com.levigo.jadice.demo.font.attribute

Interface FontAttributesCache<K extends Serializable,E extends Throwable>

Type Parameters:

K - type of font identifier

E - type of exception thrown in case of failure to retrieve the cached data

All Superinterfaces:

Provider<Collection<FontSource>,E>

All Known Implementing Classes:

FileFontAttributesCache

public interface FontAttributesCache<K extends Serializable,E extends Throwable>
extends Provider<Collection<FontSource>,E>

An interface providing the blueprint for FontAttributeSet cache implementations.

Method Summary

Modifier and Type	Method and Description
void	add(K identifier, FontAttributeSet attributes) Adds a pair of an identifier for a font and the FontAttributeSet for that font to the cache.
Map<K,FontAttributeSet>	getAllEntries() Get all entries which are currently stored in the cache
FontAttributeSet	getFontAttributesEntry(K identifier) Get the FontAttributeSet cached for the font identified by the given identifier
void	invalidateCache() Removes all entries from the cache.
void	remove(K identifier) Removes the FontAttributeSet for the font identified by the given identifier.
void	writeCache() Persists the cache.

Methods inherited from interface org.jadice.util.base.Provider

get

Method Detail

add

void add(K identifier,
         FontAttributeSet attributes)

Adds a pair of an identifier for a font and the FontAttributeSet for that font to the cache.

Parameters:

identifier - an object identifying the font.

attributes - the FontAttributeSet for the font to be added

remove

void remove(K identifier)

Removes the FontAttributeSet for the font identified by the given identifier. If there was no information stored for the given identifier nothing happens.

Parameters:

identifier - the identifier of the entry to remove the information for.

invalidateCache

void invalidateCache()

Removes all entries from the cache.

getAllEntries

Map<K,FontAttributeSet> getAllEntries()

Get all entries which are currently stored in the cache

Returns:

the current state of the Map containing all entries.

getFontAttributesEntry

FontAttributeSet getFontAttributesEntry(K identifier)

Get the FontAttributeSet cached for the font identified by the given identifier

Parameters:

identifier - The identifier of the font

Returns:

The FontAttributeSet for the font identified by the given identifier as stored in the cache.
null may be returned if either there is no entry for the identifier or if the FontAttributeSet for the font are null.

writeCache

void writeCache()
         throws Exception

Persists the cache.

Throws:

Exception - An Exception may be thrown if an error occurs while storing the data from the cache.