de.schwarzrot.data.access.support
Class EntityEnumResolver

java.lang.Object
  de.schwarzrot.data.access.support.EntityEnumResolver

All Implemented Interfaces:

LabeledEnumResolver

public class EntityEnumResolver
extends Object
implements LabeledEnumResolver

an enum-resolver class, that uses catalog/EntityManager to interface persistence and: - is designed as singleton, to be useful, where application services are not accessible - caches the enums - uses StaticLabeledEnumResolver as fallback for enums, that are not enitities - has a refresh()-call to reload the internal cache

Author:

Reinhard Mantey

Constructor Summary

EntityEnumResolver()

Method Summary

protected void	checkEnumCache4Type(Class clazz) internal call to load enums of given type, if they are not already found in cache.
StaticLabeledEnumResolver	getFallback()
LabeledEnum	getLabeledEnumByCode(Class clazz, Comparable code)
LabeledEnum	getLabeledEnumByLabel(Class clazz, String label)
Map	getLabeledEnumMap(Class clazz)
Set	getLabeledEnumSet(Class clazz)
static EntityEnumResolver	instance()
static void	refresh() as this class is intended to handle enums, that a user may extend, a call to refresh the cache(s) is evident.
void	setFallback(StaticLabeledEnumResolver fallback)

Methods inherited from class java.lang.Object

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

Constructor Detail

EntityEnumResolver

public EntityEnumResolver()

Method Detail

getFallback

public final StaticLabeledEnumResolver getFallback()

getLabeledEnumByCode

public LabeledEnum getLabeledEnumByCode(Class clazz,
                                        Comparable code)
                                 throws IllegalArgumentException

Specified by:

getLabeledEnumByCode in interface LabeledEnumResolver

Throws:

IllegalArgumentException

getLabeledEnumByLabel

public LabeledEnum getLabeledEnumByLabel(Class clazz,
                                         String label)
                                  throws IllegalArgumentException

Specified by:

getLabeledEnumByLabel in interface LabeledEnumResolver

Throws:

IllegalArgumentException

getLabeledEnumMap

public Map getLabeledEnumMap(Class clazz)
                      throws IllegalArgumentException

Specified by:

getLabeledEnumMap in interface LabeledEnumResolver

Throws:

IllegalArgumentException

getLabeledEnumSet

public Set getLabeledEnumSet(Class clazz)
                      throws IllegalArgumentException

Specified by:

getLabeledEnumSet in interface LabeledEnumResolver

Throws:

IllegalArgumentException

setFallback

public final void setFallback(StaticLabeledEnumResolver fallback)

checkEnumCache4Type

protected void checkEnumCache4Type(Class clazz)

internal call to load enums of given type, if they are not already found in cache.

Parameters:

clazz - - class of enums that should be loaded

instance

public static final EntityEnumResolver instance()

refresh

public static void refresh()

as this class is intended to handle enums, that a user may extend, a call to refresh the cache(s) is evident.