package org.ovirt.engine.core.common.utils;
import java.util.HashMap;
import java.util.Map;
public class EnumUtils {
private static Map<Class, Map> cacheEnumValuesInCapitalLetters = new HashMap<>();
public static <E extends Enum<E>> E valueOf(Class<E> c, String name, boolean ignorecase) {
if (!ignorecase) {
return Enum.<E> valueOf(c, name);
}
E[] universe = c.getEnumConstants();
if (universe == null) {
throw new IllegalArgumentException(name + " is not an enum type");
}
Map<String, E> map = cacheEnumValuesInCapitalLetters.get(c);
if (map == null) {
// populate the map with enum values and add it to cache
map = new HashMap<>(2 * universe.length);
for (E e : universe) {
map.put(e.name().toUpperCase(), e);
}
cacheEnumValuesInCapitalLetters.put(c, map);
}
E result = map.get(name.toUpperCase());
if (result == null) {
throw new IllegalArgumentException("No enum const " + c.getName() + "." + name);
}
return result;
}
}