Package de.xima.fc.common.store.versioned

Interface IResourceStoreManager.IVersionedResourceStoreWithLoaderBase<Key,Value>

Type Parameters:

Key - The type of the key.

Value - The type of the derived value.

All Superinterfaces:

IResourceStoreManager.IVersionedResourceStoreBase<Key,Value>

All Known Subinterfaces:

IResourceStoreManager.IVersionedResourceStoreWithLoader<Key,Value>, IResourceStoreManager.IVersionedResourceStoreWithLoaderAndVersionExtractor<Key,Value>

Enclosing interface:

IResourceStoreManager

public static interface IResourceStoreManager.IVersionedResourceStoreWithLoaderBase<Key,Value>
extends IResourceStoreManager.IVersionedResourceStoreBase<Key,Value>

Same as IResourceStoreManager.IVersionedResourceStore, but with a bound loader that does not need to be specified each time when requesting a value for a key.

You can also bind a version extractor, so that you do not have to specify the version each time you wish to obtain a value for a key.

Since:

8.3.0

Author:

XIMA MEDIA GmbH

Method Summary

Modifier and Type	Method	Description
Value	computeIfAbsent(Key key, Object version)	Gets the value for the given key.

Methods inherited from interface de.xima.fc.common.store.versioned.IResourceStoreManager.IVersionedResourceStoreBase

computeIfAbsent, getIfPresent, remove, removeAndGetIfPresent

Method Detail

computeIfAbsent

Value computeIfAbsent(Key key,
                      Object version)
               throws IOException

Gets the value for the given key. The version controls whether the value is still valid. If the version is different from the stored version of the file, the value is considered stale. Stales values are discarded and reloaded using the bound loader.

Parameters:

key - The key for which to get the value.

version - The version of key.

Returns:

The associated value, either from the store if still fresh, or obtained from the bound loader.

Throws:

IOException - If the loader throws an exception.