returns:

empty updater (does nothing)