dk.heick.caching.persistences.file.serializable

Class DefaultFilenameSerializableFileValueManager<V extends Serializable>

java.lang.Object

dk.heick.caching.persistences.AbstractPersistenceValueManager<K,V>

dk.heick.caching.persistences.file.AbstractFileValueManager<String,V>

dk.heick.caching.persistences.file.AbstractFilenameFileValueManager<V>

dk.heick.caching.persistences.file.serializable.DefaultFilenameSerializableFileValueManager<V>

Type Parameters:

V - the value type.

All Implemented Interfaces:

ValueManager<String,V>

public class DefaultFilenameSerializableFileValueManager<V extends Serializable>
extends AbstractFilenameFileValueManager<V>

This ValueManager will serialize and deserialize the value V to a file where the Key(K) is a String which is used as filename.
This requries that V implements Serializable.

Since:

1.0

Author:

Frederik Heick

See Also:

SerializableUtils.writeSerializableToFile(java.io.File, Serializable), SerializableUtils.readSerializableFromFile(java.io.File)

Constructor Summary

Constructors

Constructor and Description
DefaultFilenameSerializableFileValueManager(CachingDirectory cachingDirectory, PersistencesRestoreMethod persistencesRestoreMethod) Constructor

Method Summary

Modifier and Type	Method and Description
V	retrieveFileValue(DefaultFileValueWrapper<String,V> valueWrapper) Loads the value from the file in valueWrapper.
void	storeFileValue(DefaultFileValueWrapper<String,V> valueWrapper, String key, V value) This method shall the take the Value and stored it in a file given by the valueWrapper.

Methods inherited from class dk.heick.caching.persistences.file.AbstractFilenameFileValueManager

constructFile, flush, reconstructKey, retrieveValue, storeValue

Methods inherited from class dk.heick.caching.persistences.file.AbstractFileValueManager

cast, constructWrapper, getCachingDirectory, getFile, removeAll, removeValue, restore, updateExpireTime

Methods inherited from class dk.heick.caching.persistences.AbstractPersistenceValueManager

getLogger, getPersistencesRestoreMethod, isPersisted

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultFilenameSerializableFileValueManager

public DefaultFilenameSerializableFileValueManager(CachingDirectory cachingDirectory,
                                                   PersistencesRestoreMethod persistencesRestoreMethod)
                                            throws IllegalArgumentException,
                                                   NullPointerException

Constructor

Parameters:

cachingDirectory - the directory where to store the cached values.

persistencesRestoreMethod - the restore method, when reconstructing the LRUCachingMap.

Throws:

IllegalArgumentException - if cacheDirectory isnt a valid directory.

NullPointerException - if persistencesRestoreMethod or cachingDirectory is null.

Method Detail

storeFileValue

public void storeFileValue(DefaultFileValueWrapper<String,V> valueWrapper,
                           String key,
                           V value)
                    throws RuntimeException

Description copied from class: AbstractFilenameFileValueManager

This method shall the take the Value and stored it in a file given by the valueWrapper.

Specified by:

storeFileValue in class AbstractFilenameFileValueManager<V extends Serializable>

Parameters:

valueWrapper - the value wrapper which holds the file.

key - the key.

value - the value.

Throws:

RuntimeException - if the value can not be stored in the file.

retrieveFileValue

public V retrieveFileValue(DefaultFileValueWrapper<String,V> valueWrapper)

Description copied from class: AbstractFilenameFileValueManager

Loads the value from the file in valueWrapper.

Specified by:

retrieveFileValue in class AbstractFilenameFileValueManager<V extends Serializable>

Parameters:

valueWrapper - the value wrapper

Returns:

the value V.