/**
* Get the enum value with the passed ID
*
* @param <ENUMTYPE> The enum type
* @param aClass The enum class
* @param nID The ID to search
* @param aDefault The default value to be returned, if the ID was not found.
* @return The default parameter if no enum item with the given ID is present.
*/
@Nullable
public static <ENUMTYPE extends Enum<ENUMTYPE> & IHasSimpleIntID> ENUMTYPE getFromIDOrDefault(
@Nonnull final Class<ENUMTYPE> aClass, final int nID, @Nullable final ENUMTYPE aDefault) {
ValueEnforcer.notNull(aClass, "Class");
final String sCacheKey = aClass.getName();
Object[] aCachedData;
s_aRWLockInt.readLock().lock();
try {
aCachedData = s_aIntCache.get(sCacheKey);
} finally {
s_aRWLockInt.readLock().unlock();
}
if (aCachedData == null) {
s_aRWLockInt.writeLock().lock();
try {
// Try again in write lock
aCachedData = s_aIntCache.get(sCacheKey);
if (aCachedData == null) {
// Create new cache entry
int nMinID = Integer.MAX_VALUE;
int nMaxID = Integer.MIN_VALUE;
for (final ENUMTYPE aElement : aClass.getEnumConstants()) {
final int nElementID = aElement.getID();
if (nElementID < nMinID) nMinID = nElementID;
if (nElementID > nMaxID) nMaxID = nElementID;
}
if (nMinID >= 0 && nMaxID <= CGlobal.MAX_BYTE_VALUE) {
// Cachable!
aCachedData = new Object[nMaxID + 1];
for (final ENUMTYPE aElement : aClass.getEnumConstants())
aCachedData[aElement.getID()] = aElement;
} else {
// Enum not cachable
aCachedData = NOT_CACHABLE;
}
s_aIntCache.put(sCacheKey, aCachedData);
}
} finally {
s_aRWLockInt.writeLock().unlock();
}
}
if (aCachedData != NOT_CACHABLE) {
if (nID < 0 || nID >= aCachedData.length) return aDefault;
return GenericReflection.<Object, ENUMTYPE>uncheckedCast(aCachedData[nID]);
}
// Object is not cachable - traverse as ususal
for (final ENUMTYPE aElement : aClass.getEnumConstants())
if (aElement.getID() == nID) return aElement;
return aDefault;
}
/**
* Get the enum value with the passed name
*
* @param <ENUMTYPE> The enum type
* @param aClass The enum class
* @param sName The name to search
* @param aDefault The default value to be returned, if the name was not found.
* @return The default parameter if no enum item with the given name is present.
*/
@Nullable
public static <ENUMTYPE extends Enum<ENUMTYPE> & IHasName> ENUMTYPE getFromNameOrDefault(
@Nonnull final Class<ENUMTYPE> aClass,
@Nullable final String sName,
@Nullable final ENUMTYPE aDefault) {
ValueEnforcer.notNull(aClass, "Class");
if (StringHelper.hasText(sName))
for (final ENUMTYPE aElement : aClass.getEnumConstants())
if (aElement.getName().equals(sName)) return aElement;
return aDefault;
}
/**
* Get the enum value with the passed ID
*
* @param <KEYTYPE> The ID type
* @param <ENUMTYPE> The enum type
* @param aClass The enum class
* @param aID The ID to search
* @param aDefault The default value to be returned, if the ID was not found.
* @return The default parameter if no enum item with the given ID is present.
*/
@Nullable
public static <KEYTYPE, ENUMTYPE extends Enum<ENUMTYPE> & IHasID<KEYTYPE>>
ENUMTYPE getFromIDOrDefault(
@Nonnull final Class<ENUMTYPE> aClass,
@Nullable final KEYTYPE aID,
@Nullable final ENUMTYPE aDefault) {
ValueEnforcer.notNull(aClass, "Class");
if (aID != null)
for (final ENUMTYPE aElement : aClass.getEnumConstants())
if (aElement.getID().equals(aID)) return aElement;
return aDefault;
}
/**
* Get the enum value with the passed string ID case insensitive
*
* @param <ENUMTYPE> The enum type
* @param aClass The enum class
* @param sID The ID to search
* @param aDefault The default value to be returned, if the ID was not found.
* @return The default parameter if no enum item with the given ID is present.
*/
@Nullable
public static <ENUMTYPE extends Enum<ENUMTYPE> & IHasID<String>>
ENUMTYPE getFromIDCaseInsensitiveOrDefault(
@Nonnull final Class<ENUMTYPE> aClass,
@Nullable final String sID,
@Nullable final ENUMTYPE aDefault) {
ValueEnforcer.notNull(aClass, "Class");
if (sID != null)
for (final ENUMTYPE aElement : aClass.getEnumConstants())
if (aElement.getID().equalsIgnoreCase(sID)) return aElement;
return aDefault;
}